Hourly Weather in Merion, Pennsylvania, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
9 km/h
Light
13 km/h
Light
13 km/h
Light
12 km/h
Light
10 km/h
Light
10 km/h
Light
10 km/h
Light
11 km/h
Light
11 km/h
Light
Humidity
52%
Comfortable
46%
Comfortable
49%
Comfortable
49%
Comfortable
45%
Comfortable
44%
Dry
39%
Dry
39%
Dry
41%
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
1021 hPa
High
1020 hPa
High
1019 hPa
High
1018 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
1016 hPa
Normal
Clouds
1%
0%
0%
3%
4%
7%
3%
2%
6%
Dew point
13°
12°
13°
14°
14°
14°
12°
12°
13°
UV Index
4
6
7
8
7
6
4
2
1
Air quality
43
Good
43
Good
43
Good
42
Good
42
Good
42
Good
57
Moderate
57
Moderate
56
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
14 μg/m3
14 μg/m3
14 μg/m3
14 μg/m3
14 μg/m3
14 μg/m3
15.5 μg/m3
15.4 μg/m3
14.7 μg/m3
PM25
7.6 μg/m3
7.6 μg/m3
7.6 μg/m3
7.5 μg/m3
7.5 μg/m3
7.5 μg/m3
12.3 μg/m3
12.2 μg/m3
11.6 μg/m3
NO2
4.5 ppb
2.3 ppb
1.9 ppb
1.5 ppb
1 ppb
1.1 ppb
1.1 ppb
1.2 ppb
2.4 ppb
SO2
0.6 ppb
0.7 ppb
0.6 ppb
0.6 ppb
0.5 ppb
0.5 ppb
0.5 ppb
0.4 ppb
0.4 ppb
CO
0.2 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
29.6 ppb
32 ppb
34.8 ppb
37.7 ppb
40.5 ppb
42.9 ppb
60.9 ppb
60.5 ppb
57.8 ppb