Hourly Weather in Halfmoon Bay, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
19 km/h
Breezy
23 km/h
Breezy
23 km/h
Breezy
25 km/h
Breezy
27 km/h
Breezy
28 km/h
Breezy
26 km/h
Breezy
27 km/h
Breezy
27 km/h
Breezy
Humidity
80%
Extremely humid
81%
Extremely humid
84%
Extremely humid
82%
Extremely humid
80%
Extremely humid
84%
Extremely humid
83%
Extremely humid
82%
Extremely humid
84%
Extremely humid
Visibility
15 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
1012 hPa
Normal
1013 hPa
Normal
1013 hPa
Normal
1013 hPa
Normal
1013 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
1013 hPa
Normal
1012 hPa
Normal
Clouds
0%
0%
0%
0%
0%
0%
0%
0%
0%
Dew point
26°
27°
27°
27°
26°
26°
26°
26°
26°
UV Index
0
0
0
0
0
0
0
0
0
Air quality
46
Good
46
Good
45
Good
45
Good
44
Good
44
Good
43
Good
43
Good
36
Good
Pollen index
Tree
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Weed
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
Grass
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
Pollutants
Low risk
High risk
PM10
10.3 μg/m3
10.3 μg/m3
10.2 μg/m3
10.1 μg/m3
10 μg/m3
9.8 μg/m3
9.6 μg/m3
36.7 μg/m3
9.9 μg/m3
PM25
8.2 μg/m3
8.2 μg/m3
8.1 μg/m3
8 μg/m3
7.9 μg/m3
7.8 μg/m3
7.7 μg/m3
7.6 μg/m3
6.4 μg/m3
NO2
0.5 ppb
0.6 ppb
0.6 ppb
0.7 ppb
0.7 ppb
0.7 ppb
0.9 ppb
1 ppb
0.5 ppb
SO2
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.2 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
34.5 ppb
34.6 ppb
34.8 ppb
35 ppb
35.3 ppb
35.6 ppb
35.9 ppb
36.1 ppb
30.4 ppb