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: 2:42 PM CDT  ·  Refresh
38°C
Feels like 41°
Clear
▲ 38°  /  ▼ 22°
Wind
4 mph ENE
Humidity
36%
Dew Point
21°
Pressure
29,66 inHg
Visibility
10 mi
UV Index
8,7
Cloud Cover
2%
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 38°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1490 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
38°
5%
3 PM
38°
10%
4 PM
38°
10%
5 PM
38°
13%
6 PM
37°
25%
7 PM
33°
30%
8 PM
32°
29%
9 PM
29°
13%
10 PM
29°
10%
11 PM
28°
10%
12 AM
28°
5%
1 AM
27°
5%
2 AM
26°
5%
3 AM
26°
5%
4 AM
24°
3%
5 AM
22°
3%
6 AM
22°
3%
7 AM
23°
9%
8 AM
25°
20%
9 AM
31°
20%
10 AM
33°
21%
11 AM
33°
21%
12 PM
34°
21%
1 PM
37°
22%
7-Day Forecast
Today
38° 22°
Clear with a 29% chance of rain.
Tue
40° 22°
Mostly Clear with a 28% chance of rain.
Wed
39° 22°
Clear.
Thu
36° 23°
Mostly Cloudy with a 47% chance of rain.
Fri
37° 18°
Clear.
Sat
38° 19°
Clear.
Sun
38° 20°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 38° Clear 5% 4 mph ENE 36%
3 PM 38° Clear 10% 5 mph ENE 32%
4 PM 38° Clear 10% 4 mph ENE 34%
5 PM 38° Mostly Clear 13% 4 mph ENE 36%
6 PM 37° Mostly Clear 25% 4 mph E 39%
7 PM 33° Rain 30% 4 mph NE 42%
8 PM 32° Rain 29% 4 mph NE 46%
9 PM 29° Mostly Clear 13% 3 mph ENE 49%
10 PM 29° Clear 10% 3 mph E 52%
11 PM 28° Clear 10% 3 mph E 54%
12 AM 28° Clear 5% 4 mph E 56%
1 AM 27° Clear 5% 4 mph E 58%
2 AM 26° Clear 5% 3 mph E 62%
3 AM 26° Clear 5% 3 mph ENE 65%
4 AM 24° Clear 3% 3 mph E 67%
5 AM 22° Clear 3% 3 mph ENE 69%
6 AM 22° Clear 3% 3 mph ENE 71%
7 AM 23° Clear 9% 2 mph ENE 68%
8 AM 25° Clear 20% 2 mph E 61%
9 AM 31° Clear 20% 2 mph SSE 55%
10 AM 33° Clear 21% 3 mph SSE 51%
11 AM 33° Clear 21% 3 mph SSE 47%
12 PM 34° Clear 21% 4 mph SSE 43%
1 PM 37° Mostly Clear 22% 4 mph SE 42%
15-Day Forecast
Today
9/7
Clear
29%
22°
38°
Tue
9/8
Mostly Clear
28%
22°
40°
Wed
9/9
Clear
14%
22°
39°
Thu
9/10
Mostly Cloudy
47%
23°
36°
Fri
9/11
Clear
19%
18°
37°
Sat
9/12
Clear
19%
19°
38°
Sun
9/13
Clear
19%
20°
38°
Mon
9/14
Clear
60%
21°
38°
Tue
9/15
Drizzle
60%
21°
37°
Wed
9/16
Drizzle
60%
18°
37°
Thu
9/17
Drizzle
60%
15°
34°
Fri
9/18
Drizzle
60%
18°
33°
Sat
9/19
Clear
60%
18°
33°
Sun
9/20
Clear
60%
17°
32°
Mon
9/21
Drizzle
60%
17°
33°
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 lun. sept. 7, 18:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2250 J/kg
MLCAPE1423 J/kg
MUCAPE2250 J/kg
SBCIN0 J/kg
MLCIN-14 J/kg
Lifted Index-5.4
Kinematics
0–6 km Shear8 kt
0–1 km Shear1 kt
Eff. Shear10 kt
0–1 km SRH-6
0–3 km SRH-2
Eff. SRH-2
Storm Motion46° @ 20 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.0
Thermo & Levels
PWAT1.97 in
0–3 km LR9.0 °C/km
700–500 LR5.7 °C/km
Total Totals48.1
LCL785 hPa
LFC1004 hPa
EL161 hPa
Freezing Lvl15,558 ft