Charleston, South Carolina

Last updated: 7:28 PM CDT  ·  Refresh
30°C
Feels like 36°
Partly Cloudy
▲ 33°  /  ▼ 26°
Wind
8 mph S
Humidity
75%
Dew Point
25°
Pressure
29.74 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
38%
Sunrise
6:31 AM
Sunset
8:20 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Charleston is currently partly cloudy at 30°C. Precipitation is likely — peak probability 64% around 9 PM. Atmospheric instability is elevated (CAPE up to 2880 J/kg) — isolated convective development possible. Sunrise: 6:31AM · Sunset: 8:20PM.

Alerts

No active alerts for this location.
57 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
30°
50%
9 PM
28°
64%
10 PM
28°
39%
11 PM
28°
35%
12 AM
28°
33%
1 AM
27°
30%
2 AM
27°
26%
3 AM
26°
26%
4 AM
26°
15%
5 AM
26°
7%
6 AM
26°
4%
7 AM
26°
4%
8 AM
27°
3%
9 AM
29°
5%
10 AM
30°
5%
11 AM
32°
5%
12 PM
32°
5%
1 PM
33°
8%
2 PM
33°
10%
3 PM
34°
10%
4 PM
34°
13%
5 PM
32°
19%
6 PM
32°
19%
7 PM
31°
19%
7-Day Forecast
Tonight
33° 26°
Partly Cloudy with a 50% chance of rain.
Thu
35° 26°
Mostly Clear with a 26% chance of rain.
Fri
35° 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 30° Partly Cloudy 50% 8 mph S 75%
9 PM 28° Mostly Clear 64% 7 mph S 82%
10 PM 28° Clear 39% 7 mph S 84%
11 PM 28° Clear 35% 5 mph SSW 84%
12 AM 28° Clear 33% 4 mph SW 84%
1 AM 27° Mostly Clear 30% 5 mph W 84%
2 AM 27° Mostly Clear 26% 5 mph W 83%
3 AM 26° Clear 26% 4 mph WNW 83%
4 AM 26° Clear 15% 4 mph NNW 82%
5 AM 26° Clear 7% 5 mph N 81%
6 AM 26° Clear 4% 6 mph N 80%
7 AM 26° Clear 4% 7 mph NNE 77%
8 AM 27° Clear 3% 7 mph NNE 71%
9 AM 29° Clear 5% 7 mph NNE 64%
10 AM 30° Clear 5% 7 mph NE 58%
11 AM 32° Clear 5% 6 mph ENE 54%
12 PM 32° Mostly Clear 5% 5 mph ENE 52%
1 PM 33° Mostly Clear 8% 4 mph E 51%
2 PM 33° Mostly Clear 10% 5 mph ESE 50%
3 PM 34° Mostly Clear 10% 5 mph SE 50%
4 PM 34° Mostly Clear 13% 5 mph SE 51%
5 PM 32° Clear 19% 5 mph SE 52%
6 PM 32° Clear 19% 5 mph SE 55%
7 PM 31° Clear 19% 5 mph SE 58%
15-Day Forecast
Today
7/29
Partly Cloudy
50%
26°
33°
Thu
7/30
Mostly Clear
26%
26°
35°
Fri
7/31
Mostly Clear
27%
26°
35°
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°
33°
Sun
8/9
Drizzle
60%
27°
34°
Mon
8/10
Drizzle
60%
27°
34°
Tue
8/11
Drizzle
60%
27°
34°
Wed
8/12
Drizzle
60%
27°
34°
57
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
57 AQI 12.5 µg/m³
O3
Ground-level ozone
38 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 57 Moderate 38 57
Fri 57 Moderate 41 57
Sat 58 Moderate 39 58
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, 23:00'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
SBCAPE3257 J/kg
MLCAPE3186 J/kg
MUCAPE4374 J/kg
SBCIN-64 J/kg
MLCIN0 J/kg
Lifted Index-7.8
Kinematics
0–6 km Shear25 kt
0–1 km Shear12 kt
Eff. Shear39 kt
0–1 km SRH-44
0–3 km SRH-106
Eff. SRH-106
Storm Motion258° @ 24 kt
0–1 km EHI-0.9
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index30.4
Thermo & Levels
PWAT1.92 in
0–3 km LR6.7 °C/km
700–500 LR5.6 °C/km
Total Totals48.2
LCL942 hPa
LFC869 hPa
EL152 hPa
Freezing Lvl16,473 ft