Air Quality in Alliston, Canada

Windy
14.9°C · 86.1% humidity
14.9°
Feels 14.9°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
28 3pm
28
31
33 6pm
29
29
42 9pm
42
42
42 12am
29
29
42 3am
42
42
42 6am
29
42
42 9am
42
29
29 12pm
17
17
Station readings
28
28
31
33
CAMS model adj -8
37
37
37
37
37
37
50
50
50
50
37
37
50
50
50
50
37
50
50
50
37
37
25
25
AD 728×90

PM2.5 Trend (24h)

26h · 1 station
86.1%
Humidity
113.3 km/h
Wind SW
1019.9 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Alliston?

Temperature & Precipitation

PM2.55.46 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
5.46
Median
5.46
Average
5.46
Low
5.46
High
PM2.5 µg/m³ · Model: 7.4 · Bias: +1.9

What is the 7-day forecast for Alliston?

04-09
14.9° 3.0°
04-10
12.9° 10.3°
04-11
8.2° 2.3°
9.25 mm
04-12
6.5° 1.5°
0.06 mm
04-13
20.6° 6.0°
11.63 mm
04-14
22.0° 17.0°
4.88 mm
04-15
16.3° 3.5°
5.19 mm
Both models agree Avg diff: 3.9°C

Where are air quality stations near Alliston?

24
NASA GSFC Rutgers Calib. N15
11.3 km PM2.5: 5.7 µg/m³

What cities are near Alliston?

31 Innisfil 25 Bolton Orangeville 31 Barrie 6 Caledon 39 Keswick 6 Newmarket 3 East Gwillimbury 25 Aurora 1 Wasaga Beach

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T18:32 UTC.