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Air quality

Air quality around the world, right now

Hourly air quality and a 48-hour forecast for 849 cities in 161 countries, on one scale: the US EPA AQI, modelled from the Copernicus Atmosphere Monitoring Service. Indian cities also get India’s own National AQI and CPCB’s official bulletin.

World estimate refreshed 3 Nov, 07:52 UTC+0.

Most polluted major cities now

Most polluted cities, US AQI now
# City AQI
1 Riyadh Saudi Arabia 500
2 Zaria Nigeria 357
3 Beijing China 284
4 Bangkok Thailand 204
5 Ribeirão Preto Brazil 204
6 Greater Noida India 192
7 Xi’an China 189
8 Ghaziabad India 182
9 Noida India 181
10 Moscow Russia 179
11 Meerut India 178
12 Delhi India 177
13 Tianjin China 176
14 Gurugram India 174
15 Jambi City Indonesia 174
16 Jhang Sadr Pakistan 174
17 Kanpur India 171
18 Chunian Pakistan 169
19 Semarang Indonesia 169
20 Lucknow India 167

Cleanest major cities now

Cleanest cities, US AQI now
# City AQI
1 Ciudad Guayana Venezuela 14
2 Managua Nicaragua 15
3 Cali Colombia 16
4 Panama City Panama 17
5 Chaguanas Trinidad and Tobago 17
6 Port of Spain Trinidad and Tobago 18
7 Hermosillo Mexico 18
8 Chihuahua Mexico 18
9 Novosibirsk Russia 19
10 Copenhagen Denmark 19
11 Stockholm Sweden 20
12 Riga Latvia 20
13 Havana Cuba 20
14 Barnaul Russia 20
15 Uberlândia Brazil 21
  • Good 0–50
  • Moderate 51–100
  • Unhealthy for sensitive groups 101–150
  • Unhealthy 151–200
  • Very unhealthy 201–300
  • Hazardous 301–500

India

India, on its own National AQI

India’s pages use CPCB’s National AQI and show the official 4 PM bulletin beside our hourly estimate, for 279 CPCB-monitored cities. All Indian cities · हिंदी में

Every country we cover

The pill is the most polluted covered city in the country right now.

Asia

Africa

Europe

North America

South America

Oceania

Questions

Which city has the worst air quality in the world right now?

Among the 849 cities we cover, Riyadh, Saudi Arabia has the highest AQI right now (500, Hazardous), followed by Zaria (357), Beijing (284), Bangkok (204). The list changes by the hour with weather, fires and dust.

Which major city has the cleanest air right now?

Ciudad Guayana, Venezuela (14); Managua, Nicaragua (15); Cali, Colombia (16); Panama City, Panama (17), on the US EPA scale.

What do the AQI numbers and colours mean?

The US EPA Air Quality Index runs from 0 to 500: 0–50 Good, 51–100 Moderate, 101–150 Unhealthy for sensitive groups, 151–200 Unhealthy, 201–300 Very unhealthy, 301 and above Hazardous. Each pollutant gets a sub-index and the AQI is the highest one.

Where do these numbers come from?

From the Copernicus Atmosphere Monitoring Service (CAMS), the European Union’s global air-quality forecast. It is a model, not a network of monitors, so it gives every city the same method and a forecast, but it can differ from a local station. For Indian cities we also show CPCB’s official daily bulletin.

How we calculate it · Data: CAMS via Open-Meteo (CC BY 4.0), CPCB (GODL-India), GeoNames (CC BY 4.0).