Max's M

Pachamama

The earth's numbers

Every number here carries its date and links to where it came from.

The planet

How the earth is changing

Carbon dioxide in the air

426.07 ppm

Up 1.70 ppm in a year. 35% more than when measuring began in 1958.

March 1958315.71 ppm
September 2025424.37 ppm
September 2026426.07 ppm

Monthly average at Mauna Loa, Hawaii, parts per million of dry air.

Source: NOAA Global Monitoring Laboratory, Mauna Loa record

Methane in the air

1,934.6 ppb

Up 5.4 ppb in a year. 19% more than in July 1983, when NOAA's global record began.

July 19831,626.0 ppb
June 20251,929.2 ppb
June 20261,934.6 ppb

The global monthly average from NOAA's sites by the sea, parts per billion of dry air. Methane traps more than 80 times as much heat as carbon dioxide over its first 20 years in the air.

Source: NOAA Global Monitoring Laboratory, global methane

Nitrous oxide in the air

339.86 ppb

Up 1.18 ppb in a year. 7% more than in January 2001, when NOAA's global record began.

January 2001316.30 ppb
June 2025338.68 ppb
June 2026339.86 ppb

The global monthly average from NOAA's sites by the sea, parts per billion of dry air. Nitrous oxide traps about 270 times as much heat as carbon dioxide over 100 years and wears away the ozone layer. Most of what people add comes from farming: fertiliser and manure.

Source: NOAA Global Monitoring Laboratory, global nitrous oxide

How much warmer the earth is

+1.38 °C

September 2026 was 1.38 °C warmer than the same month averaged over 1951 to 1980.

2025 as a whole was +1.18 °C. Land and ocean together, across the whole earth.

Source: NASA GISS Surface Temperature Analysis, version 4

Sea ice

Arctic, 11 November 2026

8.84 million km²

15% less than the 1981 to 2010 average for this day.

1981 to 2010 average10.37 million km²
This day8.84 million km²

Antarctic, 11 November 2026

15.09 million km²

9% less than the 1981 to 2010 average for this day.

1981 to 2010 average16.56 million km²
This day15.09 million km²

Source: Fetterer, F., et al. (2025). Sea Ice Index, version 4. NSIDC. doi:10.7265/a98x-0f50

Sea level

+102 mm since 1993

The oceans stood 10.2 cm higher in the year to February 2025 than in their first year of satellite measurement, a rise of 3.11 mm a year on NOAA's trend.

Global mean sea level from satellite radar altimeters (TOPEX/Poseidon, the three Jasons and Sentinel-6), with the yearly cycle taken out. NOAA's latest published reading is from February 2025.

Source: Altimetry data are provided by NOAA Laboratory for Satellite Altimetry.

The ozone hole

19.3 million km² on 8 November 2026

Bigger than the 10.9 million km² usual for this day across 1979 to 2025. This year's hole was at its biggest on 18 September 2026: 27.1 million km², against 19.5 usual for that day.

Usual for 8 November10.9 million km²
8 November 202619.3 million km²

The area over Antarctica where the ozone layer is thinner than 220 Dobson units, which lets more of the sun's ultraviolet through. It opens each southern spring, August to December. The Montreal Protocol banned the chemicals that cause it, and scientists expect the Antarctic ozone layer to recover to its 1980 state around 2066.

Source: NASA Ozone Watch, Goddard Space Flight Center

Greenhouse gases released in 2025

54.3 billion tonnes

Five countries released 57% of it. China alone released 30.6%.

1. China30.6%, 16.6 billion t
2. United States of America11.7%, 6.3 billion t
3. India8.2%, 4.4 billion t
4. Indonesia3.8%, 2.1 billion t
5. Japan2.7%, 1.4 billion t

Worldwide, as estimated by Climate TRACE, counted as CO₂-equivalent over 100 years.

Source: Climate TRACE, licensed CC BY 4.0

Methane leaks seen from space

62.0 tonnes of methane an hour

The biggest leak in Carbon Mapper's catalogue for the last 90 days: oil and gas in Russia, seen on 20 August. 9 of the 10 biggest were oil and gas.

