Hourly Weather in Helena, California, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
6 km/h
Calm
8 km/h
Calm
12 km/h
Light
14 km/h
Light
15 km/h
Light
16 km/h
Light
16 km/h
Light
15 km/h
Light
14 km/h
Light
Humidity
31%
Dry
27%
Very dry
23%
Very dry
21%
Very dry
21%
Very dry
21%
Very dry
21%
Very dry
22%
Very dry
23%
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
1013 hPa
Normal
1012 hPa
Normal
1013 hPa
Normal
1013 hPa
Normal
1013 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
Clouds
0%
0%
0%
0%
0%
0%
0%
0%
0%
Dew point
3°
3°
2°
2°
2°
2°
3°
3°
3°
UV Index
5
7
9
10
10
8
6
3
2
Air quality
27
Good
28
Good
29
Good
29
Good
30
Good
31
Good
32
Good
42
Good
41
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
15.1 μg/m3
15.1 μg/m3
15.1 μg/m3
15.1 μg/m3
15.1 μg/m3
15.1 μg/m3
15.1 μg/m3
4.8 μg/m3
5 μg/m3
PM25
4.8 μg/m3
4.7 μg/m3
4.5 μg/m3
4.4 μg/m3
4.2 μg/m3
4.1 μg/m3
3.9 μg/m3
3.7 μg/m3
3.8 μg/m3
NO2
0.5 ppb
0.2 ppb
0.2 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.2 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
29.4 ppb
30 ppb
30.8 ppb
31.7 ppb
32.7 ppb
33.6 ppb
34.4 ppb
45 ppb
44.6 ppb