Air Quality in Alliston, Canada
Windy
21.5°C · 36.7% humidity
21.5°
Feels 21.5°
31
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Alliston's air quality — share it
AQI Forecast
34
6pm
34
34
31
9pm
38
42
46
12am
60
62
51
3am
52
64
65
6am
53
33
25
9am
25
25
25
12pm
25
25
25
3pm
25
25
Air Quality Index Trend
45h · 6 stnAlliston's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
36.7%
Humidity
75.1 km/h
Wind NNW
1014.1 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.35 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Alliston?
Temperature & Precipitation
PM2.5 Trend
45h · 6 stationsPM2.57.35 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.9
Moderate
What is the 7-day forecast for Alliston?
08-03
22.9° 16.2°
3.25 mm
08-04
23.7° 14.7°
1.25 mm
08-05
31.3° 15.3°
0.06 mm
08-06
29.6° 18.2°
3.06 mm
08-07
27.7° 13.0°
3.5 mm
08-08
34.9° 16.9°
1.38 mm
08-09
34.6° 19.1°
2.75 mm
Both models agree
Avg diff: 3.6°C
Where are air quality stations near Alliston?
What cities are near Alliston?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T01:31 UTC.