10. Landfill, Morocco: 7.5 t an hour109. Oil and gas, Turkmenistan: 7.7 t an hour98. Oil and gas, Australia: 7.8 t an hour87. Oil and gas, Bahrain: 9.1 t an hour76. Oil and gas, Turkmenistan: 10.4 t an hour65. Oil and gas, Turkmenistan: 12.6 t an hour54. Oil and gas, Russia: 17.3 t an hour43. Oil and gas, Turkmenistan: 17.3 t an hour32. Oil and gas, Turkmenistan: 19.4 t an hour21. Oil and gas, Russia: 62.0 t an hour1

Swipe across the map to see the whole earth.

  1. 1

    Oil and gas, Russia

    Seen on 20 August by Planet Tanager 1, at 67.85° N, 75.47° E

    62.0 tan hour, ±8.1

  2. 2

    Oil and gas, Turkmenistan

    Seen on 5 October by Planet Tanager 1, at 39.46° N, 53.62° E

    19.4 tan hour, ±6.4

  3. 3

    Oil and gas, Turkmenistan

    Seen on 26 August by Planet Tanager 1, at 38.33° N, 54.03° E

    17.3 tan hour, ±2.1

  4. 4

    Oil and gas, Russia

    Seen on 20 August by Planet Tanager 1, at 68.05° N, 75.64° E

    17.3 tan hour, ±1.3

  5. 5

    Oil and gas, Turkmenistan

    Seen on 26 August by Planet Tanager 1, at 37.77° N, 53.92° E

    12.6 tan hour, ±0.9

  6. 6

    Oil and gas, Turkmenistan

    Seen on 26 August by Planet Tanager 1, at 37.93° N, 53.92° E

    10.4 tan hour, ±1.7

  7. 7

    Oil and gas, Bahrain

    Seen on 17 August by Planet Tanager 1, at 26.00° N, 50.53° E

    9.1 tan hour, ±1.0

  8. 8

    Oil and gas, Australia

    Seen on 29 August by Planet Tanager 1, at 20.79° S, 115.45° E

    7.8 tan hour, ±0.7

  9. 9

    Oil and gas, Turkmenistan

    Seen on 20 August by Planet Tanager 1, at 36.49° N, 61.58° E

    7.7 tan hour, ±1.3

  10. 10

    Landfill, Morocco

    Seen on 22 September by Planet Tanager 1, at 33.48° N, 7.54° W

    7.5 tan hour, ±0.6

Each figure is one plume, measured once as the satellite passed over, in tonnes of methane an hour with Carbon Mapper's uncertainty. A leak can stop or run on, so it is not a yearly total. Methane traps more than 80 times as much heat as carbon dioxide over its first 20 years in the air. Carbon Mapper's catalogue holds 1,929 methane plumes seen in these 90 days.

Source: Carbon Mapper, methane plumes from Planet's Tanager satellite and others

Borders: Natural Earth

Disasters going on now

83 disasters followed right now, wildfires apart

3 tropical cyclones, 13 floods, 1 drought, 66 earthquakes. None is at orange or red alert.

