Lake Wind Advisory — Lincoln, GA, McDuffie, GA, Columbia, GA, Richmond, GA, Burke, GA, Chesterfield, SC, McCormick, SC, Newberry, SC, Fairfield, SC, Kershaw, SC, Edgefield, SC, Saluda, SC, Lexington, SC, Richland, SC, Lee, SC, Aiken, SC, Sumter, SC, Barnwell, SC, Calhoun, SC, Clarendon, SC, Bamberg, SC, Northern Lancaster, SC, Southern Lancaster, SC, Northwestern Orangeburg, SC, Central Orangeburg, SC, Southeastern Orangeburg, SC 7:00 PM

Sumter, South Carolina

Last updated: 7:39 PM CDT  ·  Refresh
78°F
Feels like 78°
Clear
▲ 87°  /  ▼ 54°
Wind
6 mph SSW
Humidity
60%
Dew Point
63°
Pressure
29.69 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
2%
Sunrise
7:27 AM
Sunset
6:46 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Sumter is currently clear at 78°F. Precipitation is likely — peak probability 81% around 6 AM. Sunrise: 7:27AM · Sunset: 6:46PM.

Alerts

Lake Wind Advisory
Lincoln, GA, McDuffie, GA, Columbia, GA, Richmond, GA, Burke, GA, Chesterfield, SC, McCormick, SC, Newberry, SC, Fairfield, SC, Kershaw, SC, Edgefield, SC, Saluda, SC, Lexington, SC, Richland, SC, Lee, SC, Aiken, SC, Sumter, SC, Barnwell, SC, Calhoun, SC, Clarendon, SC, Bamberg, SC, Northern Lancaster, SC, Southern Lancaster, SC, Northwestern Orangeburg, SC, Central Orangeburg, SC, Southeastern Orangeburg, SC
Expires 7:00 PM
54 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
78°
10%
9 PM
75°
23%
10 PM
74°
18%
11 PM
72°
27%
12 AM
71°
28%
1 AM
70°
28%
2 AM
69°
43%
3 AM
67°
61%
4 AM
65°
74%
5 AM
62°
77%
6 AM
59°
81%
7 AM
57°
81%
8 AM
55°
81%
9 AM
55°
69%
10 AM
54°
66%
11 AM
54°
46%
12 PM
55°
34%
1 PM
59°
20%
2 PM
60°
20%
3 PM
61°
20%
4 PM
61°
16%
5 PM
57°
13%
6 PM
56°
14%
7 PM
55°
11%
7-Day Forecast
Tonight
87° 54°
Mostly Clear with a 27% chance of rain.
Sat
82° 48°
Overcast with a 81% chance of rain.
Sun
67° 43°
Clear.
Mon
67° 44°
Clear.
Tue
75° 47°
Clear.
Wed
74° 49°
Clear.
Thu
72° 46°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 78° Clear 10% 6 mph SSW 60%
9 PM 75° Clear 23% 7 mph SSW 60%
10 PM 74° Clear 18% 8 mph SSW 62%
11 PM 72° Mostly Clear 27% 7 mph SW 63%
12 AM 71° Mostly Clear 28% 7 mph SW 65%
1 AM 70° Partly Cloudy 28% 7 mph WSW 68%
2 AM 69° Mostly Cloudy 43% 7 mph WNW 71%
3 AM 67° Mostly Cloudy 61% 10 mph NNW 72%
4 AM 65° Overcast 74% 12 mph NNW 74%
5 AM 62° Rain 77% 13 mph NNW 77%
6 AM 59° Rain 81% 13 mph N 81%
7 AM 57° Rain 81% 13 mph NNW 86%
8 AM 55° Overcast 81% 14 mph NNW 87%
9 AM 55° Overcast 69% 15 mph NNW 85%
10 AM 54° Overcast 66% 16 mph NNW 83%
11 AM 54° Overcast 46% 16 mph NNW 81%
12 PM 55° Overcast 34% 16 mph N 79%
1 PM 59° Overcast 20% 16 mph N 77%
2 PM 60° Mostly Cloudy 20% 16 mph N 75%
3 PM 61° Mostly Cloudy 20% 16 mph N 73%
4 PM 61° Partly Cloudy 16% 16 mph N 71%
5 PM 57° Partly Cloudy 13% 15 mph NNE 71%
6 PM 56° Partly Cloudy 14% 14 mph NNE 72%
7 PM 55° Partly Cloudy 11% 13 mph NNE 74%
15-Day Forecast
Today
10/16
Mostly Clear
27%
54°
87°
Sat
10/17
Overcast
81%
48°
82°
Sun
10/18
Clear
14%
43°
67°
Mon
10/19
Clear
6%
44°
67°
Tue
10/20
Clear
3%
47°
75°
Wed
10/21
Clear
3%
49°
74°
Thu
10/22
Clear
3%
46°
72°
Fri
10/23
Clear
3%
47°
73°
Sat
10/24
Clear
3%
47°
74°
Sun
10/25
Mostly Cloudy
31%
50°
73°
Mon
10/26
Clear
36%
49°
77°
Tue
10/27
Clear
3%
54°
74°
Wed
10/28
Drizzle
60%
53°
71°
Thu
10/29
Drizzle
60%
53°
72°
Fri
10/30
Clear
25%
54°
73°
54
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
54 AQI 10.5 µg/m³
O3
Ground-level ozone
42 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 54 Moderate 42 54
Sun 34 Good 34 27
Mon 35 Good 35 16
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 Oct 16, 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
SBCAPE1 J/kg
MLCAPE6 J/kg
MUCAPE7 J/kg
SBCIN-180 J/kg
MLCIN0 J/kg
Lifted Index2.5
Kinematics
0–6 km Shear34 kt
0–1 km Shear16 kt
Eff. Shear—
0–1 km SRH44
0–3 km SRH48
Eff. SRH—
Storm Motion262° @ 32 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index0.8
Thermo & Levels
PWAT1.28 in
0–3 km LR5.0 °C/km
700–500 LR6.1 °C/km
Total Totals40.0
LCL895 hPa
LFC809 hPa
EL792 hPa
Freezing Lvl15,325 ft