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Air Quality in United States

Archived observations and advisories, with dates and reporting sources.

Is anything happening near you?

Type your town. Its page says what was recorded around it in the last 24 hours, 7 days and 30 days, and can tell you by e-mail the next time.

Your town or city

Archived records (30d)104

Archived records (90d)204

Cumulative urban PEI, all records33.7M

Recent events

Air QualityLowCS:50 · v5

Unhealthy for Sensitive Groups Air Quality, Phoenix

Phoenix2026-10-101d agoSource: airnowUrban PEI 1.2M Air QualityLowCS:46 · v5

Unhealthy for Sensitive Groups Air Quality, Dallas-Fort Worth

Dallas2026-10-101d agoSource: airnowUrban PEI 765.0K Air QualityMediumCS:29 · v5

Unhealthy Air Quality (AQI 153)

2026-10-101d agoSource: openaq Air QualityLowCS:46 · v5

Unhealthy for Sensitive Groups Air Quality, Columbus

Columbus2026-10-102d agoSource: airnowUrban PEI 637.1K Air QualityMediumCS:29 · v5

Unhealthy Air Quality (AQI 152)

2026-10-092d agoSource: openaq Air QualityLowCS:41 · v5

Unhealthy for Sensitive Groups Air Quality, Denver-Boulder

Denver2026-10-092d agoSource: airnowUrban PEI 464.5K Air QualityLowCS:46 · v5

Unhealthy for Sensitive Groups Air Quality, Indianapolis

Indianapolis2026-10-092d agoSource: airnowUrban PEI 617.0K Air QualityLowCS:41 · v5

Unhealthy for Sensitive Groups Air Quality, Denver-Boulder

Denver2026-10-083d agoSource: airnowUrban PEI 464.5K Air QualityLowCS:50 · v5

Unhealthy for Sensitive Groups Air Quality, Central LA CO

Los Angeles2026-10-084d agoSource: airnowUrban PEI 2.6M Air QualityLowCS:41 · v5

Unhealthy for Sensitive Groups Air Quality, Denver-Boulder

Denver2026-10-074d agoSource: airnowUrban PEI 464.5K Air QualityLowCS:46 · v5

Unhealthy for Sensitive Groups Air Quality, Dallas-Fort Worth

Dallas2026-10-075d agoSource: airnowUrban PEI 765.0K Air QualityLowCS:41 · v5

Unhealthy for Sensitive Groups Air Quality, Denver-Boulder

Denver2026-10-065d agoSource: airnowUrban PEI 464.5K Air QualityLowCS:46 · v5

Unhealthy for Sensitive Groups Air Quality, San Jose

San Jose2026-10-057d agoSource: airnowUrban PEI 685.9K Air QualityHighCS:39 · v5

Very Unhealthy Air Quality (AQI 291)

Cedar Park2026-10-047d agoSource: waqiUrban PEI 779 Air QualityMediumCS:50 · v5

Unhealthy Air Quality (AQI 153)

Wichita2026-10-048d agoSource: waqiUrban PEI 122.7K Air QualityMediumCS:41 · v5

Unhealthy Air Quality (AQI 196)

Casas Adobes2026-10-048d agoSource: waqiUrban PEI 11.3K Air QualityMediumCS:37 · v5

Unhealthy Air Quality (AQI 152)

Harrisburg2026-10-048d agoSource: waqiUrban PEI 6.2K Air QualityMediumCS:37 · v5

Unhealthy Air Quality (AQI 177)

Harrisburg2026-10-038d agoSource: waqiUrban PEI 6.2K Air QualityMediumCS:29 · v5

Unhealthy Air Quality (AQI 159)

2026-10-038d agoSource: waqi Air QualityCriticalCS:55 · v5

Hazardous Air Quality (AQI 382)

Turlock2026-10-029d agoSource: waqiUrban PEI 41.9K Air QualityMediumCS:41 · v5

Unhealthy Air Quality (AQI 157)

Hanford2026-10-029d agoSource: waqiUrban PEI 27.5K Air QualityMediumCS:37 · v5

Unhealthy Air Quality (AQI 153)

Fresno2026-10-029d agoSource: waqiUrban PEI 9.3K Air QualityMediumCS:29 · v5

Unhealthy Air Quality (AQI 165)

2026-10-0210d agoSource: waqi Air QualityCriticalCS:43 · v5

Hazardous Air Quality (AQI 880)

Anchorage2026-10-0110d agoSource: waqi Air QualityMediumCS:46 · v5

Unhealthy Air Quality (AQI 172)

St. Louis2026-10-0110d agoSource: waqiUrban PEI 64.1K Air QualityMediumCS:37 · v5

Unhealthy Air Quality (AQI 166)

Fresno2026-10-0110d agoSource: waqiUrban PEI 9.3K Air QualityLowCS:20 · v5

Unhealthy for Sensitive Groups Air Quality, Nashville

Brentwood Estates2026-09-3011d agoSource: airnow Air QualityMediumCS:46 · v5

Unhealthy Air Quality (AQI 178)

St. Louis2026-09-3011d agoSource: waqiUrban PEI 64.1K Air QualityMediumCS:29 · v5

Unhealthy Air Quality (AQI 152)

2026-09-3012d agoSource: waqi Air QualityMediumCS:41 · v5

Unhealthy Air Quality (AQI 151)

Tri-Cities2026-09-2912d agoSource: waqiUrban PEI 42.0K

All disasters in United States All air quality events