Flood in Colombia, green alertFlood in Angola, green alertFlood in Venezuela, green alertFlood in Syria, green alertFlood in Israel, green alertFlood in Iraq, green alertFlood in France, green alertFlood in Argentina, green alertFlood in Vietnam, green alertFlood in Democratic Republic of Congo, green alertFlood in Indonesia, green alertFlood in Portugal, green alertFlood in Italy, green alertEarthquake in Guatemala, green alertEarthquake in Japan, green alertEarthquake in Dominican Republic, green alertEarthquake in Japan, green alertEarthquake in Indonesia, green alertEarthquake in Vanuatu, green alertEarthquake in South Of Fiji Islands, green alertEarthquake in United States, green alertEarthquake in Indonesia, green alertEarthquake in Japan, green alertEarthquake in Russia, green alertEarthquake in Solomon Islands, green alertEarthquake in South Of Fiji Islands, green alertEarthquake in Solomon Islands, green alertEarthquake in Off East Coast Of Honshu, Japan, green alertEarthquake in Italy, green alertEarthquake in Vanuatu, green alertEarthquake in Indonesia, green alertEarthquake in Off East Coast Of Honshu, Japan, green alertEarthquake in Chile, green alertEarthquake in Southwest Indian Ridge, green alertEarthquake in Papua New Guinea, green alertEarthquake in Indonesia, green alertEarthquake in Turkey, green alertEarthquake in United States, green alertEarthquake in Japan, green alertEarthquake in Iceland, green alertEarthquake in Indonesia, green alertEarthquake in Canada, green alertEarthquake in South Of Mariana Islands, green alertEarthquake in Central Mid-Atlantic Ridge, green alertEarthquake in Solomon Islands, green alertEarthquake in Indonesia, green alertEarthquake in Vanuatu, green alertEarthquake in Northern Mid-Atlantic Ridge, green alertEarthquake in Guatemala, green alertEarthquake in Solomon Islands, green alertEarthquake in Philippines, green alertEarthquake in South Of Fiji Islands, green alertEarthquake in Mid-Indian Ridge, green alertEarthquake in South Sandwich Islands Region, green alertEarthquake in South Of Fiji Islands, green alertEarthquake in Japan, green alertEarthquake in Vanuatu Islands, green alertEarthquake in Indonesia, green alertEarthquake in Russia, green alertEarthquake in Chile, green alertEarthquake in Tonga, green alertEarthquake in South Of Fiji Islands, green alertEarthquake in Indonesia, green alertEarthquake in Chile, green alertEarthquake in South Sandwich Islands Region, green alertEarthquake in Papua New Guinea, green alertEarthquake in Solomon Islands, green alertEarthquake in Indonesia, green alertEarthquake in Mid-Indian Ridge, green alertEarthquake in Papua New Guinea, green alertEarthquake in Peru, green alertEarthquake in Indonesia, green alertEarthquake in Indonesia, green alertEarthquake in Guatemala, green alertEarthquake in Japan, green alertEarthquake in Central Mid-Atlantic Ridge, green alertEarthquake in Solomon Is., green alertTropical Cyclone 02-20262027-27, green alertTropical Cyclone PENA-26, green alertTropical Cyclone CEMPAKA-26, green alertDrought in Bangladesh, Bhutan, China and 3 more countries, green alert

Swipe across the map to see the whole earth.

Green: low impact on people expectedOrange: medium impact on people expectedRed: high impact on people expected

Tropical cyclones, 3

Floods, 13

And 8 more floods.

Droughts, 1

Earthquakes, 66

And 61 more earthquakes.

At orange or red in the last 30 days, no longer current

GDACS follows earthquakes, tropical cyclones, floods, volcanoes and droughts across the earth and gives each an alert for the harm to people it expects, from where it struck and how many live there. Open one for its full report. Wildfires are on the fire map below.

Source: GDACS, the Global Disaster Alert and Coordination System of the United Nations and the European Commission

Fires burning on earth

44,528 fires seen from space in 24 hours

They resolve to 124 countries, with 480 offshore or on a coast and South Sudan (7,017), Australia and Brazil leading; 5,718 low-confidence detections are left out of the counts.

Swipe across the map to see the whole earth.

FewerMore fire detections in each half-degree square, about 55 km across
1. South Sudan7,017, 16%
2. Australia6,499, 15%
3. Brazil3,391, 8%
4. Sudan2,162, 5%
5. Chad1,769, 4%
6. China1,613, 4%
7. Central African Republic1,527, 3%
8. United States1,475, 3%
9. Madagascar1,307, 3%
10. Mali1,197, 3%

Each detection is a spot about 375 metres across that the VIIRS instrument on NASA and NOAA's NOAA-20 satellite saw burning, from 21:33 UTC on 10 November to 21:23 UTC on 11 November. One large fire makes many detections, and gas flares and some industrial heat are counted too.

Source: NASA FIRMS, VIIRS NOAA-20 near real time

Borders: Natural Earth

Forests

23.0 million hectares of natural forest lost in 2025

In 2020 the world had 3.54 billion hectares of natural forest, 26.8% of its land; in 2025 it lost 23.0 million hectares of it (nearly the size of the United Kingdom), equal to 9.35 Gt of CO₂e, and 10.5 million hectares of that (46%) burned.

