United States

Air Quality in California, United States

Right now

No air quality recorded here in the last 24 hours.

37, recorded here, since 6 August 2026

3 in the last 30 days. Most recent: 8 October 2026 (24 days ago).

The 2nd strongest of the 37 recorded here since 6 August 2026.

By month

  • August 20261
  • September 202629
  • October 20267

September 2026 is the most active month of the 3 in our series here, with 29 events.

Hazards recorded here

Recent events

Air QualityLow

Unhealthy for Sensitive Groups Air Quality, Central LA CO

8 October 2026time not reported by the sourceIndex 50 · version not recorded
Air QualityLow

Unhealthy for Sensitive Groups Air Quality, San Jose

5 October 2026time not reported by the sourceIndex 46 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 159)

3 October 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityCritical

Hazardous Air Quality (AQI 382)

2 October 2026time not reported by the sourceIndex 55 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 157)

2 October 2026time not reported by the sourceIndex 41 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 153)

2 October 2026time not reported by the sourceIndex 37 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 166)

1 October 2026time not reported by the sourceIndex 37 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 152)

30 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityHigh

Very Unhealthy Air Quality (AQI 296)

28 September 2026time not reported by the sourceIndex 36 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 172)

28 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 161)

27 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 153)

27 September 2026time not reported by the sourceIndex 41 · version not recorded
Air QualityLow

Unhealthy for Sensitive Groups Air Quality, Central LA CO

27 September 2026time not reported by the sourceIndex 50 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 176)

26 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 164)

22 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 171)

20 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 153)

18 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 199)

13 September 2026time not reported by the sourceIndex 41 · version not recorded
Air QualityHigh

Very Unhealthy Air Quality (AQI 279)

13 September 2026time not reported by the sourceIndex 44 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 179)

13 September 2026time not reported by the sourceIndex 41 · version not recorded
Air QualityHigh

Very Unhealthy Air Quality (AQI 233)

10 September 2026time not reported by the sourceIndex 48 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 151)

9 September 2026time not reported by the sourceIndex 46 · version not recorded
Air QualityLow

Unhealthy for Sensitive Groups Air Quality, San Diego Coast

9 September 2026time not reported by the sourceIndex 20 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 152)

8 September 2026time not reported by the sourceIndex 46 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 159)

8 September 2026time not reported by the sourceIndex 46 · version not recorded
Air QualityLow

Unhealthy for Sensitive Groups Air Quality, San Diego Coast

8 September 2026time not reported by the sourceIndex 20 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 153)

7 September 2026time not reported by the sourceIndex 46 · version not recorded
Air QualityLow

Unhealthy for Sensitive Groups Air Quality, San Diego Coast

7 September 2026time not reported by the sourceIndex 20 · version not recorded
Air QualityCritical

Hazardous Air Quality (AQI 440)

6 September 2026time not reported by the sourceIndex 43 · version not recorded
Air QualityCritical

Hazardous Air Quality (AQI 656)

5 September 2026time not reported by the sourceIndex 43 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 158)

3 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 164)

3 September 2026time not reported by the sourceIndex 41 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 151)

2 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 152)

2 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 153)

2 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityMedium

Unhealthy Air Quality (AQI 169)

1 September 2026time not reported by the sourceIndex 29 · version not recorded
Air QualityCritical

Hazardous Air Quality (AQI 811)

6 August 2026time not reported by the sourceIndex 14 · version not recorded

Towns with the most events here

Other areas

Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.

Administrative boundaries: geoBoundaries (geoboundaries.org), Public Domain. geoboundaries.org