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Air monitors
Fires
Air quality
Wind
World AQI Ranking
12:03, May 24
#
MAJOR CITY
US AQI
1
Tehran , Iran
325
2
Riyadh , Saudi Arabia
194
3
Lima , Peru
149
4
Chengdu , China
135
5
Krasnoyarsk , Russia
133
6
Hanoi , Vietnam
124
7
Busan , South Korea
117
SEE FULL RANKING
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
,
Units
°C
°F
km/h
mp/h
US AQI
CN AQI
mbar
Hg
Most polluted cities among major cities in the world