Humid primary forest lost each year: 87.3 million hectares since 2002

024682002: 2.66 million hectares2003: 2.49 million hectares2004: 3.40 million hectares2005: 3.33 million hectares20052006: 2.81 million hectares2007: 2.90 million hectares2008: 2.71 million hectares2009: 2.80 million hectares2010: 3.31 million hectares20102011: 2.75 million hectares2012: 3.60 million hectares2013: 2.64 million hectares2014: 3.59 million hectares2015: 2.93 million hectares20152016: 6.13 million hectares2017: 5.00 million hectares2018: 3.65 million hectares2019: 3.75 million hectares2020: 4.21 million hectares20202021: 3.75 million hectares2022: 4.12 million hectares2023: 3.74 million hectares2024: 6.73 million hectares2025: 4.29 million hectares2025
Millions of hectares a year. The table below has every year.
Table, one row per year
YearHumid primary forest lost
20254.29 million ha
20246.73 million ha
20233.74 million ha
20224.12 million ha
20213.75 million ha
20204.21 million ha
20193.75 million ha
20183.65 million ha
20175.00 million ha
20166.13 million ha
20152.93 million ha
20143.59 million ha
20132.64 million ha
20123.60 million ha
20112.75 million ha
20103.31 million ha
20092.80 million ha
20082.71 million ha
20072.90 million ha
20062.81 million ha
20053.33 million ha
20043.40 million ha
20032.49 million ha
20022.66 million ha

Where natural forest was lost in 2025

1. Canada5.37 million ha, 23%
2. Russian Federation4.01 million ha, 17%
3. Brazil2.56 million ha, 11%
4. United States of America1.37 million ha, 6%
5. Democratic Republic of the Congo1.14 million ha, 5%
6. Bolivia (Plurinational State of)0.74 million ha, 3%
7. Indonesia0.53 million ha, 2%
8. China0.41 million ha, 2%
9. Angola0.39 million ha, 2%
10. Zambia0.38 million ha, 2%

Natural forest is the Science Based Targets Network's 2020 map at any canopy; loss is the University of Maryland's yearly satellite record of tree cover loss, 30 metres at a time; humid primary forest counts canopy over 30%. Global Nature Watch cautions that its methods changed over time, so compare years before and after 2015 with care.

Source: Global Nature Watch, World Resources Institute and University of Maryland, CC BY 4.0

The air

What we are breathing

The air right now

Columbus, United States

53 on the US air quality index

Air quality is moderate.

Fine particles (PM2.5)
2.8 µg/m³
Coarse particles (PM10)
2.9 µg/m³
Ozone
59.0 µg/m³
Nitrogen dioxide
5.3 µg/m³

UV index 0.7, low.

Modelled for 12 November 2026 at 14:00, local time.

Source: Open-Meteo, licensed CC BY 4.0, from Copernicus Atmosphere Monitoring Service forecasts

Measured by the best sensor nearby

10.6 µg/m³ of fine particles

Measured 5 km away, 1 hour ago.

By Fairgrounds, an official air monitor run through AirNow. This is a real reading, not a forecast.

Source: OpenAQ

The air across the earth right now

9 of 96 places have unhealthy air right now, and 17 more are unhealthy for sensitive groups. The worst is Riyadh, Saudi Arabia, at 1125.

63 of 96 places have a measured reading nearby, 26 of them from an official monitor.

The ten worst right now

  1. 1RiyadhSaudi Arabia

    1125

    hazardous, beyond the top of the index

    Measured 16.1 µg/m³ of fine particles, by a low-cost community sensor, 20 km away, 22 hours ago.

  2. 2BeijingChina

    260

    very unhealthy

    Measured 68.8 µg/m³ of fine particles, by a low-cost community sensor, 5 km away, 22 hours ago.

  3. 3LahorePakistan

    220

    very unhealthy

    Measured 298.0 µg/m³ of fine particles, by a low-cost community sensor, 1 km away, 24 hours ago.

  4. 4DelhiIndia

    203

    very unhealthy

    Measured 276.0 µg/m³ of fine particles, by an official monitor, New Delhi, 2 km away, 23 hours ago.

  5. 5JakartaIndonesia

    181

    unhealthy

    Measured 88.7 µg/m³ of fine particles, by a low-cost community sensor, 8 km away, 22 hours ago.

  6. 6ChongqingChina

    160

    unhealthy

    No sensor within 25 km has a recent reading.

  7. 7GuangzhouChina

    159

    unhealthy

    No sensor within 25 km has a recent reading.

  8. 8UlaanbaatarMongolia

    152

    unhealthy

    Measured 61.4 µg/m³ of fine particles, by a low-cost community sensor, 2 km away, 22 hours ago.

  9. 9ShanghaiChina

    151

    unhealthy

    Measured 50.1 µg/m³ of fine particles, by a low-cost community sensor, 13 km away, 22 hours ago.

