St Marys Sydney North-west Air Quality
Monitoring Station
· St Clair, Australia
55
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading
Nearby Monitoring Stations
GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
Calibrated
49
10pm
55
29
22
1am
22
22
22
4am
22
22
29
7am
49
49
49
10am
49
49
—
1pm
—
—
—
4pm
—
—
—
7pm
—
—
Station readings
55
CAMS model
adj -5
54
54
34
27
27
27
27
27
27
34
54
54
54
54
54
Air Quality Forecast (24h)
PM2.514.0 µg/m³
✓ WHO
Moderate
Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-06-09T01:51 UTC.