Heat Advisory — Stephens, GA, Franklin, GA, Hart, GA, Elbert, GA, Gaston, NC, Mecklenburg, NC, Cabarrus, NC, Union, NC, Cherokee, SC, York, SC, Anderson, SC, Abbeville, SC, Laurens, SC, Union, SC, Chester, SC, Greenwood, SC, Greater Oconee, SC, Greater Pickens, SC, Central Greenville, SC, Southern Greenville, SC, Northern Spartanburg, SC, Southern Spartanburg, SC 7:00 PM

Union County, South Carolina, United States

Last updated: 7:57 AM CDT  ·  Refresh
26°C
Feels like 31°
Clear
▲ 35°  /  ▼ 23°
Wind
2 mph NNE
Humidity
82%
Dew Point
23°
Pressure
29.54 inHg
Visibility
8 mi
UV Index
5.6
Cloud Cover
9%
Sunrise
6:47 AM
Sunset
8:13 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2352 J/kg) — isolated convective development possible. Sunrise: 6:47AM · Sunset: 8:13PM.

Alerts

Heat Advisory
Stephens, GA, Franklin, GA, Hart, GA, Elbert, GA, Gaston, NC, Mecklenburg, NC, Cabarrus, NC, Union, NC, Cherokee, SC, York, SC, Anderson, SC, Abbeville, SC, Laurens, SC, Union, SC, Chester, SC, Greenwood, SC, Greater Oconee, SC, Greater Pickens, SC, Central Greenville, SC, Southern Greenville, SC, Northern Spartanburg, SC, Southern Spartanburg, SC
Expires 7:00 PM
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
25%
9 AM
27°
23%
10 AM
29°
16%
11 AM
31°
28%
12 PM
32°
44%
1 PM
34°
48%
2 PM
34°
49%
3 PM
34°
33%
4 PM
34°
30%
5 PM
32°
9%
6 PM
31°
5%
7 PM
29°
5%
8 PM
28°
5%
9 PM
27°
5%
10 PM
26°
5%
11 PM
26°
5%
12 AM
26°
3%
1 AM
26°
3%
2 AM
25°
3%
3 AM
24°
3%
4 AM
24°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
23°
3%
7-Day Forecast
Today
35° 23°
Mostly Clear with a 49% chance of rain.
Mon
39° 23°
Mostly Clear with a 23% chance of rain.
Tue
39° 22°
Mostly Clear with a 28% chance of rain.
Wed
36° 21°
Partly Cloudy.
Thu
38° 22°
Rain, 43% chance.
Fri
33° 19°
Rain, 82% chance.
Sat
33° 19°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 25% 2 mph NNE 82%
9 AM 27° Clear 23% 2 mph NE 70%
10 AM 29° Clear 16% 1 mph NE 62%
11 AM 31° Mostly Clear 28% 1 mph NW 59%
12 PM 32° Mostly Clear 44% 2 mph WSW 55%
1 PM 34° Partly Cloudy 48% 2 mph WSW 52%
2 PM 34° Partly Cloudy 49% 2 mph WSW 53%
3 PM 34° Partly Cloudy 33% 2 mph WSW 53%
4 PM 34° Mostly Clear 30% 2 mph SSW 53%
5 PM 32° Partly Cloudy 9% 2 mph S 56%
6 PM 31° Partly Cloudy 5% 3 mph S 60%
7 PM 29° Partly Cloudy 5% 3 mph S 65%
8 PM 28° Partly Cloudy 5% 4 mph S 70%
9 PM 27° Partly Cloudy 5% 4 mph S 74%
10 PM 26° Partly Cloudy 5% 4 mph S 76%
11 PM 26° Mostly Clear 5% 4 mph S 78%
12 AM 26° Mostly Clear 3% 4 mph S 80%
1 AM 26° Clear 3% 4 mph SSW 81%
2 AM 25° Clear 3% 3 mph SSW 83%
3 AM 24° Clear 3% 3 mph SW 85%
4 AM 24° Clear 3% 3 mph WSW 86%
5 AM 23° Clear 3% 3 mph WSW 86%
6 AM 23° Clear 3% 3 mph WSW 85%
7 AM 23° Clear 3% 3 mph WSW 85%
15-Day Forecast
Today
8/16
Mostly Clear
49%
23°
35°
Mon
8/17
Mostly Clear
23%
23°
39°
Tue
8/18
Mostly Clear
28%
22°
39°
Wed
8/19
Partly Cloudy
15%
21°
36°
Thu
8/20
Rain
43%
22°
38°
Fri
8/21
Rain
82%
19°
33°
Sat
8/22
Rain
82%
19°
33°
Sun
8/23
Rain
69%
19°
32°
Mon
8/24
Drizzle
44%
19°
33°
Tue
8/25
Drizzle
63%
21°
34°
Wed
8/26
Drizzle
60%
21°
34°
Thu
8/27
Drizzle
60%
21°
34°
Fri
8/28
Drizzle
60%
21°
32°
Sat
8/29
Drizzle
90%
20°
31°
Sun
8/30
Drizzle
60%
20°
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 9.2 µg/m³
O3
Ground-level ozone
34 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 51 Moderate 34 51
Tue 54 Moderate 42 54
Wed 52 Moderate 44 52
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 Sun Aug 16, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1026 J/kg
MLCAPE861 J/kg
MUCAPE1203 J/kg
SBCIN-89 J/kg
MLCIN-70 J/kg
Lifted Index-3.9
Kinematics
0–6 km Shear8 kt
0–1 km Shear1 kt
Eff. Shear6 kt
0–1 km SRH4
0–3 km SRH-6
Eff. SRH-6
Storm Motion344° @ 17 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.3
Thermo & Levels
PWAT2.17 in
0–3 km LR5.0 °C/km
700–500 LR6.0 °C/km
Total Totals47.3
LCL962 hPa
LFC797 hPa
EL170 hPa
Freezing Lvl15,863 ft