Air Quality in Sylmar, United States

Windy
30.9°C · 23.9% humidity
30.9°
Feels 30.9°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
84 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
26 7am
26
26
38 10am
35
32
30 1pm
29
28
28 4pm
27
27
27 7pm
26
26
26 10pm
26
26
26 1am
26
26
38 4am
38
38
Station readings
33
25
29
CAMS model adj -28
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
66
66
66
AD 728×90

Air Quality Index Trend

47h · 1 stn

Sylmar's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

23.9%
Humidity
57.3 km/h
Wind SSW
1008.4 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
38
9.19 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Sylmar?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.59.19 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX9.4
Very High
AD 300×250
Station readings (84 stations within 25 km)
9.19
Median
8.84
Average
2.96
Low
15.32
High
PM2.5 µg/m³ · Model: 10.85 · Bias: +1.7
Both models agree Avg diff: 2.8°C

Where are air quality stations near Sylmar?

40
Sylmar Public Library - Outside
0.1 km PM2.5: 9.7 µg/m³
28
Sylmar Public Library - Inside
0.3 km PM2.5: 6.7 µg/m³
50
Dyer ES (3493)
0.9 km PM2.5: 11.9 µg/m³
46
Herrick Ave ES (4515)
1.6 km PM2.5: 11.0 µg/m³
44
Gridley ES (4295)
1.9 km PM2.5: 10.6 µg/m³
51
Harding ES (4431)
3.0 km PM2.5: 12.2 µg/m³
46
San Fernando MS (8358)
3.1 km PM2.5: 11.0 µg/m³
47
North Valley Occupational Ctr (9329)
3.5 km PM2.5: 11.2 µg/m³
46
Danube ES (3335)
4.4 km PM2.5: 11.1 µg/m³
43
Knollwood ES (4762)
4.7 km PM2.5: 10.3 µg/m³

What cities are near Sylmar?

45 San Fernando 42 North Hills 37 Northridge 38 Santa Clarita 39 Canyon Country 29 Van Nuys 38 Valley Glen 27 Sunland 38 Reseda 37 Stevenson Ranch
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:13 UTC.