Air Quality in St Clair, Australia

Drizzle
9.3°C · 81.6% humidity
9.3°
Feels 4.9°
83
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast

Nearby Monitoring Stations

AQI Forecast
83 10am
54
54
83 1pm
69
59
52 4pm
67
63
61 7pm
59
57
56 10pm
56
55
55 1am
55
54
54 4am
54
54
54 7am
54
54
AD 728×90

Air Quality Index Trend

43h · 18 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. Current PM2.5 concentration in St Clair is 1.8× the WHO 24-hour guideline of 15 µg/m³.

81.6%
Humidity
43.8 km/h
Wind SSE
1031.9 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
83
27.1 µg/m³
PM10
44
48.05 µg/m³
050100150200300500

What is the weather forecast for St Clair?

Temperature & Precipitation

PM2.5 Trend

43h · 18 stations
PM2.527.1 µg/m³ ×1.8 WHO
Moderate
PM1048.05 µg/m³
Good
UV INDEX1.4
Low
AD 300×250

What is the 7-day forecast for St Clair?

08-03
15.5° 8.3°
3.31 mm
08-04
17.6° 7.4°
0.06 mm
08-05
15.6° 9.5°
0.13 mm
08-06
17.8° 6.2°
08-07
16.9° 9.8°
1.31 mm
08-08
14.4° 7.3°
1.88 mm
08-09
15.3° 8.4°
1.0 mm
Both models agree Avg diff: 2.6°C

Where are air quality stations near St Clair?

31
St Marys Sydney North-west
1.7 km PM2.5: 7.4 µg/m³
21
St Marys Sydney North-west
1.7 km PM2.5: 5.0 µg/m³
60
St Marys Sydney North-west
1.7 km PM2.5: 16.4 µg/m³
22
St Marys Sydney North-west
1.7 km PM2.5: 5.3 µg/m³
47
St Marys Sydney North-west
1.7 km PM2.5: 11.3 µg/m³
25
St Marys Sydney North-west
1.7 km PM2.5: 6.0 µg/m³
16
St Marys Sydney North-west
1.7 km PM2.5: 3.8 µg/m³
69
St Marys Sydney North-west
1.7 km PM2.5: 20.7 µg/m³
32
St Marys Sydney North-west
1.7 km PM2.5: 7.7 µg/m³
32
St Marys Sydney North-west
1.7 km PM2.5: 7.7 µg/m³

What cities are near St Clair?

83 Mount Druitt 74 Glenmore Park 83 Quakers Hill 83 Cranebrook 83 Blacktown 83 Seven Hills 46 Greystanes 83 Glenwood 43 Fairfield 34 Cabramatta
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T03:24 UTC.