St Marys Sydney North-west
Monitoring Station
· St Clair, Australia
51
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading
Nearby Monitoring Stations
GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
75
11pm
50
50
50
2am
37
37
37
5am
37
37
37
8am
37
37
37
11am
37
—
—
2pm
—
—
—
5pm
—
—
—
8pm
—
—
Air Quality Trend (24h)
Nearby Monitoring Stations
30
St Marys Sydney North-west
115
St Marys Sydney North-west
103
St Marys Sydney North-west
23
Sydney Penrith
37
Sydney Penrith
11
Sydney Penrith
19
Sydney Penrith
17
Sydney Penrith
Nearby Cities
Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-10T02:10 UTC.