Charleston, South Carolina

Last updated: 6:23 PM CDT  ·  Refresh
32°C
Feels like 38°
Mostly Clear
▲ 33°  /  ▼ 26°
Wind
6 mph S
Humidity
68%
Dew Point
25°
Pressure
29.73 inHg
Visibility
10 mi
UV Index
2.7
Cloud Cover
23%
Sunrise
6:31 AM
Sunset
8:20 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Charleston is currently mostly clear at 32°C. Precipitation is likely — peak probability 66% around 8 PM. Atmospheric instability is elevated (CAPE up to 2727 J/kg) — isolated convective development possible. Sunrise: 6:31AM · Sunset: 8:20PM.

Alerts

No active alerts for this location.
58 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
37%
8 PM
30°
65%
9 PM
28°
47%
10 PM
28°
47%
11 PM
28°
41%
12 AM
28°
35%
1 AM
27°
36%
2 AM
27°
18%
3 AM
26°
18%
4 AM
26°
15%
5 AM
26°
7%
6 AM
26°
4%
7 AM
26°
5%
8 AM
26°
3%
9 AM
29°
5%
10 AM
30°
5%
11 AM
32°
5%
12 PM
32°
5%
1 PM
33°
8%
2 PM
34°
8%
3 PM
34°
10%
4 PM
34°
13%
5 PM
32°
19%
6 PM
32°
19%
7-Day Forecast
Tonight
33° 26°
Mostly Clear with a 47% chance of rain.
Thu
35° 26°
Clear with a 36% chance of rain.
Fri
34° 26°
Mostly Clear with a 27% chance of rain.
Sat
33° 27°
Mostly Cloudy with a 60% chance of rain.
Sun
32° 27°
Rain, 71% chance.
Mon
32° 26°
Rain, 83% chance.
Tue
32° 26°
Rain, 83% chance.
TimeTempConditionsPrecipWindHumidity
Now 32° Mostly Clear 37% 6 mph S 68%
8 PM 30° Mostly Clear 65% 7 mph S 76%
9 PM 28° Mostly Clear 47% 7 mph S 80%
10 PM 28° Clear 47% 6 mph S 83%
11 PM 28° Mostly Clear 41% 5 mph SSW 84%
12 AM 28° Partly Cloudy 35% 4 mph SW 84%
1 AM 27° Mostly Clear 36% 4 mph W 84%
2 AM 27° Mostly Clear 18% 5 mph WNW 83%
3 AM 26° Clear 18% 4 mph NW 82%
4 AM 26° Clear 15% 4 mph NNW 82%
5 AM 26° Clear 7% 5 mph N 81%
6 AM 26° Clear 4% 5 mph N 79%
7 AM 26° Clear 5% 6 mph N 76%
8 AM 26° Clear 3% 7 mph NNE 71%
9 AM 29° Clear 5% 6 mph NNE 63%
10 AM 30° Clear 5% 6 mph NNE 56%
11 AM 32° Clear 5% 5 mph NE 51%
12 PM 32° Mostly Clear 5% 4 mph NE 49%
1 PM 33° Mostly Clear 8% 4 mph ENE 47%
2 PM 34° Mostly Clear 8% 4 mph E 46%
3 PM 34° Mostly Clear 10% 4 mph ESE 47%
4 PM 34° Clear 13% 5 mph SE 47%
5 PM 32° Clear 19% 5 mph SSE 49%
6 PM 32° Clear 19% 4 mph SE 52%
15-Day Forecast
Today
7/29
Mostly Clear
47%
26°
33°
Thu
7/30
Clear
36%
26°
35°
Fri
7/31
Mostly Clear
27%
26°
34°
Sat
8/1
Mostly Cloudy
60%
27°
33°
Sun
8/2
Rain
71%
27°
32°
Mon
8/3
Rain
83%
26°
32°
Tue
8/4
Rain
83%
26°
32°
Wed
8/5
Rain
66%
26°
33°
Thu
8/6
Rain
73%
26°
32°
Fri
8/7
Rain
72%
26°
32°
Sat
8/8
Rain
64%
26°
34°
Sun
8/9
Drizzle
60%
27°
35°
Mon
8/10
Drizzle
60%
27°
35°
Tue
8/11
Drizzle
60%
27°
35°
Wed
8/12
Drizzle
60%
27°
35°
58
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
58 AQI 12.6 µg/m³
O3
Ground-level ozone
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 58 Moderate 39 58
Fri 56 Moderate 39 56
Sat 57 Moderate 39 57
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.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Wed Jul 29, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3302 J/kg
MLCAPE2581 J/kg
MUCAPE3349 J/kg
SBCIN-41 J/kg
MLCIN0 J/kg
Lifted Index-7.9
Kinematics
0–6 km Shear27 kt
0–1 km Shear10 kt
Eff. Shear38 kt
0–1 km SRH-34
0–3 km SRH-97
Eff. SRH-97
Storm Motion258° @ 25 kt
0–1 km EHI-0.7
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index25.9
Thermo & Levels
PWAT1.84 in
0–3 km LR7.1 °C/km
700–500 LR5.8 °C/km
Total Totals48.1
LCL914 hPa
LFC870 hPa
EL152 hPa
Freezing Lvl16,457 ft