  10. 10Mexico CityMexico

    142

    unhealthy for sensitive groups

    Measured 48.0 µg/m³ of fine particles, by an official monitor, Merced, under 1 km away, 23 hours ago.

The ten cleanest right now

  1. 1McMurdo StationAntarctica, a town

    15

    good

    No sensor within 25 km has a recent reading.

  2. 2QueenstownNew Zealand, a town

    16

    good

    No sensor within 25 km has a recent reading.

  3. 3UshuaiaArgentina, a town

    16

    good

    No sensor within 25 km has a recent reading.

  4. 4Alice SpringsAustralia, a town

    19

    good

    No sensor within 25 km has a recent reading.

  5. 5TromsøNorway, a town

    21

    good

    No sensor within 25 km has a recent reading.

  6. 6MadridSpain

    22

    good

    Measured 4.0 µg/m³ of fine particles, by an official monitor, ESCUELAS AGUIRRE, 2 km away, 23 hours ago.

  7. 7KirunaSweden, a town

    23

    good

    No sensor within 25 km has a recent reading.

  8. 8Luang PrabangLaos, a town

    25

    good

    Measured 1.5 µg/m³ of fine particles, by a low-cost community sensor, 2 km away, 22 hours ago.

  9. 9TashkentUzbekistan

    25

    good

    No sensor within 25 km has a recent reading.

  10. 10ChamonixFrance, a town

    26

    good

    No sensor within 25 km has a recent reading.

Every place, by continent

Asia32 placesworst Riyadh 1125show

  1. RiyadhSaudi Arabia

    1125

    hazardous, beyond the top of the index

    Measured 16.1 µg/m³ of fine particles, by a low-cost community sensor, 20 km away, 22 hours ago.

  2. BeijingChina

    260

    very unhealthy

    Measured 68.8 µg/m³ of fine particles, by a low-cost community sensor, 5 km away, 22 hours ago.

  3. LahorePakistan

    220

    very unhealthy

    Measured 298.0 µg/m³ of fine particles, by a low-cost community sensor, 1 km away, 24 hours ago.

  4. DelhiIndia

    203

    very unhealthy

    Measured 276.0 µg/m³ of fine particles, by an official monitor, New Delhi, 2 km away, 23 hours ago.

  5. JakartaIndonesia

    181

    unhealthy

    Measured 88.7 µg/m³ of fine particles, by a low-cost community sensor, 8 km away, 22 hours ago.

  6. ChongqingChina

    160

    unhealthy

    No sensor within 25 km has a recent reading.

  7. GuangzhouChina

    159

    unhealthy

    No sensor within 25 km has a recent reading.

  8. UlaanbaatarMongolia

    152

    unhealthy

    Measured 61.4 µg/m³ of fine particles, by a low-cost community sensor, 2 km away, 22 hours ago.

  9. ShanghaiChina

    151

    unhealthy

    Measured 50.1 µg/m³ of fine particles, by a low-cost community sensor, 13 km away, 22 hours ago.

  10. KolkataIndia

    140

    unhealthy for sensitive groups

    Measured 38.6 µg/m³ of fine particles, by an official monitor, Fort William, Kolkata - WBPCB, 2 km away, 25 hours ago.

  11. TehranIran

    134

    unhealthy for sensitive groups

    No sensor within 25 km has a recent reading.

  12. SeoulSouth Korea

    130

    unhealthy for sensitive groups

    Measured 26.0 µg/m³ of fine particles, by an official monitor, 종로, 2 km away, 23 hours ago.

  13. MumbaiIndia

    128

    unhealthy for sensitive groups

    Measured 125.7 µg/m³ of fine particles, by an official monitor, Bandra Kurla Complex, Mumbai - MPCB, 2 km away, 25 hours ago.

  14. DhakaBangladesh

    114

    unhealthy for sensitive groups

    Measured 40.1 µg/m³ of fine particles, by a low-cost community sensor, 4 km away, 22 hours ago.

  15. HanoiVietnam

    112

    unhealthy for sensitive groups

    Measured 39.3 µg/m³ of fine particles, by an official monitor, Số 1 đường Giải Phóng - phường Bạch Mai - ĐHBK, 2 km away, 22 hours ago.

  16. BengaluruIndia

    109

    unhealthy for sensitive groups

    Measured 59.0 µg/m³ of fine particles, by an official monitor, Hombegowda Nagar, Bengaluru - KSPCB, 4 km away, 25 hours ago.

