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: 6:46 AM CDT  ·  Refresh
24°C
Feels like 28°
Mostly Clear
▲ 35°  /  ▼ 23°
Wind
2 mph N
Humidity
89%
Dew Point
23°
Pressure
29.54 inHg
Visibility
9 mi
UV Index
3.3
Cloud Cover
12%
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 mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2210 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
24°
25%
8 AM
25°
25%
9 AM
27°
24%
10 AM
29°
16%
11 AM
30°
29%
12 PM
31°
43%
1 PM
34°
44%
2 PM
34°
37%
3 PM
34°
39%
4 PM
34°
30%
5 PM
32°
10%
6 PM
31°
10%
7 PM
29°
5%
8 PM
28°
5%
9 PM
27°
5%
10 PM
27°
5%
11 PM
26°
5%
12 AM
26°
3%
1 AM
26°
3%
2 AM
25°
3%
3 AM
25°
3%
4 AM
24°
3%
5 AM
23°
3%
6 AM
23°
3%
7-Day Forecast
Today
35° 23°
Mostly Clear with a 44% chance of rain.
Mon
39° 23°
Clear with a 23% chance of rain.
Tue
39° 22°
Clear with a 28% chance of rain.
Wed
35° 20°
Mostly Clear.
Thu
38° 21°
Rain, 43% chance.
Fri
33° 19°
Rain, 90% chance.
Sat
32° 19°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 25% 2 mph N 89%
8 AM 25° Clear 25% 2 mph NE 80%
9 AM 27° Clear 24% 2 mph NE 71%
10 AM 29° Clear 16% 1 mph NE 64%
11 AM 30° Mostly Clear 29% 1 mph WNW 60%
12 PM 31° Mostly Clear 43% 1 mph W 57%
1 PM 34° Partly Cloudy 44% 2 mph W 53%
2 PM 34° Partly Cloudy 37% 2 mph W 52%
3 PM 34° Partly Cloudy 39% 2 mph W 52%
4 PM 34° Mostly Clear 30% 2 mph SSW 53%
5 PM 32° Mostly Clear 10% 2 mph S 55%
6 PM 31° Partly Cloudy 10% 3 mph S 59%
7 PM 29° Partly Cloudy 5% 3 mph S 64%
8 PM 28° Partly Cloudy 5% 3 mph S 68%
9 PM 27° Partly Cloudy 5% 4 mph S 72%
10 PM 27° Partly Cloudy 5% 4 mph S 75%
11 PM 26° Mostly Clear 5% 4 mph S 77%
12 AM 26° Mostly Clear 3% 4 mph S 79%
1 AM 26° Clear 3% 4 mph S 81%
2 AM 25° Clear 3% 3 mph SSW 83%
3 AM 25° Clear 3% 3 mph SSW 84%
4 AM 24° Clear 3% 3 mph SW 86%
5 AM 23° Clear 3% 3 mph SW 86%
6 AM 23° Clear 3% 4 mph SW 85%
15-Day Forecast
Today
8/16
Mostly Clear
44%
23°
35°
Mon
8/17
Clear
23%
23°
39°
Tue
8/18
Clear
28%
22°
39°
Wed
8/19
Mostly Clear
15%
20°
35°
Thu
8/20
Rain
43%
21°
38°
Fri
8/21
Rain
90%
19°
33°
Sat
8/22
Rain
82%
19°
32°
Sun
8/23
Rain
69%
19°
32°
Mon
8/24
Drizzle
44%
19°
33°
Tue
8/25
Drizzle
63%
20°
33°
Wed
8/26
Drizzle
60%
21°
34°
Thu
8/27
Drizzle
60%
22°
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, 10:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE269 J/kg
MLCAPE469 J/kg
MUCAPE1003 J/kg
SBCIN-184 J/kg
MLCIN-106 J/kg
Lifted Index-2.2
Kinematics
0–6 km Shear8 kt
0–1 km Shear2 kt
Eff. Shear8 kt
0–1 km SRH8
0–3 km SRH-5
Eff. SRH-5
Storm Motion337° @ 18 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.3
Thermo & Levels
PWAT2.14 in
0–3 km LR4.4 °C/km
700–500 LR6.0 °C/km
Total Totals47.2
LCL979 hPa
LFC676 hPa
EL260 hPa
Freezing Lvl15,840 ft