Extreme Heat Warning — Sevier, AR, Howard, AR, Little River, AR, Hempstead, AR, Nevada, AR, Miller, AR, Lafayette, AR, Columbia, AR, Union, AR, Claiborne, LA, Lincoln, LA, Union, LA, Jackson, LA, Ouachita, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, McCurtain, OK, Red River, TX, Bowie, TX 8:00 PM

Union County, Arkansas, United States

Last updated: 11:14 AM CDT  ·  Refresh
34°C
Feels like 39°
Mostly Clear
▲ 38°  /  ▼ 24°
Wind
5 mph NW
Humidity
53%
Dew Point
24°
Pressure
29.64 inHg
Visibility
10 mi
UV Index
9.1
Cloud Cover
16%
Sunrise
6:16 AM
Sunset
8:17 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently mostly clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2491 J/kg) — isolated convective development possible. Sunrise: 6:16AM · Sunset: 8:17PM.

Alerts

Extreme Heat Warning
Sevier, AR, Howard, AR, Little River, AR, Hempstead, AR, Nevada, AR, Miller, AR, Lafayette, AR, Columbia, AR, Union, AR, Claiborne, LA, Lincoln, LA, Union, LA, Jackson, LA, Ouachita, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, McCurtain, OK, Red River, TX, Bowie, TX
Expires 8:00 PM
66 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
4%
12 PM
34°
3%
1 PM
37°
3%
2 PM
37°
3%
3 PM
37°
3%
4 PM
37°
3%
5 PM
36°
3%
6 PM
35°
3%
7 PM
34°
3%
8 PM
32°
3%
9 PM
29°
3%
10 PM
28°
3%
11 PM
28°
6%
12 AM
28°
6%
1 AM
27°
11%
2 AM
27°
6%
3 AM
26°
5%
4 AM
26°
3%
5 AM
24°
3%
6 AM
24°
3%
7 AM
24°
3%
8 AM
26°
3%
9 AM
28°
3%
10 AM
29°
3%
7-Day Forecast
Today
38° 24°
Partly Cloudy.
Wed
37° 24°
Mostly Clear.
Thu
35° 22°
Partly Cloudy with a 20% chance of rain.
Fri
34° 23°
Partly Cloudy with a 31% chance of rain.
Sat
36° 24°
Clear.
Sun
37° 24°
Clear.
Mon
38° 24°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Clear 4% 5 mph NW 53%
12 PM 34° Partly Cloudy 3% 6 mph NNW 48%
1 PM 37° Partly Cloudy 3% 5 mph NW 46%
2 PM 37° Partly Cloudy 3% 4 mph NNW 46%
3 PM 37° Partly Cloudy 3% 4 mph NNW 46%
4 PM 37° Partly Cloudy 3% 4 mph NNW 47%
5 PM 36° Partly Cloudy 3% 4 mph NNW 50%
6 PM 35° Mostly Cloudy 3% 4 mph NNW 52%
7 PM 34° Mostly Cloudy 3% 3 mph E 56%
8 PM 32° Mostly Cloudy 3% 4 mph SE 61%
9 PM 29° Mostly Cloudy 3% 4 mph SE 66%
10 PM 28° Partly Cloudy 3% 4 mph SSE 72%
11 PM 28° Partly Cloudy 6% 3 mph S 74%
12 AM 28° Partly Cloudy 6% 3 mph SSW 75%
1 AM 27° Partly Cloudy 11% 3 mph SSW 76%
2 AM 27° Partly Cloudy 6% 3 mph SSW 78%
3 AM 26° Partly Cloudy 5% 4 mph S 80%
4 AM 26° Partly Cloudy 3% 4 mph SE 82%
5 AM 24° Partly Cloudy 3% 3 mph ENE 82%
6 AM 24° Partly Cloudy 3% 4 mph NE 83%
7 AM 24° Partly Cloudy 3% 5 mph NE 83%
8 AM 26° Partly Cloudy 3% 5 mph NE 80%
9 AM 28° Partly Cloudy 3% 5 mph NE 76%
10 AM 29° Mostly Clear 3% 6 mph NE 72%
15-Day Forecast
Today
7/21
Partly Cloudy
6%
24°
38°
Wed
7/22
Mostly Clear
6%
24°
37°
Thu
7/23
Partly Cloudy
20%
22°
35°
Fri
7/24
Partly Cloudy
31%
23°
34°
Sat
7/25
Clear
16%
24°
36°
Sun
7/26
Clear
17%
24°
37°
Mon
7/27
Clear
8%
24°
38°
Tue
7/28
Drizzle
43%
24°
41°
Wed
7/29
Clear
43%
25°
40°
Thu
7/30
Drizzle
44%
24°
40°
Fri
7/31
Clear
25%
25°
39°
Sat
8/1
Drizzle
60%
24°
39°
Sun
8/2
Drizzle
60%
24°
38°
Mon
8/3
Drizzle
60%
23°
37°
Tue
8/4
Drizzle
60%
23°
37°
66
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
66 AQI 17.1 µg/m³
O3
Ground-level ozone
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 66 Moderate 31 66
Thu 55 Moderate 36 55
Fri 53 Moderate 33 53
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 Tue Jul 21, 14:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2898 J/kg
MLCAPE1877 J/kg
MUCAPE2898 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.5
Kinematics
0–6 km Shear15 kt
0–1 km Shear5 kt
Eff. Shear18 kt
0–1 km SRH-2
0–3 km SRH-22
Eff. SRH-22
Storm Motion334° @ 23 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index37.7
Thermo & Levels
PWAT2.13 in
0–3 km LR7.4 °C/km
700–500 LR4.9 °C/km
Total Totals44.0
LCL871 hPa
LFC1004 hPa
EL131 hPa
Freezing Lvl17,789 ft