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
5am
15
35
35
8am
35
35
35
11am
35
35
35
2pm
35
35
35
5pm
35
35
—
8pm
—
—
—
11pm
—
—
—
2am
—
—
CAMS model
adj -19
34
34
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 2026-08-08T08:59 UTC.