St Marys Sydney North-west Air Quality
Monitoring Station
· St Clair, Australia
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading
Nearby Monitoring Stations
GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
Calibrated
15
6am
35
35
35
9am
35
35
35
12pm
35
35
35
3pm
35
35
35
6pm
35
35
—
9pm
—
—
—
12am
—
—
—
3am
—
—
CAMS model
adj -19
34
54
54
54
54
54
54
54
54
54
54
54
54
54
54
Air Quality Forecast (24h)
PM2.57.0 µg/m³
✓ WHO
Good
Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-08T09:20 UTC.