Hourly Weather in Koster, Illinois, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
12 km/h
Light
6 km/h
Calm
7 km/h
Calm
5 km/h
Calm
4 km/h
Calm
8 km/h
Light
8 km/h
Calm
9 km/h
Light
8 km/h
Light
Humidity
55%
Comfortable
46%
Comfortable
45%
Comfortable
45%
Comfortable
48%
Comfortable
53%
Comfortable
58%
Comfortable
61%
Humid
67%
Humid
Visibility
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
Pressure
1019 hPa
High
1018 hPa
Normal
1018 hPa
Normal
1018 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
1018 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
Clouds
18%
4%
0%
0%
0%
0%
0%
1%
3%
Dew point
15°
11°
11°
11°
12°
12°
12°
12°
13°
UV Index
2
2
1
0
0
0
0
0
0
Air quality
42
Good
42
Good
42
Good
41
Good
41
Good
40
Good
40
Good
40
Good
51
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
15.1 μg/m3
15.1 μg/m3
15.1 μg/m3
15.1 μg/m3
15.1 μg/m3
15.1 μg/m3
15.1 μg/m3
15.1 μg/m3
9.9 μg/m3
PM25
6.1 μg/m3
6 μg/m3
5.9 μg/m3
5.8 μg/m3
5.6 μg/m3
5.4 μg/m3
5.3 μg/m3
5.1 μg/m3
9 μg/m3
NO2
0.8 ppb
1.3 ppb
1.9 ppb
2.4 ppb
4.8 ppb
7.3 ppb
9.6 ppb
10.9 ppb
10.1 ppb
SO2
0.4 ppb
0.4 ppb
0.4 ppb
0.5 ppb
0.6 ppb
0.7 ppb
0.8 ppb
0.8 ppb
1 ppb
CO
0.1 ppb
0.1 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
O3
45.3 ppb
45.1 ppb
44.8 ppb
44.4 ppb
44 ppb
43.5 ppb
43 ppb
42.6 ppb
24.8 ppb