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: 3:48 PM CDT  ·  Refresh
37°C
Feels like 40°
Partly Cloudy
▲ 37°  /  ▼ 22°
Wind
5 mph W
Humidity
41%
Dew Point
21°
Pressure
29,71 inHg
Visibility
10 mi
UV Index
6,8
Cloud Cover
51%
Sunrise
6:52 AM
Sunset
7:19 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently partly cloudy at 36°C. Precipitation is likely — peak probability 51% around 3 PM. Atmospheric instability is elevated (CAPE up to 2233 J/kg) — isolated convective development possible. Sunrise: 6:52AM · Sunset: 7:19PM.

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
43 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
37°
23%
4 PM
36°
40%
5 PM
36°
39%
6 PM
33°
39%
7 PM
32°
38%
8 PM
30°
37%
9 PM
27°
31%
10 PM
27°
16%
11 PM
26°
26%
12 AM
26°
8%
1 AM
25°
8%
2 AM
24°
9%
3 AM
24°
9%
4 AM
24°
9%
5 AM
23°
9%
6 AM
23°
5%
7 AM
23°
12%
8 AM
25°
22%
9 AM
27°
23%
10 AM
29°
30%
11 AM
31°
30%
12 PM
32°
31%
1 PM
35°
34%
2 PM
34°
44%
7-Day Forecast
Today
37° 22°
Partly Cloudy with a 39% chance of rain.
Mon
40° 23°
Rain, 50% chance.
Tue
38° 23°
Clear with a 31% chance of rain.
Wed
37° 24°
Partly Cloudy.
Thu
39° 23°
Clear.
Fri
39° 22°
Clear.
Sat
39° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 37° Partly Cloudy 23% 5 mph W 41%
4 PM 36° Partly Cloudy 40% 3 mph NNW 47%
5 PM 36° Partly Cloudy 39% 4 mph N 56%
6 PM 33° Partly Cloudy 39% 6 mph N 65%
7 PM 32° Partly Cloudy 38% 4 mph N 67%
8 PM 30° Partly Cloudy 37% 2 mph ENE 68%
9 PM 27° Partly Cloudy 31% 4 mph SSE 70%
10 PM 27° Partly Cloudy 16% 4 mph SSE 71%
11 PM 26° Partly Cloudy 26% 4 mph S 74%
12 AM 26° