Hourly Weather in Alcatraz, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
25 km/h
Breezy
16 km/h
Light
10 km/h
Light
14 km/h
Light
17 km/h
Breezy
17 km/h
Breezy
18 km/h
Breezy
19 km/h
Breezy
19 km/h
Breezy
Humidity
92%
Extremely humid
91%
Extremely humid
91%
Extremely humid
92%
Extremely humid
90%
Extremely humid
90%
Extremely humid
91%
Extremely humid
90%
Extremely humid
88%
Extremely humid
Visibility
13 km
Good
13 km
Good
13 km
Good
13 km
Good
14 km
Good
14 km
Good
14 km
Good
14 km
Good
14 km
Good
Pressure
1014 hPa
Normal
1014 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1014 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1016 hPa
Normal
Clouds
12%
10%
11%
13%
9%
8%
16%
8%
10%
Dew point
14°
14°
13°
13°
13°
13°
13°
13°
13°
UV Index
0
0
0
0
0
0
0
0
0
Air quality
27
Good
29
Good
31
Good
33
Good
35
Good
52
Moderate
52
Moderate
52
Moderate
53
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
18.3 μg/m3
18.3 μg/m3
18.3 μg/m3
18.3 μg/m3
18.3 μg/m3
14 μg/m3
14.3 μg/m3
14.6 μg/m3
15.1 μg/m3
PM25
4.8 μg/m3
5.2 μg/m3
5.6 μg/m3
5.9 μg/m3
6.3 μg/m3
9.4 μg/m3
9.6 μg/m3
9.8 μg/m3
10 μg/m3
NO2
3.3 ppb
3.2 ppb
3.1 ppb
3 ppb
2.8 ppb
2.9 ppb
2.7 ppb
2.5 ppb
2.4 ppb
SO2
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 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
20.9 ppb
21.8 ppb
22.7 ppb
23.5 ppb
24.3 ppb
25.8 ppb
25.9 ppb
26.3 ppb
26.8 ppb