What is the air quality in Bolton today?

The current Air Quality Index (AQI) in Bolton is 18 (Good). PM2.5 concentration is 4.4 µg/m³.

What is the temperature in Bolton right now?

The current temperature in Bolton is 3.6°C (feels like -2.7°C). Humidity is 70.7% and wind speed is 41.8 km/h.

Is it safe to go outside in Bolton?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Bolton, Canada

Windy

3.6°C · 70.7% humidity

3.6°

Feels -2.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

4 stations

Nearby Monitoring Stations

AQI Forecast

24 5pm

18 8pm

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Station readings

Air Quality Index Trend

48h · 3 stn

View full history →

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

70.7%

Humidity

41.8 km/h

Wind S

1028.8 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

4.4 µg/m³

PM10▲

27.4 µg/m³

050100150200300500

What is the weather forecast for Bolton?

Temperature & Precipitation

PM2.5 Trend

48h · 3 stations

PM2.54.4 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

Station readings (4 stations within 25 km)

4.4

Median

4.33

Average

3.61

Low

5.0

High

PM2.5 µg/m³ · Model: 8.2 · Bias: +3.8

What is the 7-day forecast for Bolton?

10-21

18.4° 3.6°

10-22

13.2° 4.5°

10-23

12.0° 0.8°

1.0 mm

10-24

14.4° 1.3°

0.75 mm

10-25

12.0° 3.2°

3.06 mm

10-26

8.2° 2.8°

9.81 mm

10-27

8.0° 2.3°

1.13 mm

Both models agree Avg diff: 3.9°C

Where are air quality stations near Bolton?

Brampton, Ontario, Canada

20.4 km PM2.5: 3.1 µg/m³

Brampton, Ontario, Canada

20.4 km PM2.5: 4.6 µg/m³

Brampton, Ontario, Canada

20.4 km PM2.5: 5.0 µg/m³

NASA GSFC Rutgers Calib. N20

23.7 km PM2.5: 3.6 µg/m³

Toronto West, Ontario, Canada

24.5 km PM2.5: 4.8 µg/m³

Toronto West, Ontario, Canada

24.5 km PM2.5: 5.8 µg/m³

Toronto West, Ontario, Canada

24.5 km PM2.5: 4.1 µg/m³

Toronto West, Ontario, Canada

24.5 km PM2.5: 5.3 µg/m³

Newmarket, Ontario, Canada

27.4 km PM2.5: 7.2 µg/m³

Newmarket, Ontario, Canada

27.4 km PM2.5: 5.8 µg/m³

What cities are near Bolton?

17 Mount Olive-Silverstone-Jamestown 17 Vaughan 28 Caledon 17 Humbermede 17 West Humber-Clairville 17 Black Creek 19 Brampton 17 Glenfield-Jane Heights 16 York University Heights 18 Richmond Hill

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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 2026-10-21T00:31 UTC.