Harding ES (4431) Air Quality

Monitoring Station · Sylmar, United States
46
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
48 5pm
46
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47 8pm
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47 11pm
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47 2am
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47 5am
47
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Station readings
48
46
CAMS model adj -7
54
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Air Quality Forecast (24h)

PM2.511.0 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

39
Gridley ES (4295)
1.1 km PM2.5: 9.4 µg/m³
43
Dyer ES (3493)
2.9 km PM2.5: 10.4 µg/m³
37
Sylmar Public Library - Outside
3.1 km PM2.5: 8.9 µg/m³
38
San Fernando MS (8358)
3.1 km PM2.5: 9.2 µg/m³
25
Sylmar Public Library - Inside
3.3 km PM2.5: 6.1 µg/m³
48
Maclay MS (8228)
3.9 km PM2.5: 11.5 µg/m³
40
Herrick Ave ES (4515)
4.5 km PM2.5: 9.6 µg/m³
40
North Valley Occupational Ctr (9329)
4.8 km PM2.5: 9.7 µg/m³

Nearby Cities

36 Sylmar 38 San Fernando 37 North Hills 27 Sunland 31 Tujunga 37 Valley Glen 28 Van Nuys 36 Northridge 35 Canyon Country

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-07-21T20:14 UTC.