Knollwood ES (4762) Air Quality
Monitoring Station
· Sylmar, United States
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading
Nearby Monitoring Stations
GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
Calibrated
41
2am
40
46
46
5am
46
46
46
8am
46
58
58
11am
58
58
58
2pm
46
46
—
5pm
—
—
—
8pm
—
—
—
11pm
—
—
Station readings
41
40
CAMS model
adj -8
54
54
54
54
54
54
54
54
66
66
66
66
66
54
54
Air Quality Forecast (24h)
PM2.59.6 µg/m³
✓ WHO
Good
Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-06-09T05:37 UTC.