What is the air quality in Alliston today?

The current Air Quality Index (AQI) in Alliston is 27 (Good). PM2.5 concentration is 6.53 µg/m³.

What is the temperature in Alliston right now?

The current temperature in Alliston is 7.1°C (feels like -0.3°C). Humidity is 93.5% and wind speed is 100.4 km/h.

Is it safe to go outside in Alliston?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Alliston, Canada

Windy

7.1°C · 93.5% humidity

7.1°

Feels -0.3°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

25 5pm

27 8pm

25 11pm

25 2am

27 5am

25 8am

27 11am

27 2pm

Air Quality Index Trend

48h · 6 stn

View full history →

Alliston's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

93.5%

Humidity

100.4 km/h

Wind NW

1001.3 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.53 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Alliston?

Temperature & Precipitation

PM2.5 Trend

48h · 6 stations

PM2.56.53 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (1 station within 25 km)

6.53

Median

6.53

Average

6.53

Low

6.53

High

PM2.5 µg/m³ · Model: 6.25 · Bias: -0.3

What is the 7-day forecast for Alliston?

06-09

27.5° 7.1°

0.56 mm

06-10

16.3° 11.3°

06-11

24.1° 8.7°

06-12

23.8° 13.9°

1.19 mm

06-13

23.9° 17.2°

3.5 mm

06-14

25.7° 11.1°

1.0 mm

06-15

28.1° 15.1°

0.56 mm

Both models agree Avg diff: 7.8°C

Where are air quality stations near Alliston?

NASA GSFC Rutgers Calib. N15

11.3 km PM2.5: 6.5 µg/m³

What cities are near Alliston?

30 Innisfil 30 Bolton 38 Orangeville 31 Barrie 41 Caledon 37 Keswick 48 Newmarket 48 East Gwillimbury 46 Aurora 36 Wasaga Beach

Get AQI alerts for Alliston

Notify me when air quality reaches:

ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T00:40 UTC.