Cities With the Lowest US AQI Right Now

Yekaterinburg has the lowest PM2.5-based US Air Quality Index in our major-city sample right now, at about 6.

Updated hourly. Last updated Aug 1, 2026, 5:05:09 AM UTC.

Cities with at least 200,000 residents; 100 cities shown.

Top Cities Ranked by US AQI

#	City	Country	Category	PM2.5	US AQI
🥇	Yekaterinburg	Russia	Good	1.0 µg/m³	6
=2	Huizhou	China	Good	2.6 µg/m³	14
=2	Adelaide	Australia	Good	2.5 µg/m³	14
🥉	Tirunelveli	India	Good	2.7 µg/m³	15
4	Bengaluru	India	Good	3.1 µg/m³	17
=5	Bangkok	Thailand	Good	3.5 µg/m³	19
=5	Nowrangapur	India	Good	3.5 µg/m³	19
6	Brasilia	Brazil	Good	3.6 µg/m³	20
=7	Buenos Aires	Argentina	Good	3.7 µg/m³	21
=7	N'Djamena	Chad	Good	3.8 µg/m³	21
=7	N'Djamena	Chad	Good	3.8 µg/m³	21
=7	Córdoba	Argentina	Good	3.7 µg/m³	21
8	Qinzhou	China	Good	3.9 µg/m³	22
=9	Indore	India	Good	4.1 µg/m³	23
=9	Santa Cruz de la Sierra	Bolivia	Good	4.1 µg/m³	23
=9	San Antonio	United States	Good	4.2 µg/m³	23
=9	Niamey	Niger	Good	4.2 µg/m³	23
10	Quito	Ecuador	Good	4.3 µg/m³	24
=11	Chicago	United States	Good	4.5 µg/m³	25
=11	Coimbatore	India	Good	4.5 µg/m³	25
=11	Sapporo	Japan	Good	4.5 µg/m³	25
=11	Antalya	Türkiye	Good	4.5 µg/m³	25
12	Madurai	India	Good	4.6 µg/m³	26
=13	Camayenne	Guinea	Good	4.8 µg/m³	27
=13	Conakry	Guinea	Good	4.8 µg/m³	27
=13	Goiânia	Brazil	Good	4.8 µg/m³	27
=13	Montevideo	Uruguay	Good	4.9 µg/m³	27
=14	Brisbane	Australia	Good	5.1 µg/m³	28
=14	Bhopāl	India	Good	5.0 µg/m³	28
=14	Kharkiv	Ukraine	Good	5.0 µg/m³	28
=14	Nizhniy Novgorod	Russia	Good	5.0 µg/m³	28
=15	Nanning	China	Good	5.2 µg/m³	29
=15	Hamburg	Germany	Good	5.3 µg/m³	29
=15	Harare	Zimbabwe	Good	5.3 µg/m³	29
=15	Mandalay	Myanmar	Good	5.2 µg/m³	29
=16	London	United Kingdom	Good	5.6 µg/m³	31
=16	Pune	India	Good	5.6 µg/m³	31
=16	Cali	Colombia	Good	5.5 µg/m³	31
=16	Zhaoqing	China	Good	5.5 µg/m³	31
=16	Ciudad Juárez	Mexico	Good	5.6 µg/m³	31
=16	Ulaanbaatar	Mongolia	Good	5.6 µg/m³	31
=16	Guankou	China	Good	5.6 µg/m³	31
=17	Yaounde	Cameroon	Good	5.8 µg/m³	32
=17	Guiyang	China	Good	5.8 µg/m³	32
=17	Curitiba	Brazil	Good	5.7 µg/m³	32
=18	Istanbul	Türkiye	Good	6.0 µg/m³	33
=18	Ankara	Türkiye	Good	5.9 µg/m³	33
=18	Manaus	Brazil	Good	5.9 µg/m³	33
=18	Phnom Penh	Cambodia	Good	5.9 µg/m³	33
=18	Qingyuan	China	Good	6.0 µg/m³	33
=18	Zhanjiang	China	Good	5.9 µg/m³	33
=18	Konya	Türkiye	Good	6.0 µg/m³	33
19	Yangjiang	China	Good	6.2 µg/m³	34
=20	Zhuhai	China	Good	6.3 µg/m³	35
=20	Qujing	China	Good	6.3 µg/m³	35
=20	Rājkot	India	Good	6.3 µg/m³	35
=21	Budta	Philippines	Good	6.4 µg/m³	36
=21	Sofia	Bulgaria	Good	6.5 µg/m³	36
=22	Madrid	Spain	Good	6.6 µg/m³	37
