Cities With the Lowest US AQI Right Now

Novosibirsk has the lowest PM2.5-based US Air Quality Index in our major-city sample right now, at about 8.

Updated hourly. Last updated Sep 15, 2026, 10:05:09 PM UTC.

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

Top Cities Ranked by US AQI

#	City	Country	Category	PM2.5	US AQI
=1	Novosibirsk	Russia	Good	1.4 µg/m³	8
=1	Antananarivo	Madagascar	Good	1.4 µg/m³	8
🥈	Kyoto	Japan	Good	1.6 µg/m³	9
🥉	Qujing	China	Good	2.2 µg/m³	12
4	Saitama	Japan	Good	2.4 µg/m³	13
=5	Camayenne	Guinea	Good	2.8 µg/m³	16
=5	Conakry	Guinea	Good	2.8 µg/m³	16
=6	Bangkok	Thailand	Good	3.3 µg/m³	18
=6	Kobe	Japan	Good	3.3 µg/m³	18
=7	London	United Kingdom	Good	3.7 µg/m³	21
=7	Paris	France	Good	3.7 µg/m³	21
=8	Sydney	Australia	Good	3.9 µg/m³	22
=8	Perth	Australia	Good	4.0 µg/m³	22
=9	Kunming	China	Good	4.2 µg/m³	23
=9	Yaounde	Cameroon	Good	4.1 µg/m³	23
10	Havana	Cuba	Good	4.3 µg/m³	24
11	Mogadishu	Somalia	Good	4.5 µg/m³	25
=12	Guayaquil	Ecuador	Good	4.7 µg/m³	26
=12	La Paz	Bolivia	Good	4.6 µg/m³	26
=12	Montréal	Canada	Good	4.6 µg/m³	26
=13	Bogota	Colombia	Good	5.0 µg/m³	28
=13	Navi Mumbai	India	Good	5.1 µg/m³	28
=14	Buenos Aires	Argentina	Good	5.3 µg/m³	29
=14	Zapopan	Mexico	Good	5.3 µg/m³	29
=14	Guadalajara	Mexico	Good	5.3 µg/m³	29
=14	Nashik	India	Good	5.3 µg/m³	29
=15	Istanbul	Türkiye	Good	5.6 µg/m³	31
=15	Córdoba	Argentina	Good	5.6 µg/m³	31
=16	Osaka	Japan	Good	5.7 µg/m³	32
=16	Santa Cruz de la Sierra	Bolivia	Good	5.8 µg/m³	32
=17	Mumbai	India	Good	6.3 µg/m³	35
=17	Thāne	India	Good	6.3 µg/m³	35
=17	Barquisimeto	Venezuela	Good	6.3 µg/m³	35
=18	Rome	Italy	Good	6.4 µg/m³	36
=18	Medellín	Colombia	Good	6.5 µg/m³	36
=18	Ciudad Juárez	Mexico	Good	6.5 µg/m³	36
19	Kumasi	Ghana	Good	6.6 µg/m³	37
=20	Brasilia	Brazil	Good	6.9 µg/m³	38
=20	Yekaterinburg	Russia	Good	6.9 µg/m³	38
=20	Kharkiv	Ukraine	Good	6.9 µg/m³	38
=20	Dallas	United States	Good	6.9 µg/m³	38
=20	Niamey	Niger	Good	6.9 µg/m³	38
=21	İzmir	Türkiye	Good	7.1 µg/m³	39
=21	Accra	Ghana	Good	7.1 µg/m³	39
=21	Hamburg	Germany	Good	7.0 µg/m³	39
=22	Abidjan	Côte d'Ivoire	Good	7.2 µg/m³	40
=22	Bursa	Türkiye	Good	7.2 µg/m³	40
=22	Valencia	Venezuela	Good	7.2 µg/m³	40
=22	Abobo	Côte d'Ivoire	Good	7.2 µg/m³	40
=22	Pimpri	India	Good	7.2 µg/m³	40
=23	Madrid	Spain	Good	7.3 µg/m³	41
=23	Toronto	Canada	Good	7.4 µg/m³	41
=24	Berlin	Germany	Good	7.5 µg/m³	42
=24	Goiânia	Brazil	Good	7.5 µg/m³	42
=25	Algiers	Algeria	Good	7.8 µg/m³	43
=25	Chicago	United States	Good	7.7 µg/m³	43
=26	Pune	India	Good	7.9 µg/m³	44
=26	Maracay	Venezuela	Good	7.9 µg/m³	44
=26	Montevideo	Uruguay	Good	8.0 µg/m³	44
27	Guatemala City	Guatemala	Good	8.1 µg/m³	45
=28	Maracaibo	Venezuela	Good	8.2 µg/m³	46
=28	Minsk	Belarus	Good	8.2 µg/m³	46
=28	Anshan	China	Good	8.3 µg/m³	46
=29	Nairobi	Kenya	Good	8.4 µg/m³	47
=29	Quezon City	Philippines	Good	8.4 µg/m³	47
=29	Belo Horizonte	Brazil	Good	8.4 µg/m³	47
=30	Shenyang	China	Good	8.6 µg/m³	48
=30	Bucharest	Romania	Good	8.7 µg/m³	48
=30	Prague	Czechia	Good	8.7 µg/m³	48
=30	Mandalay	Myanmar	Good	8.7 µg/m³	48
=31	Nagoya	Japan	Good	8.9 µg/m³	49
=31	Daqing	China	Good	8.9 µg/m³	49
=31	Kazan	Russia	Good	8.9 µg/m³	49
=32	Dar es Salaam	Tanzania	Moderate	9.1 µg/m³	51
=32	Yantai	China	Moderate	9.2 µg/m³	51
=32	Munich	Germany	Moderate	9.2 µg/m³	51
=33	Aleppo	Syria	Moderate	9.9 µg/m³	52
=33	Quito	Ecuador	Moderate	9.5 µg/m³	52
=33	León de los Aldama	Mexico	Moderate	9.6 µg/m³	52
=33	Phoenix	United States	Moderate	9.7 µg/m³	52
=33	Porto Alegre	Brazil	Moderate	9.9 µg/m³	52
=33	Kalyān	India	Moderate	9.4 µg/m³	52
=34	Tokyo	Japan	Moderate	10.4 µg/m³	53
=34	Yokohama	Japan	Moderate	10.4 µg/m³	53
=34	Houston	United States	Moderate	10.2 µg/m³	53
=34	Diyarbakır	Türkiye	Moderate	10.2 µg/m³	53
=34	Kawasaki	Japan	Moderate	10.4 µg/m³	53
=34	Neijiang	China	Moderate	10.1 µg/m³	53
=35	Yangon	Myanmar	Moderate	10.7 µg/m³	54
=35	Chattogram	Bangladesh	Moderate	10.7 µg/m³	54
=35	Cali	Colombia	Moderate	10.8 µg/m³	54
=35	Indore	India	Moderate	10.5 µg/m³	54
=35	Budapest	Hungary	Moderate	10.6 µg/m³	54
=35	Puebla	Mexico	Moderate	10.9 µg/m³	54
=35	Tabriz	Iran	Moderate	10.6 µg/m³	54
=35	Fushun	China	Moderate	10.8 µg/m³	54
=35	Liupanshui	China	Moderate	10.6 µg/m³	54
=35	Mombasa	Kenya	Moderate	10.9 µg/m³	54
=36	Ahmedabad	India	Moderate	11.4 µg/m³	55
=36	Cape Town	South Africa	Moderate	11.5 µg/m³	55

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, Novosibirsk has the lowest current PM2.5-based US AQI at about 8 (as of September 15, 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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