Air Quality in Hornsby, Australia

Windy
15.0°C · 53.8% humidity
15.0°
Feels 15.0°
57
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
3 stations

Nearby Monitoring Stations

AQI Forecast
54 10am
54
34
57 1pm
50
46
42 4pm
60
58
57 7pm
56
36
35 10pm
28
28
54 1am
54
34
34 4am
54
54
54 7am
54
54
AD 728×90

Air Quality Index Trend

47h · 1 stn

Hornsby'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.

53.8%
Humidity
46.2 km/h
Wind W
1015.7 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
57
14.82 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Hornsby?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.514.82 µg/m³ ✓ WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX5.9
High
AD 300×250
Station readings (3 stations within 25 km)
14.82
Median
14.65
Average
10.22
Low
21.72
High
PM2.5 µg/m³ · Model: 10.85 · Bias: -4.0

What is the 7-day forecast for Hornsby?

06-09
15.0° 9.0°
1.75 mm
06-10
16.8° 11.6°
1.13 mm
06-11
17.9° 5.1°
1.06 mm
06-12
16.2° 9.1°
06-13
15.8° 8.3°
06-14
18.0° 15.0°
50.06 mm
06-15
17.8° 9.5°
Both models agree Avg diff: 2.9°C

Where are air quality stations near Hornsby?

61
Macquarie Park Sydney East
7.8 km PM2.5: 16.9 µg/m³
15
Macquarie Park Sydney East
7.8 km PM2.5: 3.6 µg/m³
63
Macquarie Park Sydney East
7.8 km PM2.5: 17.8 µg/m³
50
Macquarie Park Sydney East
7.8 km PM2.5: 12.0 µg/m³
29
Macquarie Park Sydney East
7.8 km PM2.5: 7.0 µg/m³
57
Macquarie Park Sydney East
7.8 km PM2.5: 15.0 µg/m³
113
Macquarie Park Sydney East
7.8 km PM2.5: 40.4 µg/m³
87
Macquarie Park Sydney East
7.8 km PM2.5: 29.2 µg/m³
23
Macquarie Park Sydney East
7.8 km PM2.5: 5.5 µg/m³
53
North Parramatta Sydney North-west
14.3 km PM2.5: 13.1 µg/m³

What cities are near Hornsby?

57 Wahroonga 57 Cherrybrook 57 Saint Ives 57 West Pennant Hills 54 Epping 59 Castle Hill 54 Carlingford 54 Eastwood 57 Baulkham Hills 55 Ryde
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T03:51 UTC.