Severe Thunderstorm Watch 8:00 PM Severe Thunderstorm Watch 8:00 PM

Spartanburg County, South Carolina, United States

Last updated: 4:16 PM CDT  ·  Refresh
31°C
Feels like 33°
Partly Cloudy
▲ 31°  /  ▼ 19°
Wind
4 mph E
Humidity
56%
Dew Point
21°
Pressure
29.09 inHg
Visibility
10 mi
UV Index
5.8
Cloud Cover
54%
Sunrise
6:52 AM
Sunset
8:08 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Spartanburg County is currently partly cloudy at 31°C. Precipitation is likely — peak probability 78% around 6 PM. Atmospheric instability is elevated (CAPE up to 1367 J/kg) — isolated convective development possible. Sunrise: 6:52AM · Sunset: 8:08PM.

Alerts

Severe Thunderstorm Watch
Expires 8:00 PM
Severe Thunderstorm Watch
Expires 8:00 PM
51 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
49%
6 PM
30°
77%
7 PM
27°
73%
8 PM
26°
70%
9 PM
25°
72%
10 PM
23°
77%
11 PM
22°
69%
12 AM
22°
63%
1 AM
22°
55%
2 AM
22°
21%
3 AM
21°
19%
4 AM
21°
17%
5 AM
21°
18%
6 AM
19°
18%
7 AM
19°
3%
8 AM
19°
8%
9 AM
21°
17%
10 AM
22°
18%
11 AM
23°
18%
12 PM
26°
18%
1 PM
27°
19%
2 PM
29°
22%
3 PM
29°
28%
4 PM
29°
28%
7-Day Forecast
Today
31° 19°
Partly Cloudy with a 70% chance of rain.
Sat
33° 19°
Partly Cloudy with a 34% chance of rain.
Sun
33° 18°
Clear.
Mon
32° 17°
Mostly Clear with a 45% chance of rain.
Tue
32° 17°
Clear.
Wed
33° 19°
Rain, 82% chance.
Thu
31° 21°
Rain, 64% chance.
TimeTempConditionsPrecipWindHumidity
Now 31° Partly Cloudy 49% 4 mph E 56%
6 PM 30° Partly Cloudy 77% 5 mph ESE 61%
7 PM 27° Rain 73% 6 mph E 70%
8 PM 26° Rain 70% 6 mph E 76%
9 PM 25° Drizzle 72% 5 mph E 83%
10 PM 23° Rain 77% 5 mph ENE 88%
11 PM 22° Overcast 69% 5 mph ENE 93%
12 AM 22° Overcast 63% 4 mph ENE 94%
1 AM 22° Overcast 55% 4 mph NE 96%
2 AM 22° Overcast 21% 4 mph ENE 96%
3 AM 21° Mostly Cloudy 19% 3 mph NE 97%
4 AM 21° Mostly Cloudy 17% 3 mph N 97%
5 AM 21° Partly Cloudy 18% 3 mph N 97%
6 AM 19° Partly Cloudy 18% 3 mph N 96%
7 AM 19° Partly Cloudy 3% 3 mph NE 96%
8 AM 19° Mostly Cloudy 8% 2 mph NE 94%
9 AM 21° Mostly Cloudy 17% 2 mph ENE 88%
10 AM 22° Mostly Cloudy 18% 2 mph ENE 82%
11 AM 23° Mostly Cloudy 18% 2 mph NE 77%
12 PM 26° Partly Cloudy 18% 2 mph ENE 70%
1 PM 27° Partly Cloudy 19% 2 mph ENE 64%
2 PM 29° Partly Cloudy 22% 2 mph ESE 59%
3 PM 29° Partly Cloudy 28% 2 mph SSW 57%
4 PM 29° Partly Cloudy 28% 3 mph SSW 55%
15-Day Forecast
Today
8/21
Partly Cloudy
70%
19°
31°
Sat
8/22
Partly Cloudy
34%
19°
33°
Sun
8/23
Clear
7%
18°
33°
Mon
8/24
Mostly Clear
45%
17°
32°
Tue
8/25
Clear
16%
17°
32°
Wed
8/26
Rain
82%
19°
33°
Thu
8/27
Rain
64%
21°
31°
Fri
8/28
Clear
42%
18°
34°
Sat
8/29
Rain
68%
21°
32°
Sun
8/30
Rain
68%
18°
34°
Mon
8/31
Drizzle
60%
21°
35°
Tue
9/1
Drizzle
60%
23°
36°
Wed
9/2
Drizzle
60%
23°
35°
Thu
9/3
Drizzle
60%
23°
34°
Fri
9/4
Drizzle
60%
23°
34°
51
Moderate
U.S. Air Quality Index · Dominant: O3
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
43 AQI 7.8 µg/m³
O3
Ground-level ozone
Dominant
51 AQI 56 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 51 Moderate 51 43
Sun 46 Good 43 46
Mon 48 Good 37 48
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
SBCAPE1900 J/kg
MLCAPE1343 J/kg
MUCAPE1900 J/kg
SBCIN-0 J/kg
MLCIN-18 J/kg
Lifted Index-5.3
Kinematics
0–6 km Shear13 kt
0–1 km Shear5 kt
Eff. Shear16 kt
0–1 km SRH17
0–3 km SRH93
Eff. SRH93
Storm Motion280° @ 21 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.3
Thermo & Levels
PWAT1.85 in
0–3 km LR7.4 °C/km
700–500 LR5.7 °C/km
Total Totals47.8
LCL860 hPa
LFC849 hPa
EL160 hPa
Freezing Lvl14,203 ft