Heat Advisory — Sevier, AR, Howard, AR, Little River, AR, Hempstead, AR, Nevada, AR, Miller, AR, Lafayette, AR, Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, McCurtain, OK, Red River, TX, Bowie, TX, Franklin, TX, Titus, TX, Camp, TX, Morris, TX, Cass, TX, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX 7:00 PM Heat Advisory — Sevier, AR, Howard, AR, Little River, AR, Hempstead, AR, Nevada, AR, Miller, AR, Lafayette, AR, Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, McCurtain, OK, Red River, TX, Bowie, TX, Franklin, TX, Titus, TX, Camp, TX, Morris, TX, Cass, TX, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX 7:00 PM

Union County, Arkansas, United States

Last updated: 12:58 PM CDT  ·  Refresh
36°C
Feels like 39°
Clear
▲ 38°  /  ▼ 22°
Wind
3 mph ENE
Humidity
40%
Dew Point
22°
Pressure
29.69 inHg
Visibility
10 mi
UV Index
9.2
Cloud Cover
0%
Sunrise
6:48 AM
Sunset
7:27 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently clear at 36°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1684 J/kg) — isolated convective development possible. Sunrise: 6:48AM · Sunset: 7:27PM.

Alerts

Heat Advisory
Sevier, AR, Howard, AR, Little River, AR, Hempstead, AR, Nevada, AR, Miller, AR, Lafayette, AR, Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, McCurtain, OK, Red River, TX, Bowie, TX, Franklin, TX, Titus, TX, Camp, TX, Morris, TX, Cass, TX, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX
Expires 7:00 PM
Heat Advisory
Sevier, AR, Howard, AR, Little River, AR, Hempstead, AR, Nevada, AR, Miller, AR, Lafayette, AR, Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, McCurtain, OK, Red River, TX, Bowie, TX, Franklin, TX, Titus, TX, Camp, TX, Morris, TX, Cass, TX, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX
Expires 7:00 PM
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
36°
3%
1 PM
38°
10%
2 PM
38°
10%
3 PM
38°
10%
4 PM
38°
13%
5 PM
37°
30%
6 PM
34°
29%
7 PM
33°
29%
8 PM
32°
29%
9 PM
29°
14%
10 PM
29°
10%
11 PM
29°
5%
12 AM
28°
5%
1 AM
27°
5%
2 AM
26°
5%
3 AM
26°
5%
4 AM
25°
5%
5 AM
23°
5%
6 AM
22°
5%
7 AM
24°
12%
8 AM
26°
23%
9 AM
31°
21%
10 AM
32°
21%
11 AM
33°
22%
7-Day Forecast
Today
38° 22°
Mostly Clear with a 29% chance of rain.
Tue
41° 22°
Clear with a 25% chance of rain.
Wed
39° 22°
Mostly Clear.
Thu
36° 23°
Mostly Cloudy with a 47% chance of rain.
Fri
38° 18°
Clear.
Sat
38° 19°
Clear.
Sun
38° 20°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 36° Clear 3% 3 mph ENE 40%
1 PM 38° Clear 10% 5 mph ENE 35%
2 PM 38° Clear 10% 5 mph ENE 34%
3 PM 38° Mostly Clear 10% 5 mph NE 33%
4 PM 38° Mostly Clear 13% 5 mph ENE 35%
5 PM 37° Mostly Clear 30% 5 mph ENE 37%
6 PM 34° Rain 29% 8 mph SSW 40%
7 PM 33° Rain 29% 4 mph ENE 43%
8 PM 32° Rain 29% 4 mph ENE 46%
9 PM 29° Mostly Clear 14% 3 mph E 50%
10 PM 29° Clear 10% 3 mph E 52%
11 PM 29° Clear 5% 4 mph ENE 54%
12 AM 28° Clear 5% 4 mph E 56%
1 AM 27° Clear 5% 4 mph E 59%
2 AM 26° Clear 5% 3 mph E 62%
3 AM 26° Clear 5% 3 mph E 65%
4 AM 25° Clear 5% 3 mph ENE 67%
5 AM 23° Clear 5% 3 mph E 70%
6 AM 22° Clear 5% 2 mph E 72%
7 AM 24° Clear 12% 2 mph E 68%
8 AM 26° Clear 23% 2 mph ESE 64%
9 AM 31° Clear 21% 3 mph SE 59%
10 AM 32° Clear 21% 3 mph SE 56%
11 AM 33° Clear 22% 3 mph SE 52%
15-Day Forecast
Today
9/7
Mostly Clear
29%
22°
38°
Tue
9/8
Clear
25%
22°
41°
Wed
9/9
Mostly Clear
14%
22°
39°
Thu
9/10
Mostly Cloudy
47%
23°
36°
Fri
9/11
Clear
19%
18°
38°
Sat
9/12
Clear
19%
19°
38°
Sun
9/13
Clear
19%
20°
38°
Mon
9/14
Drizzle
60%
20°
38°
Tue
9/15
Drizzle
60%
22°
38°
Wed
9/16
Drizzle
60%
18°
37°
Thu
9/17
Drizzle
60%
15°
36°
Fri
9/18
Drizzle
60%
20°
34°
Sat
9/19
Drizzle
60%
19°
34°
Sun
9/20
Drizzle
60%
19°
34°
Mon
9/21
Drizzle
60%
19°
34°
49
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
49 AQI 8.9 µg/m³
O3
Ground-level ozone
44 AQI 48 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 49 Good 44 49
Wed 52 Moderate 39 52
Thu 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 Mon Sep 7, 16:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2312 J/kg
MLCAPE1699 J/kg
MUCAPE2312 J/kg
SBCIN-12 J/kg
MLCIN-62 J/kg
Lifted Index-5.6
Kinematics
0–6 km Shear9 kt
0–1 km Shear2 kt
Eff. Shear7 kt
0–1 km SRH0
0–3 km SRH-4
Eff. SRH-4
Storm Motion59° @ 20 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.8
Thermo & Levels
PWAT1.99 in
0–3 km LR8.3 °C/km
700–500 LR5.7 °C/km
Total Totals46.5
LCL818 hPa
LFC784 hPa
EL157 hPa
Freezing Lvl15,430 ft