Concord, Contra Costa, California Air Quality

Monitoring Station · Pleasant Hill, United States
55
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
39 11pm
39
46
46 2am
46
46
39 5am
39
39
39 8am
46
46
39 11am
39
39
2pm
5pm
8pm
CAMS model adj +12
27
27
34
34
34
34
27
27
27
27
34
34
27
27
27
PM2.514.0 µg/m³ ✓ WHO
Moderate
View city history →

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-06-09T02:17 UTC.