Hourly Weather in Petroleum County, Montana, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
7 mph
Light
8 mph
Light
7 mph
Light
9 mph
Light
10 mph
Breezy
13 mph
Breezy
15 mph
Breezy
16 mph
Breezy
16 mph
Breezy
Humidity
88%
Extremely humid
83%
Extremely humid
81%
Extremely humid
81%
Extremely humid
82%
Extremely humid
82%
Extremely humid
81%
Extremely humid
79%
Extremely humid
80%
Extremely humid
Visibility
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
Pressure
1009 hPa
Normal
1011 hPa
Normal
1011 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
Clouds
100%
100%
100%
100%
100%
89%
100%
100%
100%
Dew point
25°
24°
23°
24°
25°
27°
28°
28°
28°
UV Index
0
0
0
0
0
0
0
0
0
Air quality
18
Good
19
Good
20
Good
21
Good
22
Good
23
Good
24
Good
33
Good
33
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
0.15 μg/ft3
0.15 μg/ft3
0.15 μg/ft3
0.15 μg/ft3
0.15 μg/ft3
0.15 μg/ft3
0.15 μg/ft3
0.06 μg/ft3
0.05 μg/ft3
PM25
0.02 μg/ft3
0.03 μg/ft3
0.05 μg/ft3
0.07 μg/ft3
0.09 μg/ft3
0.11 μg/ft3
0.13 μg/ft3
0.21 μg/ft3
0.17 μg/ft3
NO2
1.56 ppb
1.56 ppb
1.46 ppb
1.23 ppb
0.93 ppb
0.66 ppb
0.63 ppb
0.5 ppb
0.5 ppb
SO2
0.13 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
N/A
N/A
CO
0.2 ppb
0.2 ppb
0.13 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
O3
19.8 ppb
20.5 ppb
21.4 ppb
22.5 ppb
23.7 ppb
24.8 ppb
25.8 ppb
32.9 ppb
33 ppb