Herrick Ave ES (4515)

Monitoring Station · Sylmar, United States
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
41 12am
34
29
34 3am
34
59
59 6am
59
59
59 9am
59
59
59 12pm
59
59
— 3pm
—
—
— 6pm
—
—
— 9pm
—
—
Station readings
41
34
29
CAMS model adj -16
50
50
37
50
50
75
75
75
75
75
75
75
75
75
75

Air Quality Trend (24h)

PM2.57.0 µg/m³ ✓ WHO
Good

Nearby Monitoring Stations

20
Sylmar Public Library - Inside
1.4 km PM2.5: 4.8 µg/m³
29
Sylmar Public Library - Outside
1.5 km PM2.5: 7.0 µg/m³
34
Dyer ES (3493)
2.3 km PM2.5: 8.1 µg/m³
32
Gridley ES (4295)
3.5 km PM2.5: 7.7 µg/m³
24
Van Gogh ES (7422)
4.0 km PM2.5: 5.7 µg/m³
25
Knollwood ES (4762)
4.2 km PM2.5: 6.0 µg/m³
43
North Valley Occupational Ctr (9329)
4.3 km PM2.5: 10.4 µg/m³
40
San Fernando MS (8358)
4.4 km PM2.5: 9.7 µg/m³

Nearby Cities

38 Sylmar 39 San Fernando 41 North Hills 29 Santa Clarita 40 Northridge 37 Canyon Country 28 Stevenson Ranch 39 Chatsworth 41 Reseda

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-10T03:52 UTC.