St Marys Sydney North-west

Monitoring Station · St Clair, Australia
115
Unhealthy for sensitive groups
Sensitive groups should reduce prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
50 12am
50
50
37 3am
37
37
37 6am
37
37
37 9am
37
37
37 12pm
25
25
— 3pm
—
—
— 6pm
—
—
— 9pm
—
—

Air Quality Trend (24h)

Nearby Monitoring Stations

30
St Marys Sydney North-west
0.0 km
103
St Marys Sydney North-west
0.0 km
52
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 2026-04-10T03:54 UTC.