Hourly Weather in Saint Charles, Illinois, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
4 mph
Calm
4 mph
Calm
5 mph
Light
6 mph
Light
6 mph
Light
7 mph
Light
8 mph
Light
8 mph
Light
5 mph
Calm
Humidity
61%
Humid
57%
Comfortable
53%
Comfortable
51%
Comfortable
49%
Comfortable
49%
Comfortable
49%
Comfortable
51%
Comfortable
63%
Humid
Visibility
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
Pressure
1021 hPa
High
1021 hPa
High
1020 hPa
High
1020 hPa
High
1020 hPa
High
1019 hPa
High
1019 hPa
High
1018 hPa
High
1018 hPa
High
Clouds
6%
6%
0%
3%
0%
1%
0%
0%
88%
Dew point
73°
72°
72°
71°
70°
70°
69°
70°
73°
UV Index
8
9
9
8
6
4
2
1
0
Air quality
59
Moderate
62
Moderate
65
Moderate
65
Moderate
64
Moderate
63
Moderate
61
Moderate
58
Moderate
55
Moderate
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
0.40 μg/ft3
0.39 μg/ft3
0.39 μg/ft3
0.37 μg/ft3
0.36 μg/ft3
0.35 μg/ft3
0.34 μg/ft3
0.34 μg/ft3
0.35 μg/ft3
PM25
0.36 μg/ft3
0.35 μg/ft3
0.35 μg/ft3
0.33 μg/ft3
0.32 μg/ft3
0.30 μg/ft3
0.29 μg/ft3
0.29 μg/ft3
0.31 μg/ft3
NO2
1.5 ppb
1.1 ppb
0.8 ppb
0.8 ppb
0.9 ppb
0.9 ppb
2.2 ppb
3.6 ppb
4.9 ppb
SO2
3.6 ppb
3.4 ppb
3.2 ppb
2.7 ppb
2.2 ppb
1.7 ppb
1.6 ppb
1.5 ppb
1.4 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
66.4 ppb
70.9 ppb
74.2 ppb
74.6 ppb
73.7 ppb
72 ppb
68.6 ppb
64.5 ppb
61 ppb