Hourly Weather in Cornwall, Ontario, Canada
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
1 km/h
Calm
2 km/h
Calm
2 km/h
Calm
3 km/h
Calm
5 km/h
Calm
7 km/h
Calm
7 km/h
Calm
7 km/h
Calm
6 km/h
Calm
Humidity
100%
Extremely humid
100%
Extremely humid
97%
Extremely humid
85%
Extremely humid
72%
Extremely humid
63%
Humid
57%
Comfortable
53%
Comfortable
51%
Comfortable
Visibility
0 km
Low
0 km
Low
12 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
Pressure
1021 hPa
High
1020 hPa
High
1021 hPa
High
1021 hPa
High
1021 hPa
High
1020 hPa
High
1020 hPa
High
1019 hPa
High
1018 hPa
High
Clouds
100%
100%
86%
36%
0%
0%
0%
0%
17%
Dew point
12°
13°
12°
13°
14°
14°
15°
15°
15°
UV Index
0
0
0
1
2
4
6
7
7
Air quality
48
Good
49
Good
49
Good
50
Moderate
50
Moderate
51
Moderate
51
Moderate
43
Good
47
Good
Pollen index
Tree
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Weed
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Grass
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Pollutants
Low risk
High risk
PM10
6.2 μg/m3
6.8 μg/m3
6.7 μg/m3
8.6 μg/m3
8.6 μg/m3
8.6 μg/m3
8.6 μg/m3
5.4 μg/m3
6.1 μg/m3
PM25
8.6 μg/m3
8.7 μg/m3
8.8 μg/m3
8.9 μg/m3
9 μg/m3
9.2 μg/m3
9.3 μg/m3
5.1 μg/m3
5.8 μg/m3
NO2
5.6 ppb
4.6 ppb
3.8 ppb
2.8 ppb
2.1 ppb
1.3 ppb
0.6 ppb
0.7 ppb
0.6 ppb
SO2
0.3 ppb
0.3 ppb
0.3 ppb
0.2 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
CO
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
O3
21.2 ppb
22.7 ppb
24.7 ppb
27 ppb
29.4 ppb
31.7 ppb
33.7 ppb
46.1 ppb
50.2 ppb