Severe Thunderstorm Warning — Union County, NC 4:30 PM Severe Thunderstorm Watch 8:00 PM Severe Thunderstorm Watch 8:00 PM Areal Flood Advisory — Mecklenburg County, NC, Union County, NC 9:45 PM

Union County, North Carolina, United States

Last updated: 4:14 PM CDT  ·  Refresh
29°C
Feels like 34°
Overcast
▲ 31°  /  ▼ 19°
Wind
6 mph E
Humidity
76%
Dew Point
22°
Pressure
29.36 inHg
Visibility
8 mi
UV Index
2.5
Cloud Cover
94%
Sunrise
6:46 AM
Sunset
8:02 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently overcast at 29°C. Precipitation is likely — peak probability 83% around 5 PM. Atmospheric instability is elevated (CAPE up to 1613 J/kg) — isolated convective development possible. Sunrise: 6:46AM · Sunset: 8:02PM.

Alerts

Severe Thunderstorm Warning
Union County, NC
Expires 4:30 PM
Severe Thunderstorm Watch
Expires 8:00 PM
Severe Thunderstorm Watch
Expires 8:00 PM
Areal Flood Advisory
Mecklenburg County, NC, Union County, NC
Expires 9:45 PM
37 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
83%
6 PM
27°
83%
7 PM
26°
71%
8 PM
24°
72%
9 PM
24°
73%
10 PM
22°
67%
11 PM
22°
59%
12 AM
22°
64%
1 AM
22°
60%
2 AM
22°
36%
3 AM
21°
36%
4 AM
21°
40%
5 AM
21°
21%
6 AM
19°
21%
7 AM
19°
27%
8 AM
19°
22%
9 AM
21°
28%
10 AM
22°
19%
11 AM
23°
28%
12 PM
24°
29%
1 PM
26°
29%
2 PM
28°
29%
3 PM
28°
30%
4 PM
29°
30%
7-Day Forecast
Today
31° 19°
Overcast with a 83% chance of rain.
Sat
31° 19°
Mostly Cloudy with a 36% chance of rain.
Sun
33° 19°
Clear.
Mon
33° 17°
Mostly Clear with a 45% chance of rain.
Tue
32° 17°
Rain, 64% chance.
Wed
33° 19°
Rain, 70% chance.
Thu
31° 22°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 29° Overcast 83% 6 mph E 76%
6 PM 27° Overcast 83% 4 mph N 81%
7 PM 26° Rain 71% 6 mph N 88%
8 PM 24° Rain 72% 8 mph NE 93%
9 PM 24° Overcast 73% 7 mph ENE 95%
10 PM 22° Overcast 67% 6 mph ESE 96%
11 PM 22° Overcast 59% 7 mph SE 97%
12 AM 22° Overcast 64% 5 mph SE 97%
1 AM 22° Overcast 60% 4 mph S 97%
2 AM 22° Overcast 36% 3 mph SW 97%
3 AM 21° Overcast 36% 2 mph WSW 97%
4 AM 21° Mostly Cloudy 40% 3 mph NNW 98%
5 AM 21° Rain 21% 3 mph NNW 98%
6 AM 19° Mostly Cloudy 21% 2 mph NNE 97%
7 AM 19° Haze 27% 2 mph E 97%
8 AM 19° Haze 22% 2 mph ESE 95%
9 AM 21° Mostly Cloudy 28% 2 mph SSE 91%
10 AM 22° Mostly Cloudy 19% 2 mph SSW 87%
11 AM 23° Mostly Cloudy 28% 2 mph SW 83%
12 PM 24° Mostly Cloudy 29% 2 mph WSW 79%
1 PM 26° Mostly Cloudy 29% 3 mph WSW 76%
2 PM 28° Mostly Cloudy 29% 3 mph W 72%
3 PM 28° Partly Cloudy 30% 3 mph WSW 68%
4 PM 29° Partly Cloudy 30% 4 mph WSW 65%
15-Day Forecast
Today
8/21
Overcast
83%
19°
31°
Sat
8/22
Mostly Cloudy
36%
19°
31°
Sun
8/23
Clear
7%
19°
33°
Mon
8/24
Mostly Clear
45%
17°
33°
Tue
8/25
Rain
64%
17°
32°
Wed
8/26
Rain
70%
19°
33°
Thu
8/27
Rain
82%
22°
31°
Fri
8/28
Drizzle
53%
19°
34°
Sat
8/29
Rain
68%
21°
32°
Sun
8/30
Rain
68%
19°
34°
Mon
8/31
Drizzle
60%
22°
34°
Tue
9/1
Drizzle
60%
22°
36°
Wed
9/2
Drizzle
60%
22°
34°
Thu
9/3
Drizzle
60%
21°
34°
Fri
9/4
Drizzle
60%
21°
33°
37
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
31 AQI 5.5 µg/m³
O3
Ground-level ozone
Dominant
37 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 37 Good 37 31
Sun 58 Moderate 58 28
Mon 41 Good 41 36
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
SBCAPE2062 J/kg
MLCAPE1884 J/kg
MUCAPE2062 J/kg
SBCIN-1 J/kg
MLCIN-5 J/kg
Lifted Index-5.4
Kinematics
0–6 km Shear22 kt
0–1 km Shear1 kt
Eff. Shear21 kt
0–1 km SRH-3
0–3 km SRH83
Eff. SRH83
Storm Motion285° @ 17 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell1.9
K-Index40.3
Thermo & Levels
PWAT2.40 in
0–3 km LR6.9 °C/km
700–500 LR5.5 °C/km
Total Totals49.4
LCL905 hPa
LFC881 hPa
EL161 hPa
Freezing Lvl13,881 ft