  17. Kuala LumpurMalaysia

    108

    unhealthy for sensitive groups

    Measured 15.6 µg/m³ of fine particles, by a low-cost community sensor, 5 km away, 22 hours ago.

  18. TokyoJapan

    100

    moderate

    Measured 11.0 µg/m³ of fine particles, by an official monitor, 渋谷区本町6-6-2, 1 km away, 23 hours ago.

  19. IstanbulRepublic of Türkiye

    73

    moderate

    Measured 14.1 µg/m³ of fine particles, by a low-cost community sensor, 7 km away, 22 hours ago.

  20. SingaporeSingapore

    73

    moderate

    Measured 19.4 µg/m³ of fine particles, by a low-cost community sensor, 1 km away, 22 hours ago.

  21. KarachiPakistan

    70

    moderate

    Measured 44.8 µg/m³ of fine particles, by a low-cost community sensor, under 1 km away, 22 hours ago.

  22. BangkokThailand

    68

    moderate

    Measured 21.7 µg/m³ of fine particles, by an official monitor, National Economic and Social Development Council Office, 1 km away, 22 hours ago.

  23. Ho Chi Minh CityVietnam

    66

    moderate

    Measured 6.2 µg/m³ of fine particles, by a low-cost community sensor, 6 km away, 22 hours ago.

  24. KabulAfghanistan

    60

    moderate

    No sensor within 25 km has a recent reading.

  25. BaghdadIraq

    57

    moderate

    Measured 35.7 µg/m³ of fine particles, by a low-cost community sensor, 3 km away, 22 hours ago.

  26. LhasaChina, a town

    55

    moderate

    No sensor within 25 km has a recent reading.

  27. GilgitPakistan, a town

    50

    good

    No sensor within 25 km has a recent reading.

  28. YakutskRussia, a town

    40

    good

    No sensor within 25 km has a recent reading.

  29. ManilaPhilippines

    36

    good

    Measured 18.4 µg/m³ of fine particles, by a low-cost community sensor, under 1 km away, 22 hours ago.

  30. LehIndia, a town

    33

    good

    Measured 2.9 µg/m³ of fine particles, by a low-cost community sensor, 3 km away, 22 hours ago.

  31. TashkentUzbekistan

    25

    good

    No sensor within 25 km has a recent reading.

  32. Luang PrabangLaos, a town

    25

    good

    Measured 1.5 µg/m³ of fine particles, by a low-cost community sensor, 2 km away, 22 hours ago.

Africa18 placesworst Agadez 140show

  1. AgadezNiger, a town

    140

    unhealthy for sensitive groups

    No sensor within 25 km has a recent reading.

  2. JohannesburgSouth Africa

    137

    unhealthy for sensitive groups

    Measured 28.6 µg/m³ of fine particles, by a low-cost community sensor, 11 km away, 22 hours ago.

  3. TamanrassetAlgeria, a town

    114

    unhealthy for sensitive groups

    No sensor within 25 km has a recent reading.

  4. KhartoumSudan

    111

    unhealthy for sensitive groups

    No sensor within 25 km has a recent reading.

  5. LagosNigeria

    79

    moderate

    Measured 49.1 µg/m³ of fine particles, by a low-cost community sensor, 2 km away, 22 hours ago.

  6. DakarSenegal

    77

    moderate

    Measured 2.5 µg/m³ of fine particles, by a low-cost community sensor, 1 km away, 22 hours ago.

  7. TimbuktuMali, a town

    71

    moderate

    No sensor within 25 km has a recent reading.

  8. CairoEgypt

    70

    moderate

    Measured 29.0 µg/m³ of fine particles, by a low-cost community sensor, 3 km away, 22 hours ago.

  9. Addis AbabaEthiopia

    61

    moderate

    No sensor within 25 km has a recent reading.

  10. LuandaAngola

    56

    moderate

    No sensor within 25 km has a recent reading.

  11. AccraGhana

    52

    moderate

    Measured 25.2 µg/m³ of fine particles, by a low-cost community sensor, under 1 km away, 22 hours ago.

  12. GuluUganda, a town

    52

    moderate

    No sensor within 25 km has a recent reading.

