St Marys Sydney North-west

Monitoring Station · St Clair, Australia
52
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
3 1am
52
37
37 4am
37
37
37 7am
37
37
37 10am
37
37
25 1pm
25
—
— 4pm
—
—
— 7pm
—
—
— 10pm
—
—

Air Quality Trend (24h)

Nearby Monitoring Stations

115
St Marys Sydney North-west
0.0 km
30
St Marys Sydney North-west
0.0 km
103
St Marys Sydney North-west
0.0 km
51
St Marys Sydney North-west
0.0 km
135
Sydney Penrith
9.6 km
11
Sydney Penrith
9.6 km
37
Sydney Penrith
9.6 km
17
Sydney Penrith
9.6 km

Nearby Cities

9 St Clair 8 Mount Druitt 5 Glenmore Park 11 Cranebrook 8 Quakers Hill 28 Blacktown 24 Seven Hills 31 Glenwood 26 Greystanes

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-10T04:21 UTC.