Charleston County, South Carolina, United States

Last updated: 7:10 PM CDT  ·  Refresh
25°C
Feels like 27°
Mostly Clear
▲ 27°  /  ▼ 19°
Wind
5 mph NNW
Humidity
72%
Dew Point
19°
Pressure
29.95 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
11%
Sunrise
7:21 AM
Sunset
6:49 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Charleston County is currently mostly clear at 25°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:21AM · Sunset: 6:49PM.

Alerts

No active alerts for this location.
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
8%
9 PM
23°
8%
10 PM
23°
3%
11 PM
22°
3%
12 AM
22°
3%
1 AM
22°
3%
2 AM
22°
3%
3 AM
22°
3%
4 AM
21°
3%
5 AM
21°
3%
6 AM
20°
3%
7 AM
20°
3%
8 AM
20°
3%
9 AM
22°
3%
10 AM
24°
3%
11 AM
26°
3%
12 PM
26°
3%
1 PM
26°
3%
2 PM
27°
3%
3 PM
27°
3%
4 PM
27°
3%
5 PM
27°
3%
6 PM
25°
3%
7 PM
24°
3%
7-Day Forecast
Tonight
27° 19°
Mostly Clear.
Tue
28° 20°
Clear.
Wed
28° 21°
Partly Cloudy.
Thu
27° 21°
Fog.
Fri
28° 20°
Fog.
Sat
23° 14°
Clear.
Sun
20° 13°
Rain, 28% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Mostly Clear 8% 5 mph NNW 72%
9 PM 23° Clear 8% 3 mph N 75%
10 PM 23° Clear 3% 2 mph N 75%
11 PM 22° Mostly Clear 3% 3 mph NNW 76%
12 AM 22° Mostly Clear 3% 3 mph NW 76%
1 AM 22° Mostly Clear 3% 4 mph WNW 77%
2 AM 22° Partly Cloudy 3% 4 mph WNW 77%
3 AM 22° Mostly Clear 3% 5 mph NW 79%
4 AM 21° Clear 3% 5 mph NW 79%
5 AM 21° Clear 3% 5 mph NNW 80%
6 AM 20° Clear 3% 5 mph NNW 81%
7 AM 20° Clear 3% 5 mph N 82%
8 AM 20° Clear 3% 4 mph N 82%
9 AM 22° Clear 3% 4 mph NNE 78%
10 AM 24° Clear 3% 3 mph NNE 73%
11 AM 26° Clear 3% 3 mph NE 68%
12 PM 26° Clear 3% 3 mph ENE 67%
1 PM 26° Clear 3% 3 mph E 66%
2 PM 27° Clear 3% 4 mph E 66%
3 PM 27° Clear 3% 4 mph ESE 68%
4 PM 27° Clear 3% 4 mph ESE 70%
5 PM 27° Clear 3% 4 mph SE 72%
6 PM 25° Clear 3% 4 mph SE 75%
7 PM 24° Clear 3% 4 mph SSE 79%
15-Day Forecast
Today
10/12
Mostly Clear
8%
19°
27°
Tue
10/13
Clear
3%
20°
28°
Wed
10/14
Partly Cloudy
17%
21°
28°
Thu
10/15
Fog
3%
21°
27°
Fri
10/16
Fog
12%
20°
28°
Sat
10/17
Clear
8%
14°
23°
Sun
10/18
Rain
28%
13°
20°
Mon
10/19
Clear
28%
16°
24°
Tue
10/20
Drizzle
44%
19°
26°
Wed
10/21
Rain
68%
19°
24°
Thu
10/22
Drizzle
60%
17°
24°
Fri
10/23
Clear
60%
19°
24°
Sat
10/24
Drizzle
60%
18°
24°
Sun
10/25
Drizzle
60%
18°
24°
Mon
10/26
Drizzle
60%
18°
23°
49
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
49 AQI 8.8 µg/m³
O3
Ground-level ozone
38 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 49 Good 38 49
Wed 52 Moderate 35 52
Thu 42 Good 41 42
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Mon Oct 12, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE5 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index2.3
Kinematics
0–6 km Shear18 kt
0–1 km Shear10 kt
Eff. Shear—
0–1 km SRH44
0–3 km SRH63
Eff. SRH—
Storm Motion27° @ 22 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index9.2
Thermo & Levels
PWAT1.14 in
0–3 km LR4.9 °C/km
700–500 LR5.5 °C/km
Total Totals37.0
LCL931 hPa
LFC—
EL—
Freezing Lvl16,942 ft