Hourly Weather in Castaic, California, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
9 km/h
Light
15 km/h
Light
18 km/h
Breezy
23 km/h
Breezy
23 km/h
Breezy
23 km/h
Breezy
23 km/h
Breezy
20 km/h
Breezy
17 km/h
Breezy
Humidity
27%
Very dry
31%
Dry
29%
Very dry
29%
Very dry
31%
Dry
32%
Dry
33%
Dry
35%
Dry
38%
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
1011 hPa
Normal
1011 hPa
Normal
1011 hPa
Normal
1011 hPa
Normal
1010 hPa
Normal
1009 hPa
Normal
1009 hPa
Normal
1010 hPa
Normal
1010 hPa
Normal
Clouds
0%
4%
0%
1%
3%
0%
0%
0%
0%
Dew point
12°
15°
14°
15°
15°
15°
15°
15°
15°
UV Index
8
10
11
10
8
5
3
1
0
Air quality
53
Moderate
53
Moderate
54
Moderate
54
Moderate
55
Moderate
56
Moderate
57
Moderate
57
Moderate
64
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
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Pollutants
Low risk
High risk
PM10
32.4 μg/m3
32.4 μg/m3
32.4 μg/m3
32.4 μg/m3
32.4 μg/m3
32.4 μg/m3
32.4 μg/m3
32.4 μg/m3
22.6 μg/m3
PM25
10.2 μg/m3
10.3 μg/m3
10.6 μg/m3
10.9 μg/m3
11.3 μg/m3
11.8 μg/m3
12.2 μg/m3
12.5 μg/m3
15.8 μg/m3
NO2
2.3 ppb
1.9 ppb
1.5 ppb
1.2 ppb
1.1 ppb
1 ppb
0.9 ppb
1.4 ppb
1.2 ppb
SO2
0.9 ppb
0.9 ppb
1 ppb
1 ppb
1 ppb
1 ppb
0.9 ppb
0.9 ppb
0.7 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
50.7 ppb
51.1 ppb
51.9 ppb
53.1 ppb
54.4 ppb
55.8 ppb
57.1 ppb
58.3 ppb
61.1 ppb