Is time to run? ⚠️☢️☣️

Hamilton (Ontario) (CA)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Cloudy
3°C
Cloudy
Humidity
90.4%
Wind
6 m/s
Pressure
998.1 hPa
Direction
244°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-11° / 4°
Precip.
8.2mm
Max wind
8.1 m/s

Hourly Forecast

14.01
Now
Weather
6
14.01
13:00
Weather
5
14.01
14:00
Weather
5
14.01
15:00
Weather
14.01
16:00
Weather
14.01
17:00
Weather
14.01
18:00
Weather
14.01
19:00
Weather
14.01
20:00
Weather
14.01
21:00
Weather
14.01
22:00
Weather
0.2
14.01
23:00
Weather
0.2
5
15.01
00:00
Weather
-1°
0.2
7
15.01
01:00
Weather
-3°
0.4
7
15.01
02:00
Weather
-4°
0.4
8
15.01
03:00
Weather
-5°
0.4
8
15.01
04:00
Weather
-6°
0.7
7
15.01
05:00
Weather
-7°
0.8
7
15.01
06:00
Weather
-8°
0.7
7
15.01
07:00
Weather
-9°
0.7
8
15.01
08:00
Weather
-9°
0.9
8
15.01
09:00
Weather
-10°
0.9
8
15.01
10:00
Weather
-11°
0.9
7
15.01
11:00
Weather
-11°
0.8
8

Temperature

4°C
-11°C
12:00
3°C
13:00
3°C
14:00
3°C
15:00
3°C
16:00
3°C
17:00
4°C
18:00
4°C
19:00
3°C
20:00
2°C
21:00
2°C
22:00
1°C
23:00
0°C
00:00
-1°C
01:00
-3°C
02:00
-4°C
03:00
-5°C
04:00
-6°C
05:00
-7°C
06:00
-8°C
07:00
-9°C
08:00
-9°C
09:00
-10°C
10:00
-11°C
11:00
-11°C
12:00 23:00 11:00

Precipitation

0.9mm
0mm
22:00
0.2mm
23:00
0.2mm
00:00
0.2mm
01:00
0.4mm
02:00
0.4mm
03:00
0.4mm
04:00
0.7mm
05:00
0.8mm
06:00
0.7mm
07:00
0.7mm
08:00
0.9mm
09:00
0.9mm
10:00
0.9mm
11:00
0.8mm
12:00 23:00 11:00

Wind

8.1m/s
0m/s
12:00
5.5 m/s
13:00
5.3 m/s
14:00
5.1 m/s
15:00
4.5 m/s
16:00
4.1 m/s
17:00
4.2 m/s
18:00
4.1 m/s
19:00
4 m/s
20:00
4.3 m/s
21:00
4.5 m/s
22:00
4.7 m/s
23:00
5.2 m/s
00:00
7 m/s
01:00
7.3 m/s
02:00
7.6 m/s
03:00
8.1 m/s
04:00
7 m/s
05:00
7.2 m/s
06:00
7.4 m/s
07:00
7.5 m/s
08:00
7.8 m/s
09:00
7.6 m/s
10:00
7.3 m/s
11:00
8 m/s
12:00 23:00 11:00

Radiation

0.031 uSv
5.8 km
3.9%

Measurement time: 2026-01-14 09:00

source: remap_europe

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
68.6 km
152
50.7%

Measurement time: 2026-01-14 13:00

Calculated from PM2.5/PM10

PM2.5
68.6 km
59 µg/m3
70.2%

Measurement time: 2026-01-14 13:00

source: Aqicn

NO2
68.6 km
16.5 µg/m3
8.3%

Measurement time: 2026-01-14 13:00

source: Aqicn

O3
36.4 km
12.1 µg/m3
7.6%

Measurement time: 2026-01-14 13:00

source: Aqicn

SO2
68.6 km
0.8 µg/m3
0.2%

Measurement time: 2026-01-14 13:00

source: Aqicn

Info


Country: Canada
Region: Ontario
Latitude: 43.25011
Longitude: -79.84963


Solar Energy

Very low
86.4 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Hamilton

About Air Quality in Hamilton

Air quality in Hamilton is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Hamilton

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Hamilton?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Hamilton

If you're planning outdoor activities in Hamilton, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.