Hourly Weather in Johnston, South Carolina, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
19 km/h
Breezy
18 km/h
Breezy
18 km/h
Breezy
19 km/h
Breezy
18 km/h
Breezy
19 km/h
Breezy
13 km/h
Light
9 km/h
Light
11 km/h
Light
Humidity
50%
Comfortable
44%
Dry
40%
Dry
35%
Dry
34%
Dry
28%
Very dry
36%
Dry
41%
Dry
44%
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
1008 hPa
Low
1008 hPa
Low
1006 hPa
Low
1006 hPa
Low
1006 hPa
Low
1005 hPa
Low
1005 hPa
Low
1005 hPa
Low
1005 hPa
Low
Clouds
57%
0%
0%
0%
0%
0%
0%
1%
0%
Dew point
22°
20°
19°
18°
18°
15°
18°
18°
18°
UV Index
7
7
5
3
1
0
0
0
0
Air quality
62
Moderate
62
Moderate
62
Moderate
61
Moderate
61
Moderate
61
Moderate
61
Moderate
60
Moderate
58
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
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
Pollutants
Low risk
High risk
PM10
22.6 μg/m3
22.6 μg/m3
22.6 μg/m3
22.6 μg/m3
22.6 μg/m3
22.6 μg/m3
22.6 μg/m3
22.6 μg/m3
13.1 μg/m3
PM25
14.9 μg/m3
14.9 μg/m3
14.8 μg/m3
14.6 μg/m3
14.5 μg/m3
14.3 μg/m3
14.1 μg/m3
14 μg/m3
12.6 μg/m3
NO2
0.6 ppb
0.6 ppb
0.6 ppb
0.5 ppb
0.9 ppb
1.3 ppb
1.7 ppb
1.8 ppb
1.3 ppb
SO2
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.4 ppb
0.4 ppb
0.4 ppb
0.4 ppb
CO
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
O3
42.1 ppb
42.4 ppb
42.9 ppb
43.8 ppb
44.7 ppb
45.7 ppb
46.6 ppb
47.4 ppb
55.5 ppb