Hourly Weather in Alta, Montana, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
16 mph
Breezy
12 mph
Breezy
11 mph
Breezy
11 mph
Breezy
12 mph
Breezy
13 mph
Breezy
13 mph
Breezy
14 mph
Breezy
14 mph
Breezy
Humidity
80%
Extremely humid
81%
Extremely humid
83%
Extremely humid
81%
Extremely humid
77%
Extremely humid
71%
Extremely humid
64%
Humid
57%
Comfortable
51%
Comfortable
Visibility
9 mi
Good
9 mi
Good
9 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
Pressure
1024 hPa
High
1025 hPa
High
1026 hPa
Very high
1026 hPa
Very high
1026 hPa
Very high
1026 hPa
Very high
1026 hPa
Very high
1026 hPa
Very high
1026 hPa
Very high
Clouds
92%
94%
92%
8%
12%
3%
3%
30%
55%
Dew point
26°
26°
26°
27°
27°
27°
27°
27°
26°
UV Index
0
0
0
0
0
1
2
3
3
Air quality
40
Good
40
Good
40
Good
39
Good
39
Good
39
Good
39
Good
39
Good
39
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
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Pollutants
Low risk
High risk
PM10
0.05 μg/ft3
0.06 μg/ft3
0.07 μg/ft3
0.06 μg/ft3
0.06 μg/ft3
0.06 μg/ft3
0.05 μg/ft3
0.05 μg/ft3
0.06 μg/ft3
PM25
0.03 μg/ft3
0.04 μg/ft3
0.05 μg/ft3
0.04 μg/ft3
0.04 μg/ft3
0.04 μg/ft3
0.03 μg/ft3
0.03 μg/ft3
0.04 μg/ft3
NO2
0.34 ppb
0.33 ppb
0.32 ppb
0.31 ppb
0.27 ppb
0.23 ppb
0.19 ppb
0.17 ppb
0.15 ppb
SO2
0.2 ppb
0.19 ppb
0.18 ppb
0.17 ppb
0.17 ppb
0.17 ppb
0.16 ppb
0.17 ppb
0.17 ppb
CO
0.13 ppb
0.13 ppb
0.13 ppb
0.13 ppb
0.13 ppb
0.13 ppb
0.13 ppb
0.13 ppb
0.13 ppb
O3
42.1 ppb
41.6 ppb
41 ppb
40.5 ppb
41 ppb
41.4 ppb
41.9 ppb
43.8 ppb
45.7 ppb