Daily Weather in Keystone, South Dakota, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
19 km/h
Breezy
24 km/h
Breezy
18 km/h
Breezy
19 km/h
Breezy
13 km/h
Light
13 km/h
Light
15 km/h
Light
14 km/h
Light
7 km/h
Calm
Humidity
88%
Extremely humid
46%
Comfortable
48%
Comfortable
66%
Humid
75%
Extremely humid
85%
Extremely humid
86%
Extremely humid
98%
Extremely humid
98%
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
1012 hPa
Normal
1007 hPa
Low
1012 hPa
Normal
1013 hPa
Normal
1014 hPa
Normal
1013 hPa
Normal
1021 hPa
High
1021 hPa
High
1021 hPa
High
Clouds
9%
100%
63%
74%
99%
82%
83%
99%
99%
Dew point
17°
11°
14°
18°
16°
21°
16°
17°
18°
UV Index
10
10
10
9
9
Air quality
60
Moderate
48
Good
49
Good
46
Good
48
Good
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
3 / 5
3 / 5
3 / 5
3 / 5
3 / 5
0 / 5
Pollutants
Low risk
High risk
PM10
12.2 μg/m3
9.1 μg/m3
5.8 μg/m3
5.5 μg/m3
4.9 μg/m3
PM25
13.8 μg/m3
8.5 μg/m3
5.4 μg/m3
4.9 μg/m3
3.8 μg/m3
NO2
3 ppb
2.4 ppb
1.9 ppb
2.1 ppb
2.2 ppb
SO2
0.1 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.1 ppb
CO
0.2 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
O3
49.2 ppb
49 ppb
53.1 ppb
49.6 ppb
53.6 ppb