  13. AbidjanIvory Coast

    50

    good

    Measured 5.8 µg/m³ of fine particles, by a low-cost community sensor, 3 km away, 22 hours ago.

  14. Dar es SalaamTanzania

    49

    good

    Measured 3.7 µg/m³ of fine particles, by a low-cost community sensor, 5 km away, 22 hours ago.

  15. MaunBotswana, a town

    48

    good

    No sensor within 25 km has a recent reading.

  16. CasablancaMorocco

    47

    good

    No sensor within 25 km has a recent reading.

  17. NairobiKenya

    41

    good

    Measured 27.7 µg/m³ of fine particles, by a low-cost community sensor, 9 km away, 22 hours ago.

  18. KinshasaDemocratic Republic of Congo

    34

    good

    Measured 60.9 µg/m³ of fine particles, by a low-cost community sensor, 7 km away, 22 hours ago.

Europe14 placesworst Warsaw 120show

  1. WarsawPoland

    120

    unhealthy for sensitive groups

    Measured 23.7 µg/m³ of fine particles, by an official monitor, Warszawa, ul. Kondratowicza, 7 km away, 23 hours ago.

  2. MoscowRussia

    115

    unhealthy for sensitive groups

    No sensor within 25 km has a recent reading.

  3. BerlinGermany

    72

    moderate

    Measured 20.5 µg/m³ of fine particles, by an official monitor, Berlin Karl-Marx-Straße II, 5 km away, 23 hours ago.

  4. LondonUnited Kingdom

    65

    moderate

    Measured 8.0 µg/m³ of fine particles, by an official monitor, Wandsworth - Battersea, 3 km away, 24 hours ago.

  5. AthensGreece

    56

    moderate

    Measured 25.0 µg/m³ of fine particles, by an official monitor, ARISTOTELOUS, under 1 km away, 23 hours ago.

  6. StockholmSweden

    55

    moderate

    Measured 7.7 µg/m³ of fine particles, by an official monitor, Stockholm St Eriksgatan 83, 2 km away, 24 hours ago.

  7. ParisFrance

    54

    moderate

    Measured 17.9 µg/m³ of fine particles, by an official monitor, PARIS 1er Les Halles, 1 km away, 23 hours ago.

  8. KyivUkraine

    53

    moderate

    Measured 22.7 µg/m³ of fine particles, by a low-cost community sensor, 10 km away, 22 hours ago.

  9. RomeItaly

    46

    good

    Measured 5.9 µg/m³ of fine particles, by a low-cost community sensor, 1 km away, 22 hours ago.

  10. ReykjavíkIceland, a town

    31

    good

    Measured 4.2 µg/m³ of fine particles, by an official monitor, Reykjavik Husdyragardurinn, 1 km away, 23 hours ago.

  11. ChamonixFrance, a town

    26

    good

    No sensor within 25 km has a recent reading.

  12. KirunaSweden, a town

    23

    good

    No sensor within 25 km has a recent reading.

  13. MadridSpain

    22

    good

    Measured 4.0 µg/m³ of fine particles, by an official monitor, ESCUELAS AGUIRRE, 2 km away, 23 hours ago.

  14. TromsøNorway, a town

    21

    good

    No sensor within 25 km has a recent reading.

North America12 placesworst Mexico City 142show

  1. Mexico CityMexico

    142

    unhealthy for sensitive groups

    Measured 48.0 µg/m³ of fine particles, by an official monitor, Merced, under 1 km away, 23 hours ago.

  2. ChicagoUnited States

    93

    moderate

    Measured 18.2 µg/m³ of fine particles, by an official monitor, CHI_COM, 12 km away, 23 hours ago.

  3. HoustonUnited States

    70

    moderate

    Measured 3.4 µg/m³ of fine particles, by an official monitor, Clinton C403, 11 km away, 23 hours ago.

  4. Los AngelesUnited States

    61

    moderate

    Measured 9.0 µg/m³ of fine particles, by an official monitor, Compton, 17 km away, 23 hours ago.

  5. Guatemala CityGuatemala

    60

    moderate

    Measured 5.5 µg/m³ of fine particles, by a low-cost community sensor, 4 km away, 22 hours ago.

  6. New YorkUnited States

    50

    good

    Measured 6.6 µg/m³ of fine particles, by an official monitor, Jersey City FH, 4 km away, 23 hours ago.

