Air Quality in Castle Hill, Australia
Clear
24.4°C · 35.7% humidity
24.4°
Feels 24.4°
66
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations
Nearby Monitoring Stations
AQI Forecast
Calibrated
58
11pm
34
30
34
2am
21
21
21
5am
21
21
21
8am
21
21
21
11am
21
9
9
2pm
9
9
9
5pm
9
9
9
8pm
21
21
Station readings
58
34
30
CAMS model
adj -16
75
50
50
50
37
37
37
37
37
37
37
37
37
37
25
25
25
25
25
25
25
25
37
37
PM2.5 Trend (24h)
26h · 1 station35.7%
Humidity
35.3 km/h
Wind N
1019.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
What is the weather forecast for Castle Hill?
Temperature & Precipitation
PM2.519.32 µg/m³
×1.3 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
19.32
Median
19.32
Average
15.19
Low
23.44
High
PM2.5 µg/m³ · Model: 23.4 · Bias: +4.1
What is the 7-day forecast for Castle Hill?
04-10
26.7° 17.1°
04-11
26.7° 14.3°
0.19 mm
04-12
21.8° 11.6°
04-13
24.3° 12.9°
04-14
26.3° 15.0°
04-15
18.9° 14.9°
0.69 mm
04-16
20.0° 13.3°
0.88 mm
Both models agree
Avg diff: 2.1°C
Where are air quality stations near Castle Hill?
64
North Parramatta Sydney North-west
47
North Parramatta Sydney North-west
20
North Parramatta Sydney North-west
55
North Parramatta Sydney North-west
58
North Parramatta Sydney North-west
63
North Parramatta Sydney North-west
48
North Parramatta Sydney North-west
39
North Parramatta Sydney North-west
47
North Parramatta Sydney North-west
48
North Parramatta Sydney North-west
What cities are near Castle Hill?
Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-10T02:10 UTC.