Air Quality in Halton Hills, Canada

Windy
25.8°C · 57.1% humidity
25.8°
Feels 25.8°
93
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
101 10am
101
101
93 1pm
95
97
105 4pm
106
106
107 7pm
100
98
99 10pm
99
101
101 1am
101
99
99 4am
99
99
101 7am
101
98
Station readings
124
123
30
CAMS model adj +74
27
27
27
27
27
27
34
34
34
34
27
25
25
25
27
27
27
25
25
25
25
27
27
24
AD 728×90

Air Quality Index Trend

47h · 1 stn

Halton Hills's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Halton Hills is 2.1× the WHO 24-hour guideline of 15 µg/m³.

57.1%
Humidity
45.9 km/h
Wind ESE
1014.9 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
93
32.09 µg/m³
PM10
65
84.3 µg/m³
050100150200300500

What is the weather forecast for Halton Hills?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.532.09 µg/m³ ×2.1 WHO
Moderate
PM1084.3 µg/m³
Moderate
UV INDEX14.9
Extreme
AD 300×250
Station readings (1 station within 25 km)
32.09
Median
32.09
Average
32.09
Low
32.09
High
PM2.5 µg/m³ · Model: 40.72 · Bias: +8.6

What is the 7-day forecast for Halton Hills?

07-21
25.8° 20.4°
4.44 mm
07-22
23.2° 17.9°
0.31 mm
07-23
19.3° 15.2°
07-24
22.5° 16.4°
07-25
22.3° 13.5°
0.25 mm
07-26
26.1° 17.7°
1.81 mm
07-27
26.8° 18.7°
0.75 mm
Both models agree Avg diff: 3.0°C

Where are air quality stations near Halton Hills?

30
Halton Hills Air Sensor
11.8 km PM2.5: 7.1 µg/m³ PM10: 7.7 µg/m³
25
Milton, Ontario, Canada
13.5 km PM2.5: 6.0 µg/m³
51
Milton, Ontario, Canada
13.5 km PM2.5: 12.1 µg/m³
55
Milton, Ontario, Canada
13.5 km PM2.5: 14.0 µg/m³
164
Milton, Ontario, Canada
13.5 km PM2.5: 80.7 µg/m³
30
Brampton, Ontario, Canada
13.7 km PM2.5: 7.2 µg/m³
29
Brampton, Ontario, Canada
13.7 km PM2.5: 7.0 µg/m³
37
Mississauga, Ontario, Canada
24.3 km PM2.5: 8.9 µg/m³
38
Mississauga, Ontario, Canada
24.3 km PM2.5: 9.1 µg/m³
54
Oakville, Ontario, Canada
25.1 km PM2.5: 13.5 µg/m³

What cities are near Halton Hills?

93 Georgetown 93 Brampton 93 Milton 93 Mississauga 71 Caledon 114 Guelph 70 West Humber-Clairville 83 Eringate-Centennial-West Deane 84 Etobicoke 93 Oakville
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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 2026-07-21T17:22 UTC.