=22	Salvador	Brazil	Good	6.7 µg/m³	37
=22	Yunfu	China	Good	6.7 µg/m³	37
=22	Bamako	Mali	Good	6.6 µg/m³	37
=23	Minsk	Belarus	Good	6.9 µg/m³	38
=23	Valencia	Venezuela	Good	6.9 µg/m³	38
=23	Changde	China	Good	6.9 µg/m³	38
=24	Belo Horizonte	Brazil	Good	7.0 µg/m³	39
=24	Kaduna	Nigeria	Good	7.1 µg/m³	39
=24	Barquisimeto	Venezuela	Good	7.1 µg/m³	39
25	Kunming	China	Good	7.2 µg/m³	40
=26	Mashhad	Iran	Good	7.3 µg/m³	41
=26	Dazhou	China	Good	7.4 µg/m³	41
=26	Pimpri	India	Good	7.3 µg/m³	41
=27	Bursa	Türkiye	Good	7.5 µg/m³	42
=27	Khulna	Bangladesh	Good	7.5 µg/m³	42
=28	Shenzhen	China	Good	7.7 µg/m³	43
=28	Hong Kong	Hong Kong	Good	7.7 µg/m³	43
=28	Guayaquil	Ecuador	Good	7.8 µg/m³	43
=28	İzmir	Türkiye	Good	7.8 µg/m³	43
=28	Fortaleza	Brazil	Good	7.7 µg/m³	43
=28	Kowloon	Hong Kong	Good	7.7 µg/m³	43
=28	Belém	Brazil	Good	7.7 µg/m³	43
=28	Liuzhou	China	Good	7.7 µg/m³	43
=29	Kumasi	Ghana	Good	7.9 µg/m³	44
=29	Houston	United States	Good	7.9 µg/m³	44
=29	Perth	Australia	Good	8.0 µg/m³	44
=29	Kathmandu	Nepal	Good	7.9 µg/m³	44
=29	Maoming	China	Good	8.0 µg/m³	44
=29	Kazan	Russia	Good	8.0 µg/m³	44
=30	Nagoya	Japan	Good	8.1 µg/m³	45
=30	Bucharest	Romania	Good	8.1 µg/m³	45
=30	Guilin	China	Good	8.1 µg/m³	45
=31	Huainan	China	Good	8.2 µg/m³	46
=31	Liupanshui	China	Good	8.2 µg/m³	46
=32	Hong Kong	Hong Kong	Good	8.5 µg/m³	47
=32	Shantou	China	Good	8.4 µg/m³	47
=32	Tashkent	Uzbekistan	Good	8.5 µg/m³	47
=32	Fuyang	China	Good	8.5 µg/m³	47
=32	Lu’an	China	Good	8.4 µg/m³	47
=33	Sydney	Australia	Good	8.6 µg/m³	48
=33	Zunyi	China	Good	8.6 µg/m³	48

Methodology: Current pollutant concentrations are sampled from WeatherAPI for up to 400 large cities; US AQI values are calculated from PM2.5 using EPA breakpoints.

Why Is the AQI So Low in These Cities?

Lower AQI scores indicate lower measured PM2.5 pollution and generally lower health risk. A low PM2.5-based score does not rule out a local problem with another pollutant, so the table also shows supporting particle data.

Frequently Asked Questions: Cities With the Lowest US AQI Right Now

Which city has the lowest AQI right now?

Among the major cities we track, Yekaterinburg has the lowest current PM2.5-based US AQI at about 6 (as of August 1, 2026).

Does a low AQI mean every pollutant is low?

Not necessarily. This score is calculated from PM2.5; ozone, nitrogen dioxide or coarse particles can still be elevated.

Cities With the Lowest US AQI Right Now

Top Cities Ranked by US AQI

Why Is the AQI So Low in These Cities?

Frequently Asked Questions: Cities With the Lowest US AQI Right Now

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