Harding ES (4431) Air Quality

Monitoring Station · Sylmar, United States
54
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
57 11pm
54
58
58 2am
58
58
58 5am
58
58
58 8am
58
70
70 11am
70
70
2pm
5pm
8pm
Station readings
57
54
CAMS model adj +4
54
54
54
54
54
54
54
54
54
54
54
66
66
66
66
PM2.513.5 µg/m³ ✓ WHO
Moderate
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Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-06-09T02:42 UTC.