Hourly Weather in Yellowstone County, Montana, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
6 km/h
Calm
5 km/h
Calm
6 km/h
Calm
3 km/h
Calm
3 km/h
Calm
5 km/h
Calm
27 km/h
Breezy
5 km/h
Calm
18 km/h
Breezy
Humidity
18%
Extremely dry
18%
Extremely dry
21%
Very dry
18%
Extremely dry
27%
Very dry
24%
Very dry
30%
Dry
33%
Dry
41%
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
1005 hPa
Low
1004 hPa
Low
1005 hPa
Low
1003 hPa
Very low
1003 hPa
Very low
1003 hPa
Very low
1007 hPa
Low
1007 hPa
Low
1007 hPa
Low
Clouds
100%
100%
71%
0%
1%
67%
100%
100%
13%
Dew point
7°
7°
9°
8°
13°
11°
11°
11°
13°
UV Index
4
3
3
1
0
0
0
0
0
Air quality
73
Moderate
75
Moderate
78
Moderate
81
Moderate
84
Moderate
87
Moderate
89
Moderate
59
Moderate
57
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
4 / 5
4 / 5
4 / 5
4 / 5
4 / 5
3 / 5
3 / 5
4 / 5
3 / 5
Pollutants
Low risk
High risk
PM10
24.1 μg/m3
23.1 μg/m3
8.6 μg/m3
8.6 μg/m3
8.6 μg/m3
8.6 μg/m3
8.6 μg/m3
14.9 μg/m3
13.9 μg/m3
PM25
20.7 μg/m3
21.7 μg/m3
23.1 μg/m3
24.7 μg/m3
26.4 μg/m3
28 μg/m3
29.4 μg/m3
13.2 μg/m3
12.3 μg/m3
NO2
0.4 ppb
0.4 ppb
0.4 ppb
0.4 ppb
0.8 ppb
1.1 ppb
1.4 ppb
1.9 ppb
2.3 ppb
SO2
0.4 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 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
0.1 ppb
O3
45.5 ppb
45.8 ppb
46.3 ppb
46.9 ppb
47.5 ppb
48 ppb
48.5 ppb
53.4 ppb
47.8 ppb