Air Quality in Sylmar, United States

Windy
32.6°C · 14.0% humidity
32.6°
Feels 32.6°
21
Good
Air quality is satisfactory. Enjoy outdoor activities.
87 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
19 11am
19
19
21 2pm
19
19
19 5pm
19
19
19 8pm
19
19
19 11pm
19
19
19 2am
19
19
31 5am
19
19
19 8am
19
19
Station readings
17
25
12
17
CAMS model adj -35
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
66
54
54
54
54
54
AD 728×90

Air Quality Index Trend

40h · 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. Current PM2.5 concentration in Sylmar is 1.0× the WHO annual guideline of 5 µg/m³.

14.0%
Humidity
66.6 km/h
Wind WSW
1010.9 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
21
5.07 µg/m³
PM10▲
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Sylmar?

Temperature & Precipitation

PM2.5 Trend

40h · 1 station
PM2.55.07 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (87 stations within 25 km)
5.07
Median
5.08
Average
2.72
Low
7.54
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +8.4

What is the 7-day forecast for Sylmar?

05-28
28.9° 13.5°
05-29
32.6° 14.3°
05-30
20.7° 10.9°
05-31
29.9° 17.2°
06-01
32.6° 12.9°
06-02
29.7° 10.9°
06-03
31.0° 8.1°
Both models agree Avg diff: 5.0°C

Where are air quality stations near Sylmar?

21
Sylmar Public Library - Outside
0.1 km PM2.5: 5.1 µg/m³
18
Sylmar Public Library - Inside
0.3 km PM2.5: 4.3 µg/m³
25
Dyer ES (3493)
0.9 km PM2.5: 5.9 µg/m³
23
Herrick Ave ES (4515)
1.6 km PM2.5: 5.4 µg/m³
20
Gridley ES (4295)
1.9 km PM2.5: 4.9 µg/m³
24
Harding ES (4431)
3.0 km PM2.5: 5.8 µg/m³
20
San Fernando MS (8358)
3.1 km PM2.5: 4.8 µg/m³
24
North Valley Occupational Ctr (9329)
3.5 km PM2.5: 5.7 µg/m³
23
Danube ES (3335)
4.4 km PM2.5: 5.6 µg/m³
21
Knollwood ES (4762)
4.7 km PM2.5: 5.0 µg/m³

What cities are near Sylmar?

20 San Fernando 22 North Hills 21 Northridge 24 Santa Clarita 22 Canyon Country 20 Van Nuys 23 Valley Glen 19 Sunland 21 Reseda 22 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 2026-05-28T21:47 UTC.