Hourly Weather in Alpena, South Dakota, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
7 km/h
Calm
7 km/h
Calm
7 km/h
Calm
9 km/h
Light
11 km/h
Light
12 km/h
Light
14 km/h
Light
13 km/h
Light
14 km/h
Light
Humidity
76%
Extremely humid
61%
Humid
52%
Comfortable
48%
Comfortable
42%
Dry
39%
Dry
37%
Dry
37%
Dry
38%
Dry
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
1009 hPa
Low
1007 hPa
Low
1008 hPa
Low
1007 hPa
Low
1007 hPa
Low
1006 hPa
Low
1006 hPa
Low
1005 hPa
Low
1005 hPa
Low
Clouds
0%
3%
1%
1%
0%
0%
2%
42%
50%
Dew point
23°
22°
21°
21°
21°
21°
21°
21°
22°
UV Index
4
6
8
9
9
8
6
4
2
Air quality
56
Moderate
56
Moderate
56
Moderate
57
Moderate
57
Moderate
57
Moderate
58
Moderate
58
Moderate
53
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
11.1 μg/m3
11.4 μg/m3
21.6 μg/m3
21.6 μg/m3
21.6 μg/m3
21.6 μg/m3
21.6 μg/m3
21.6 μg/m3
10.9 μg/m3
PM25
11.7 μg/m3
11.8 μg/m3
11.9 μg/m3
12.1 μg/m3
12.2 μg/m3
12.4 μg/m3
12.6 μg/m3
12.7 μg/m3
10.1 μg/m3
NO2
1.6 ppb
1.3 ppb
0.9 ppb
0.6 ppb
0.6 ppb
0.5 ppb
0.4 ppb
0.6 ppb
0.8 ppb
SO2
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.2 ppb
0.2 ppb
0.2 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
24.8 ppb
25.5 ppb
26.8 ppb
28.6 ppb
30.8 ppb
33 ppb
35.1 ppb
36.9 ppb
44.6 ppb