Coastal Flood Advisory — Coastal Colleton, SC, Charleston, SC 9:00 AM

Charleston, South Carolina

Last updated: 4:33 AM CDT  ·  Refresh
15°C
Feels like 13°
Mostly Clear
▲ 27°  /  ▼ 16°
Wind
6 mph NNW
Humidity
74%
Dew Point
11°
Pressure
29.96 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
23%
Sunrise
7:10 AM
Sunset
7:10 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Charleston is currently mostly clear at 15°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:10AM · Sunset: 7:10PM.

Alerts

Coastal Flood Advisory
Coastal Colleton, SC, Charleston, SC
Expires 9:00 AM
46 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
15°
3%
6 AM
14°
3%
7 AM
14°
3%
8 AM
15°
3%
9 AM
18°
3%
10 AM
21°
3%
11 AM
22°
3%
12 PM
23°
3%
1 PM
25°
3%
2 PM
26°
3%
3 PM
26°
3%
4 PM
27°
3%
5 PM
25°
3%
6 PM
23°
3%
7 PM
22°
3%
8 PM
21°
3%
9 PM
20°
3%
10 PM
19°
3%
11 PM
20°
3%
12 AM
19°
3%
1 AM
19°
3%
2 AM
19°
3%
3 AM
18°
3%
4 AM
17°
3%
7-Day Forecast
Today
27° 16°
Clear.
Sun
29° 16°
Clear.
Mon
29° 17°
Mostly Clear.
Tue
28° 20°
Clear.
Wed
29° 23°
Clear.
Thu
31° 23°
Clear.
Fri
29° 23°
Clear with a 31% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 15° Mostly Clear 3% 6 mph NNW 74%
6 AM 14° Clear 3% 7 mph NNW 70%
7 AM 14° Clear 3% 7 mph NNW 66%
8 AM 15° Clear 3% 8 mph NNW 59%
9 AM 18° Clear 3% 8 mph N 51%
10 AM 21° Clear 3% 8 mph NNW 43%
11 AM 22° Clear 3% 8 mph NNW 38%
12 PM 23° Clear 3% 9 mph NNW 36%
1 PM 25° Clear 3% 9 mph NNW 34%
2 PM 26° Clear 3% 9 mph NW 33%
3 PM 26° Clear 3% 8 mph NW 31%
4 PM 27° Clear 3% 7 mph NW 29%
5 PM 25° Clear 3% 6 mph NW 31%
6 PM 23° Clear 3% 5 mph NW 38%
7 PM 22° Clear 3% 5 mph WNW 44%
8 PM 21° Clear 3% 5 mph WNW 48%
9 PM 20° Clear 3% 5 mph WNW 52%
10 PM 19° Clear 3% 5 mph W 55%
11 PM 20° Mostly Clear 3% 6 mph WNW 50%
12 AM 19° Mostly Clear 3% 6 mph W 50%
1 AM 19° Mostly Clear 3% 6 mph W 50%
2 AM 19° Mostly Clear 3% 6 mph W 50%
3 AM 18° Clear 3% 6 mph W 52%
4 AM 17° Clear 3% 6 mph WNW 53%
15-Day Forecast
Today
9/26
Clear
3%
16°
27°
Sun
9/27
Clear
3%
16°
29°
Mon
9/28
Mostly Clear
8%
17°
29°
Tue
9/29
Clear
9%
20°
28°
Wed
9/30
Clear
8%
23°
29°
Thu
10/1
Clear
8%
23°
31°
Fri
10/2
Clear
31%
23°
29°
Sat
10/3
Rain
69%
23°
30°
Sun
10/4
Drizzle
44%
24°
30°
Mon
10/5
Drizzle
60%
22°
29°
Tue
10/6
Drizzle
90%
19°
29°
Wed
10/7
Drizzle
60%
18°
24°
Thu
10/8
Drizzle
60%
18°
24°
Fri
10/9
Drizzle
60%
18°
24°
Sat
10/10
Drizzle
60%
18°
25°
46
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
46 AQI 8.4 µg/m³
O3
Ground-level ozone
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 46 Good 36 46
Sun 46 Good 35 46
Mon 53 Moderate 41 53
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 Sat Sep 26, 08:00'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
SBCAPE0 J/kg
MLCAPE13 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index17.6
Kinematics
0–6 km Shear26 kt
0–1 km Shear8 kt
Eff. Shear—
0–1 km SRH-32
0–3 km SRH11
Eff. SRH—
Storm Motion6° @ 27 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-20.7
Thermo & Levels
PWAT0.76 in
0–3 km LR2.1 °C/km
700–500 LR5.1 °C/km
Total Totals24.5
LCL955 hPa
LFC1015 hPa
EL1015 hPa
Freezing Lvl15,509 ft