Severe Thunderstorm Watch 8:00 PM Severe Thunderstorm Watch 8:00 PM Areal Flood Advisory — Cabarrus County, NC, Mecklenburg County, NC, Union County, NC 7:15 PM Areal Flood Advisory — Mecklenburg County, NC, Union County, NC 9:45 PM

Union County, North Carolina, United States

Last updated: 6:33 PM CDT  ·  Refresh
23°C
Feels like 27°
Rain
▲ 31°  /  ▼ 19°
Wind
5 mph NE
Humidity
91%
Dew Point
22°
Pressure
29.41 inHg
Visibility
4 mi
UV Index
0.6
Cloud Cover
95%
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 rain at 23°C. Precipitation is likely — peak probability 77% around 7 PM. Atmospheric instability is elevated (CAPE up to 1149 J/kg) — isolated convective development possible. Sunrise: 6:46AM · Sunset: 8:02PM.

Alerts

Severe Thunderstorm Watch
Expires 8:00 PM
Severe Thunderstorm Watch
Expires 8:00 PM
Areal Flood Advisory
Cabarrus County, NC, Mecklenburg County, NC, Union County, NC
Expires 7:15 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
23°
76%
8 PM
24°
70%
9 PM
23°
69%
10 PM
22°
67%
11 PM
22°
59%
12 AM
22°
47%
1 AM
22°
60%
2 AM
21°
32%
3 AM
21°
32%
4 AM
21°
32%
5 AM
19°
32%
6 AM
19°
26%
7 AM
19°
24%
8 AM
20°
21%
9 AM
22°
29%
10 AM
23°
30%
11 AM
24°
30%
12 PM
24°
18%
1 PM
27°
18%
2 PM
28°
20%
3 PM
28°
21%
4 PM
28°
21%
5 PM
28°
21%
6 PM
28°
24%
7-Day Forecast
Tonight
31° 19°
Rain, 76% chance.
Sat
31° 19°
Mostly Cloudy with a 60% chance of rain.
Sun
32° 19°
Mostly Clear.
Mon
31° 18°
Clear with a 53% chance of rain.
Tue
31° 17°
Clear with a 45% chance of rain.
Wed
31° 19°
Heavy Rain, 83% chance.
Thu
30° 19°
Rain, 90% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Rain 76% 5 mph NE 91%
8 PM 24° Overcast 70% 6 mph ENE 94%
9 PM 23° Overcast 69% 6 mph E 95%
10 PM 22° Overcast 67% 6 mph ESE 96%
11 PM 22° Overcast 59% 5 mph SE 96%
12 AM 22° Mostly Cloudy 47% 4 mph SSE 96%
1 AM 22° Mostly Cloudy 60% 3 mph S 96%
2 AM 21° Mostly Cloudy 32% 3 mph SW 96%
3 AM 21° Mostly Cloudy 32% 3 mph SW 96%
4 AM 21° Mostly Cloudy 32% 3 mph WSW 97%
5 AM 19° Mostly Cloudy 32% 3 mph WSW 96%
6 AM 19° Mostly Cloudy 26% 2 mph NW 96%
7 AM 19° Rain 24% 3 mph ENE 96%
8 AM 20° Rain 21% 3 mph ENE 93%
9 AM 22° Rain 29% 2 mph WNW 88%
10 AM 23° Mostly Cloudy 30% 2 mph W 83%
11 AM 24° Mostly Cloudy 30% 2 mph W 79%
12 PM 24° Mostly Cloudy 18% 3 mph W 74%
1 PM 27° Mostly Cloudy 18% 3 mph W 69%
2 PM 28° Mostly Cloudy 20% 3 mph W 66%
3 PM 28° Partly Cloudy 21% 4 mph W 63%
4 PM 28° Partly Cloudy 21% 4 mph W 60%
5 PM 28° Partly Cloudy 21% 4 mph WSW 60%
6 PM 28° Mostly Clear 24% 4 mph WSW 63%
15-Day Forecast
Today
8/21
Rain
76%
19°
31°
Sat
8/22
Mostly Cloudy
60%
19°
31°
Sun
8/23
Mostly Clear
12%
19°
32°
Mon
8/24
Clear
53%
18°
31°
Tue
8/25
Clear
45%
17°
31°
Wed
8/26
Heavy Rain
83%
19°
31°
Thu
8/27
Rain
90%
19°
30°
Fri
8/28
Rain
66%
22°
32°
Sat
8/29
Rain
73%
19°
32°
Sun
8/30
Drizzle
54%
19°
33°
Mon
8/31
Drizzle
56%
19°
38°
Tue
9/1
Drizzle
60%
22°
36°
Wed
9/2
Drizzle
60%
22°
32°
Thu
9/3
Drizzle
60%
21°
32°
Fri
9/4
Rain
90%
21°
32°
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, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE491 J/kg
MLCAPE823 J/kg
MUCAPE1585 J/kg
SBCIN-86 J/kg
MLCIN-41 J/kg
Lifted Index-2.8
Kinematics
0–6 km Shear21 kt
0–1 km Shear10 kt
Eff. Shear20 kt
0–1 km SRH54
0–3 km SRH116
Eff. SRH116
Storm Motion276° @ 21 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell1.9
K-Index37.7
Thermo & Levels
PWAT2.27 in
0–3 km LR5.2 °C/km
700–500 LR5.3 °C/km
Total Totals48.3
LCL977 hPa
LFC766 hPa
EL328 hPa
Freezing Lvl13,865 ft