Air Quality in Hamilton, Canada

Windy
24.2°C · 65.6% humidity
24.2°
Feels 24.2°
116
Unhealthy for sensitive groups
Sensitive groups should reduce prolonged outdoor exertion.
Model forecast

Nearby Monitoring Stations

AQI Forecast Calibrated
19 10am
26
26
116 1pm
90
72
59 4pm
70
63
38 7pm
28
23
21 10pm
20
19
21 1am
18
18
18 4am
17
17
19 7am
19
16
Station readings 18h ago
AQI 95
PM2.5 33.0 µg/m³ · 18h ago
CAMS model adj -8
27
34
34
34
34
34
34
54
54
34
27
25
25
25
25
27
25
25
25
25
25
27
27
24
AD 728×90

Air Quality Index Trend

8h · 4 stn

Hamilton'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 Hamilton is 2.8× the WHO 24-hour guideline of 15 µg/m³.

65.6%
Humidity
48.4 km/h
Wind ENE
1014.8 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
116
41.58 µg/m³
PM10
65
84.3 µg/m³
050100150200300500

What is the weather forecast for Hamilton?

Temperature & Precipitation

PM2.5 Trend

8h · 4 stations
PM2.541.58 µg/m³ ×2.8 WHO
Unhealthy for sensitive groups
PM1084.3 µg/m³
Moderate
UV INDEX17.4
Extreme
AD 300×250

What is the 7-day forecast for Hamilton?

07-21
26.0° 19.8°
0.88 mm
07-22
24.1° 18.7°
07-23
22.4° 15.4°
07-24
25.3° 14.6°
07-25
24.8° 14.8°
1.94 mm
07-26
28.6° 17.9°
2.56 mm
07-27
29.7° 19.9°
0.19 mm
Both models agree Avg diff: 2.8°C

Where are air quality stations near Hamilton?

38
Hamilton Downtown, Ontario, Canada
1.3 km PM2.5: 9.1 µg/m³
24
Hamilton Downtown, Ontario, Canada
1.3 km PM2.5: 5.8 µg/m³
10
Hamilton Downtown, Ontario, Canada
1.3 km PM2.5: 2.4 µg/m³
26
Hamilton Mountain, Ontario, Canada
2.5 km PM2.5: 6.2 µg/m³
10
Hamilton Mountain, Ontario, Canada
2.5 km PM2.5: 2.4 µg/m³
6
Hamilton West, Ontario, Canada
4.8 km PM2.5: 1.4 µg/m³
13
Hamilton West, Ontario, Canada
4.8 km PM2.5: 3.1 µg/m³
52
Burlington, Ontario, Canada
8.2 km PM2.5: 12.6 µg/m³
31
Burlington, Ontario, Canada
8.2 km PM2.5: 7.4 µg/m³

What cities are near Hamilton?

116 Stoney Creek 147 Waterdown 147 Ancaster 147 Burlington 116 Grimsby 93 Oakville 93 Milton 145 Brantford 114 Christopher-Champlain 145 Fiddlesticks
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:18 UTC.