Air quality in USA

Air quality index (AQI) and PM2.5 air pollution in USA

LAST UPDATE (local time)

LIVE AQI CITY RANKING

Real-time USA
Most polluted city ranking

#cityUS AQI
1 Imperial, Pennsylvania

159

2 Sykesville, Maryland

123

3 Nogales, Arizona

119

4 King City, Oregon

115

5 Yuma, Arizona

110

6 Keizer, Oregon

108

7 Wilsonville, Oregon

107

8 San Tan Valley, Arizona

105

9 Canby, Oregon

104

10 Pigeon, Michigan

103

(local time)

SEE WORLD AQI RANKING

Air Quality contributors Sources

Data provided by

Contributors

98

Data sources

52

The profile logo of Environmental Protection AgencyThe profile logo of New York State Department of Environmental Conservation (NYSDEC) The profile logo of Lane Regional Air Protection Agency (LRAPA)The profile logo of AirVisualThe profile logo of California Air Resources Board (CARB)The profile logo of Bay Area Air Quality Management District (BAAQMD)

Get your own monitor to measure air quality by yourself and join the movement.

Become a contributor
Find out more about contributors and data sources

LIVE AQI CITY RANKING

Real-time USA
Cleanest city ranking

#cityUS AQI
1 Air Force Academy, Colorado

0

2 Aliso Viejo, California

0

3 Anchor Point, Alaska

0

4 Ashburn, Virginia

0

5 Aurora, Colorado

0

6 Black Forest, Colorado

0

7 Box Elder, South Dakota

0

8 Brighton Park, Illinois

0

9 Carbondale, Colorado

0

10 Conejos, Colorado

0

(local time)

SEE WORLD AQI RANKING
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
rectangle shape clicked to open the map in fullscreen
plus icon clicked to zoom the map in
minus icon clicked to zoom the map out

OVERVIEW

How polluted is USA?

The national flag of Rest of the world

2019 Air quality average

Human face indicating AQI level

Good

2019 average US AQI

37

2019  USA cleanest cityKailua-Kona, Hawaii

8

2019  USA most polluted cityPortola, California

61

2019 aqi country ranking

How does USA rank globally in air pollution?

87/ 98 countries ranked in 2019

Which country had the worst air quality in 2019?

#COUNTRYPopulationAVG. US AQI
1The national flag of Rest of the worldBangladesh166'368'149

165

2The national flag of Rest of the worldPakistan200'813'818

156

3The national flag of Rest of the worldMongolia3'121'772

154

4The national flag of Rest of the worldAfghanistan36'373'176

153

5The national flag of Rest of the worldIndia1'354'051'854

152

6The national flag of Rest of the worldIndonesia266'794'980

141

7The national flag of Rest of the worldBahrain1'566'993

129

8The national flag of Rest of the worldNepal29'624'035

123

9The national flag of Rest of the worldUzbekistan32'364'996

115

10The national flag of Rest of the worldIraq39'127'900

111

87The national flag of Rest of the worldUSA326'766'748

37

SEE DETAIL

How to best protect from air pollution?

Reduce your air pollution exposure in USA

USA air quality data sources

Contributors 98

Data sources 52

Connect With IQAir

Sign up for our newsletter