Severe Thunderstorm Warning — Marlboro County, SC 5:00 PM Severe Thunderstorm Watch 8:00 PM Severe Thunderstorm Watch 8:00 PM

Marlboro County, South Carolina, United States

Last updated: 4:15 PM CDT  ·  Refresh
29°C
Feels like 33°
Mostly Cloudy
▲ 31°  /  ▼ 21°
Wind
6 mph E
Humidity
78%
Dew Point
23°
Pressure
29.80 inHg
Visibility
10 mi
UV Index
3.7
Cloud Cover
82%
Sunrise
6:43 AM
Sunset
7:59 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Marlboro County is currently mostly cloudy at 29°C. Precipitation is likely — peak probability 90% around 5 PM. Atmospheric instability is elevated (CAPE up to 2006 J/kg) — isolated convective development possible. Sunrise: 6:43AM · Sunset: 7:59PM.

Alerts

Severe Thunderstorm Warning
Marlboro County, SC
Expires 5:00 PM
Severe Thunderstorm Watch
Expires 8:00 PM
Severe Thunderstorm Watch
Expires 8:00 PM
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
90%
6 PM
28°
90%
7 PM
27°
90%
8 PM
24°
73%
9 PM
24°
74%
10 PM
23°
75%
11 PM
22°
67%
12 AM
22°
53%
1 AM
22°
68%
2 AM
22°
31%
3 AM
21°
27%
4 AM
21°
28%
5 AM
21°
28%
6 AM
21°
40%
7 AM
21°
45%
8 AM
21°
34%
9 AM
22°
34%
10 AM
24°
37%
11 AM
26°
47%
12 PM
27°
52%
1 PM
27°
57%
2 PM
29°
57%
3 PM
29°
58%
4 PM
29°
58%
7-Day Forecast
Today
31° 21°
Mostly Cloudy with a 90% chance of rain.
Sat
32° 21°
Partly Cloudy with a 65% chance of rain.
Sun
33° 21°
Clear with a 25% chance of rain.
Mon
32° 19°
Mostly Cloudy with a 60% chance of rain.
Tue
31° 20°
Clear with a 51% chance of rain.
Wed
32° 20°
Rain, 70% chance.
Thu
31° 21°
Heavy Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Cloudy 90% 6 mph E 78%
6 PM 28° Mostly Cloudy 90% 8 mph E 84%
7 PM 27° Heavy Rain 90% 10 mph E 87%
8 PM 24° Thunderstorm 73% 11 mph SE 90%
9 PM 24° Heavy Rain 74% 8 mph E 92%
10 PM 23° Heavy Rain 75% 7 mph E 94%
11 PM 22° Overcast 67% 6 mph ENE 96%
12 AM 22° Overcast 53% 4 mph E 96%
1 AM 22° Overcast 68% 5 mph E 95%
2 AM 22° Overcast 31% 4 mph ESE 95%
3 AM 21° Mostly Cloudy 27% 3 mph E 96%
4 AM 21° Mostly Cloudy 28% 2 mph NE 96%
5 AM 21° Mostly Cloudy 28% 2 mph ENE 96%
6 AM 21° Mostly Cloudy 40% 2 mph NE 95%
7 AM 21° Mostly Cloudy 45% 2 mph ENE 94%
8 AM 21° Partly Cloudy 34% 2 mph E 92%
9 AM 22° Mostly Cloudy 34% 2 mph SE 87%
10 AM 24° Mostly Cloudy 37% 3 mph SW 82%
11 AM 26° Partly Cloudy 47% 4 mph SW 78%
12 PM 27° Partly Cloudy 52% 4 mph SW 75%
1 PM 27° Partly Cloudy 57% 4 mph SW 72%
2 PM 29° Partly Cloudy 57% 4 mph SW 69%
3 PM 29° Partly Cloudy 58% 4 mph SW 68%
4 PM 29° Partly Cloudy 58% 5 mph SW 67%
15-Day Forecast
Today
8/21
Mostly Cloudy
90%
21°
31°
Sat
8/22
Partly Cloudy
65%
21°
32°
Sun
8/23
Clear
25%
21°
33°
Mon
8/24
Mostly Cloudy
60%
19°
32°
Tue
8/25
Clear
51%
20°
31°
Wed
8/26
Rain
70%
20°
32°
Thu
8/27
Heavy Rain
82%
21°
31°
Fri
8/28
Drizzle
72%
20°
33°
Sat
8/29
Drizzle
44%
22°
31°
Sun
8/30
Drizzle
51%
20°
33°
Mon
8/31
Drizzle
60%
23°
33°
Tue
9/1
Drizzle
60%
23°
34°
Wed
9/2
Drizzle
60%
22°
33°
Thu
9/3
Drizzle
60%
22°
33°
Fri
9/4
Drizzle
60%
21°
32°
51
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
51 AQI 9.3 µg/m³
O3
Ground-level ozone
45 AQI 50 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 51 Moderate 45 51
Sun 39 Good 39 31
Mon 42 Good 38 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 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Fri Aug 21, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1578 J/kg
MLCAPE2183 J/kg
MUCAPE2401 J/kg
SBCIN-44 J/kg
MLCIN-20 J/kg
Lifted Index-4.9
Kinematics
0–6 km Shear23 kt
0–1 km Shear3 kt
Eff. Shear22 kt
0–1 km SRH12
0–3 km SRH71
Eff. SRH71
Storm Motion295° @ 13 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell1.9
K-Index42.0
Thermo & Levels
PWAT2.58 in
0–3 km LR6.4 °C/km
700–500 LR5.7 °C/km
Total Totals51.0
LCL923 hPa
LFC798 hPa
EL167 hPa
Freezing Lvl14,505 ft