Daily Weather in Koster, Illinois, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
31 km/h
Breezy
45 km/h
Strong
21 km/h
Breezy
14 km/h
Light
7 km/h
Calm
12 km/h
Light
11 km/h
Light
15 km/h
Light
11 km/h
Light
Humidity
96%
Extremely humid
95%
Extremely humid
98%
Extremely humid
91%
Extremely humid
98%
Extremely humid
98%
Extremely humid
96%
Extremely humid
93%
Extremely humid
93%
Extremely 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
1014 hPa
Normal
1013 hPa
Normal
1013 hPa
Normal
1015 hPa
Normal
1017 hPa
Normal
1016 hPa
Normal
1014 hPa
Normal
1014 hPa
Normal
1016 hPa
Normal
Clouds
100%
100%
100%
36%
63%
100%
100%
9%
8%
Dew point
23°
24°
23°
18°
23°
22°
22°
21°
21°
UV Index
6
7
7
8
8
Air quality
68
Moderate
49
Good
52
Moderate
46
Good
57
Moderate
Pollen index
Tree
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
Grass
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Pollutants
Low risk
High risk
PM10
19.9 μg/m3
6 μg/m3
9.8 μg/m3
8.4 μg/m3
10.5 μg/m3
PM25
18.3 μg/m3
5.3 μg/m3
9.5 μg/m3
8.2 μg/m3
10.2 μg/m3
NO2
8.8 ppb
6.9 ppb
4.8 ppb
17.9 ppb
14.6 ppb
SO2
0.8 ppb
1.3 ppb
1 ppb
1.8 ppb
2.8 ppb
CO
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
O3
48.2 ppb
53.1 ppb
49.2 ppb
48.7 ppb
68.4 ppb