  7. FlagstaffUnited States, a town

    46

    good

    Measured 2.0 µg/m³ of fine particles, by an official monitor, 840MMAZ10002, under 1 km away, 45 hours ago.

  8. FairbanksUnited States, a town

    43

    good

    Measured 1.5 µg/m³ of fine particles, by an official monitor, NCore, 1 km away, 23 hours ago.

  9. HavanaCuba

    36

    good

    No sensor within 25 km has a recent reading.

  10. IqaluitCanada, a town

    36

    good

    No sensor within 25 km has a recent reading.

  11. NuukGreenland, a town

    35

    good

    No sensor within 25 km has a recent reading.

  12. TorontoCanada

    31

    good

    Measured 6.0 µg/m³ of fine particles, by an official monitor, Toronto Downtown, 7 km away, 23 hours ago.

South America11 placesworst Santiago 132show

  1. SantiagoChile

    132

    unhealthy for sensitive groups

    No sensor within 25 km has a recent reading.

  2. São PauloBrazil

    125

    unhealthy for sensitive groups

    Measured 29.8 µg/m³ of fine particles, by a low-cost community sensor, 4 km away, 22 hours ago.

  3. ManausBrazil

    85

    moderate

    Measured 45.5 µg/m³ of fine particles, by a low-cost community sensor, 2 km away, 22 hours ago.

  4. Rio de JaneiroBrazil

    63

    moderate

    Measured 6.0 µg/m³ of fine particles, by an official monitor, Centro, under 1 km away, 22 hours ago.

  5. LimaPeru

    61

    moderate

    Measured 3.0 µg/m³ of fine particles, by a low-cost community sensor, 24 km away, 22 hours ago.

  6. BogotáColombia

    59

    moderate

    Measured 25.0 µg/m³ of fine particles, by an official monitor, Carvajal - Sevillana, 8 km away, 22 hours ago.

  7. IquitosPeru, a town

    56

    moderate

    No sensor within 25 km has a recent reading.

  8. Buenos AiresArgentina

    55

    moderate

    Measured 2.4 µg/m³ of fine particles, by a low-cost community sensor, 5 km away, 22 hours ago.

  9. PotosíBolivia, a town

    40

    good

    No sensor within 25 km has a recent reading.

  10. CaracasVenezuela

    30

    good

    No sensor within 25 km has a recent reading.

  11. UshuaiaArgentina, a town

    16

    good

    No sensor within 25 km has a recent reading.

Oceania8 placesworst Sydney 64show

  1. SydneyAustralia

    64

    moderate

    Measured 1.2 µg/m³ of fine particles, by a low-cost community sensor, 6 km away, 22 hours ago.

  2. MelbourneAustralia

    55

    moderate

    Measured 0.0 µg/m³ of fine particles, by a low-cost community sensor, 4 km away, 22 hours ago.

  3. ApiaSamoa, a town

    48

    good

    No sensor within 25 km has a recent reading.

  4. PerthAustralia

    38

    good

    Measured 3.8 µg/m³ of fine particles, by a low-cost community sensor, 5 km away, 22 hours ago.

  5. AucklandNew Zealand

    32

    good

    Measured 0.6 µg/m³ of fine particles, by a low-cost community sensor, 5 km away, 22 hours ago.

  6. SuvaFiji, a town

    27

    good

    Measured 2.9 µg/m³ of fine particles, by a low-cost community sensor, 2 km away, 22 hours ago.

  7. Alice SpringsAustralia, a town

    19

    good

    No sensor within 25 km has a recent reading.

  8. QueenstownNew Zealand, a town

    16

    good

    No sensor within 25 km has a recent reading.

Antarctica1 placeworst McMurdo Station 15show

  1. McMurdo StationAntarctica, a town

    15

    good

    No sensor within 25 km has a recent reading.

One forecast for every place. The number in bold is the US air quality index from the Copernicus Atmosphere Monitoring Service forecast, the same model everywhere on earth, so any two places can be compared fairly.

The best sensor first. Under each place is a real measurement, from the best sensor within 25 km: an official monitor that reported in the last three hours, then one from earlier today, and only then a low-cost community sensor, which is cheaper and less exact. Many places on earth have no sensor near at all, and that is said plainly.

Source: Forecast: Open-Meteo, licensed CC BY 4.0, from Copernicus Atmosphere Monitoring Service

Source: Measured: OpenAQ, from each sensor's own operator