Williamsburg County, South Carolina, United States

Last updated: 12:44 PM CDT  ·  Refresh
33°C
Feels like 40°
Mostly Clear
▲ 36°  /  ▼ 22°
Wind
4 mph S
Humidity
64%
Dew Point
24°
Pressure
29.93 inHg
Visibility
10 mi
UV Index
9.4
Cloud Cover
15%
Sunrise
6:45 AM
Sunset
7:58 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Williamsburg County is currently mostly clear at 33°C. Precipitation is likely — peak probability 71% around 6 PM. Atmospheric instability is elevated (CAPE up to 2589 J/kg) — isolated convective development possible. Sunrise: 6:45AM · Sunset: 7:58PM.

Alerts

No active alerts for this location.
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
41%
2 PM
33°
58%
3 PM
33°
45%
4 PM
34°
48%
5 PM
34°
66%
6 PM
32°
70%
7 PM
29°
65%
8 PM
28°
70%
9 PM
26°
66%
10 PM
26°
60%
11 PM
24°
49%
12 AM
24°
52%
1 AM
23°
52%
2 AM
23°
48%
3 AM
23°
47%
4 AM
23°
41%
5 AM
22°
36%
6 AM
22°
36%
7 AM
22°
42%
8 AM
23°
42%
9 AM
26°
42%
10 AM
27°
43%
11 AM
27°
43%
12 PM
28°
43%
7-Day Forecast
Today
36° 22°
Partly Cloudy with a 65% chance of rain.
Sat
33° 22°
Rain, 52% chance.
Sun
33° 21°
Mostly Clear.
Mon
34° 21°
Mostly Clear with a 32% chance of rain.
Tue
33° 22°
Rain, 64% chance.
Wed
32° 21°
Rain, 64% chance.
Thu
32° 21°
Heavy Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Mostly Clear 41% 4 mph S 64%
2 PM 33° Mostly Clear 58% 5 mph S 62%
3 PM 33° Mostly Clear 45% 6 mph S 57%
4 PM 34° Mostly Clear 48% 8 mph S 52%
5 PM 34° Partly Cloudy 66% 8 mph S 57%
6 PM 32° Partly Cloudy 70% 7 mph SSE 66%
7 PM 29° Partly Cloudy 65% 9 mph SE 76%
8 PM 28° Mostly Cloudy 70% 6 mph ESE 82%
9 PM 26° Overcast 66% 6 mph SE 85%
10 PM 26° Overcast 60% 5 mph E 88%
11 PM 24° Overcast 49% 4 mph ENE 90%
12 AM 24° Overcast 52% 3 mph NE 91%
1 AM 23° Rain 52% 4 mph N 93%
2 AM 23° Rain 48% 3 mph NNE 94%
3 AM 23° Drizzle 47% 3 mph ESE 95%
4 AM 23° Mostly Cloudy 41% 4 mph ESE 96%
5 AM 22° Mostly Cloudy 36% 3 mph ESE 95%
6 AM 22° Mostly Cloudy 36% 2 mph ESE 94%
7 AM 22° Mostly Cloudy 42% 3 mph SE 94%
8 AM 23° Partly Cloudy 42% 3 mph SW 90%
9 AM 26° Partly Cloudy 42% 4 mph SW 84%
10 AM 27° Rain 43% 5 mph SW 79%
11 AM 27° Rain 43% 6 mph SW 76%
12 PM 28° Rain 43% 5 mph SW 73%
15-Day Forecast
Today
8/21
Partly Cloudy
65%
22°
36°
Sat
8/22
Rain
52%
22°
33°
Sun
8/23
Mostly Clear
12%
21°
33°
Mon
8/24
Mostly Clear
32%
21°
34°
Tue
8/25
Rain
64%
22°
33°
Wed
8/26
Rain
64%
21°
32°
Thu
8/27
Heavy Rain
82%
21°
32°
Fri
8/28
Rain
63%
20°
33°
Sat
8/29
Rain
66%
22°
34°
Sun
8/30
Drizzle
51%
22°
34°
Mon
8/31
Drizzle
60%
24°
34°
Tue
9/1
Drizzle
60%
23°
34°
Wed
9/2
Clear
60%
23°
33°
Thu
9/3
Drizzle
60%
23°
33°
Fri
9/4
Drizzle
60%
22°
32°
52
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
52 AQI 9.6 µg/m³
O3
Ground-level ozone
44 AQI 47 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 52 Moderate 44 52
Sun 36 Good 35 36
Mon 44 Good 40 44
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

Model sounding data is unavailable for this location.