USA Air Pollution Statistics
Top 10 Best and Worst Air Quality in USA

Share: aqicn.org/statistics/usa/

The statistics below corresponds to the real-time readings
last updated on .

Worst Air Quality Stations
Aspen PM, Colorado, USA
on 2026-07-02 13:00:00
132
graph 0
Cincinnati Near Road, Ohio, USA
on 2026-07-02 13:00:00
103
graph 1
Watertown, South Dakota, USA
on 2026-07-02 14:00:00
99
graph 2
Lostwood NWR, North Dakota, USA
on 2026-07-02 14:00:00
97
graph 3
Fargo NW, North Dakota, USA
on 2026-07-02 14:00:00
91
graph 4
Huron - 4th Street, Fresno, California
on 2026-07-02 12:00:00
91
graph 5
Fishers, Indiana, USA
on 2026-07-02 07:00:00
90
graph 6
North Braddock, Allegheny, Pennsylvania, USA
on 2026-07-02 12:00:00
88
graph 7
Lima, Ohio, USA
on 2026-07-02 13:00:00
87
graph 8
Holland, Michigan, USA
on 2026-07-02 13:00:00
85
graph 9

Best Air Quality Stations
Niumalu, Hawaii, USA
on 2026-07-02 14:00:00
0
graph 0
Kihei, Hawaii, USA
on 2026-07-02 14:00:00
5
graph 1
Floyd Dryden, Alaska
on 2026-07-02 12:00:00
8
graph 2
Salmon, Idaho, USA
on 2026-07-02 13:00:00
9
graph 3
Porthill, Idaho, USA
on 2026-07-02 12:00:00
10
graph 4
Taos Fire Station, New Mexico, USA
on 2026-07-02 12:00:00
11
graph 5
John Day, Oregon, USA
on 2026-07-02 13:00:00
12
graph 6
Madras, Oregon, USA
on 2026-07-02 13:00:00
14
graph 7
Bethel, Alaska
on 2026-07-02 12:00:00
14
graph 8
Ketchum, Idaho, USA
on 2026-07-02 13:00:00
14
graph 9


Statistics for other regions

World Oceania Asia Middle East Latin America Europe North America South America Africa China Taiwan Hong Kong Macao South Korea Japan Russia Bangladesh Nepal India Thailand Laos Myanmar Malaysia Singapore Ulaanbaatar Mongolia Vietnam Brunei Philippines Indonesia Sri Lanka Kazakhstan Tajikistan Kyrgyzstan Uzbekistan Cambodia Canada New Zealand Australia USA Peru Trinidad and Tobago Chile Brazil Mexico Colombia Curaçao Ecuador Venezuela Bolivia Argentina El Salvador Puerto Rico Guatemala Costa Rica France Estonia Spain United Kingdom Switzerland Czech Republic Italy Slovakia Norway Austria Cyprus Poland Belgium Netherlands Denmark Lithuania Hungary Romania Ireland Croatia Slovenia Malta Germany Finland Gibraltar New Caledonia Sweden Bulgaria Serbia Bosnia and Herzegovina Kosovo North Macedonia Montenegro Iceland Portugal Greece Ukraine Georgia Israel Turkey Iran UAE Oman Bahrain Kuwait Jordan Iraq Saudi Arabia Pakistan Afghanistan Turkmenistan South Africa Ethiopia Kenya Uganda Algeria Mali


Do you know of any Air Quality stations in your area?
why not participate to the map with your own air quality station?

Our GAIA air quality monitors are very easy to set up: You only need a WIFI access point and a USB compatible power supply.

Once connected, your real time air pollution levels are instantaneously available on the maps and through the API.

The station comes with a 10-meter water-proof power cable, a USB power supply, mounting equipment and an optional solar panel.

Click for more information

Looking for more air quality related products?

Home Air Purifiers
Protection Masks & Respirators
Home Air Purifiers
Personal Air Quality Monitors
DIY Air Sensors
Professional Air Quality Monitoring Stations


Air Quality Rankings

About the Air Quality and Pollution Measurement:

About the Air Quality Levels

AQI Air Pollution Level Health Implications Cautionary Statement (for PM2.5)
0 - 50 Good Air quality is considered satisfactory, and air pollution poses little or no risk None
51 -100 Moderate Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution. Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
101-150 Unhealthy for Sensitive Groups Members of sensitive groups may experience health effects. The general public is not likely to be affected. Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
151-200 Unhealthy Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion
201-300 Very Unhealthy Health warnings of emergency conditions. The entire population is more likely to be affected. Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.
300+ Hazardous Health alert: everyone may experience more serious health effects Everyone should avoid all outdoor exertion

To know more about Air Quality and Pollution, check the wikipedia Air Quality topic or the airnow guide to Air Quality and Your Health.

For very useful health advices of Beijing Doctor Richard Saint Cyr MD, check www.myhealthbeijing.com blog.


Usage Notice: All the Air Quality data are unvalidated at the time of publication, and due to quality assurance these data may be amended, without notice, at any time. The World Air Quality Index project has exercised all reasonable skill and care in compiling the contents of this information and under no circumstances will the World Air Quality Index project team or its agents be liable in contract, tort or otherwise for any loss, injury or damage arising directly or indirectly from the supply of this data.



Settings


Language Settings:


Temperature unit:
Celsius