Hourly Weather in Merrimack, New Hampshire, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
5 mph
Light
5 mph
Light
5 mph
Light
6 mph
Light
5 mph
Light
5 mph
Light
6 mph
Light
7 mph
Light
7 mph
Light
Humidity
94%
Extremely humid
94%
Extremely humid
93%
Extremely humid
93%
Extremely humid
93%
Extremely humid
93%
Extremely humid
91%
Extremely humid
91%
Extremely humid
89%
Extremely humid
Visibility
8 mi
Good
8 mi
Good
8 mi
Good
8 mi
Good
8 mi
Good
8 mi
Good
8 mi
Good
8 mi
Good
9 mi
Good
Pressure
1018 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
1018 hPa
Normal
1018 hPa
Normal
Clouds
100%
100%
100%
100%
100%
100%
100%
100%
100%
Dew point
72°
72°
72°
71°
71°
71°
71°
71°
71°
UV Index
0
0
0
0
0
0
0
1
2
Air quality
30
Good
35
Good
33
Good
33
Good
32
Good
30
Good
29
Good
30
Good
38
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
0.31 μg/ft3
0.21 μg/ft3
0.19 μg/ft3
0.18 μg/ft3
0.17 μg/ft3
0.16 μg/ft3
0.15 μg/ft3
0.16 μg/ft3
0.20 μg/ft3
PM25
0.14 μg/ft3
0.18 μg/ft3
0.17 μg/ft3
0.17 μg/ft3
0.16 μg/ft3
0.15 μg/ft3
0.14 μg/ft3
0.15 μg/ft3
0.19 μg/ft3
NO2
6 ppb
6 ppb
5.9 ppb
5.7 ppb
5.6 ppb
5.9 ppb
6.1 ppb
6.4 ppb
5.5 ppb
SO2
0.7 ppb
0.9 ppb
0.9 ppb
0.9 ppb
1 ppb
1.1 ppb
1.2 ppb
1.3 ppb
1.1 ppb
CO
0.1 ppb
0.1 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
O3
32.7 ppb
29.1 ppb
28.8 ppb
28.8 ppb
28.9 ppb
30 ppb
31.2 ppb
32.3 ppb
38.7 ppb