Hourly Weather in Saint John Harbor, Alaska, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
2 mph
Calm
3 mph
Calm
3 mph
Calm
3 mph
Calm
3 mph
Calm
3 mph
Calm
3 mph
Calm
2 mph
Calm
3 mph
Calm
Humidity
88%
Extremely humid
87%
Extremely humid
86%
Extremely humid
87%
Extremely humid
87%
Extremely humid
86%
Extremely humid
86%
Extremely humid
88%
Extremely humid
89%
Extremely humid
Visibility
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
8 mi
Good
6 mi
Good
5 mi
Fair
4 mi
Fair
3 mi
Low
Pressure
1015 hPa
Normal
1016 hPa
Normal
1016 hPa
Normal
1016 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
1018 hPa
Normal
1018 hPa
High
1018 hPa
High
Clouds
100%
100%
100%
100%
100%
100%
100%
100%
99%
Dew point
41°
40°
40°
40°
40°
40°
39°
40°
40°
UV Index
0
0
0
0
0
0
0
0
0
Air quality
37
Good
36
Good
36
Good
36
Good
35
Good
35
Good
35
Good
34
Good
34
Good
Pollen index
Tree
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 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
0.04 μg/ft3
0.04 μg/ft3
0.04 μg/ft3
0.04 μg/ft3
0.04 μg/ft3
0.04 μg/ft3
0.04 μg/ft3
0.03 μg/ft3
0.03 μg/ft3
PM25
0.02 μg/ft3
0.02 μg/ft3
0.02 μg/ft3
0.02 μg/ft3
0.02 μg/ft3
0.02 μg/ft3
0.02 μg/ft3
0.02 μg/ft3
0.02 μg/ft3
NO2
0.32 ppb
0.33 ppb
0.34 ppb
0.34 ppb
0.3 ppb
0.25 ppb
0.2 ppb
0.18 ppb
0.15 ppb
SO2
0.06 ppb
0.06 ppb
0.06 ppb
0.06 ppb
0.06 ppb
0.05 ppb
0.05 ppb
0.05 ppb
0.04 ppb
CO
0.11 ppb
0.11 ppb
0.11 ppb
0.11 ppb
0.11 ppb
0.11 ppb
0.11 ppb
0.11 ppb
0.11 ppb
O3
38.34 ppb
38.01 ppb
37.68 ppb
37.35 ppb
37.02 ppb
36.68 ppb
36.35 ppb
36.03 ppb
35.71 ppb