Hourly Weather in Alta, Montana, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
5 km/h
Calm
1 km/h
Calm
4 km/h
Calm
6 km/h
Calm
1 km/h
Calm
10 km/h
Light
5 km/h
Calm
6 km/h
Calm
11 km/h
Light
Humidity
37%
Dry
36%
Dry
34%
Dry
25%
Very dry
26%
Very dry
21%
Very dry
19%
Extremely dry
20%
Very dry
25%
Very 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
1005 hPa
Low
1005 hPa
Low
1005 hPa
Low
1005 hPa
Low
1005 hPa
Low
1005 hPa
Low
1005 hPa
Low
1005 hPa
Low
Clouds
100%
77%
18%
24%
80%
100%
26%
5%
83%
Dew point
10°
10°
8°
3°
3°
0°
-1°
-1°
2°
UV Index
0
0
0
0
0
0
0
0
0
Air quality
49
Good
50
Moderate
52
Moderate
53
Moderate
54
Moderate
55
Moderate
55
Moderate
32
Good
32
Good
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
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
Pollutants
Low risk
High risk
PM10
24.8 μg/m3
24.8 μg/m3
24.8 μg/m3
24.8 μg/m3
24.8 μg/m3
24.8 μg/m3
24.8 μg/m3
7.1 μg/m3
7.1 μg/m3
PM25
8.7 μg/m3
9 μg/m3
9.5 μg/m3
10 μg/m3
10.5 μg/m3
11 μg/m3
11.4 μg/m3
5.8 μg/m3
5.7 μg/m3
NO2
1.8 ppb
2.5 ppb
3.3 ppb
3.8 ppb
4.4 ppb
5 ppb
5.4 ppb
6.1 ppb
6.5 ppb
SO2
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
CO
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
O3
47.4 ppb
47.3 ppb
47.2 ppb
47.1 ppb
46.9 ppb
46.8 ppb
46.6 ppb
24.6 ppb
22.1 ppb