Air Quality in St Clair, Australia

Drizzle
16.0°C · 76.7% humidity
16.0°
Feels 16.0°
41
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast

Nearby Monitoring Stations

AQI Forecast
54 4pm
54
54
41 7pm
25
27
29 10pm
51
52
52 1am
53
53
53 4am
54
54
54 7am
54
54
34 10am
34
34
34 1pm
54
54

Air Quality Index Trend

46h · 4 stn

St Clair's air quality is generally good but can be impacted by bushfire smoke, dust storms, and vehicle emissions. Seasonal fire events can cause significant temporary air quality deterioration.

76.7%
Humidity
46.0 km/h
Wind S
1021.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
41
9.75 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for St Clair?

Temperature & Precipitation

PM2.5 Trend

46h · 4 stations
PM2.59.75 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.7
Low

What is the 7-day forecast for St Clair?

09-23
34.2° 15.3°
0.13 mm
09-24
27.0° 7.5°
09-25
33.4° 9.6°
09-26
18.3° 11.5°
0.31 mm
09-27
27.9° 10.3°
0.19 mm
09-28
23.5° 11.9°
5.81 mm
09-29
24.5° 7.8°
0.06 mm
Both models agree Avg diff: 5.6°C

Where are air quality stations near St Clair?

48
St Marys Sydney North-west
1.7 km PM2.5: 11.5 µg/m³
47
St Marys Sydney North-west
1.7 km PM2.5: 11.3 µg/m³
36
St Marys Sydney North-west
1.7 km PM2.5: 8.6 µg/m³
26
St Marys Sydney North-west
1.7 km PM2.5: 6.2 µg/m³
13
St Marys Sydney North-west
1.7 km PM2.5: 3.1 µg/m³
55
St Marys Sydney North-west
1.7 km PM2.5: 14.0 µg/m³
42
Sydney Penrith
10.8 km PM2.5: 10.1 µg/m³
43
Sydney Penrith
10.8 km PM2.5: 10.3 µg/m³
29
Sydney Penrith
10.8 km PM2.5: 7.0 µg/m³
14
Sydney Penrith
10.8 km PM2.5: 3.4 µg/m³

What cities are near St Clair?

41 Mount Druitt 42 Glenmore Park 41 Quakers Hill 41 Cranebrook 41 Blacktown 41 Seven Hills 35 Greystanes 41 Glenwood 34 Fairfield 24 Cabramatta
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-23T09:27 UTC.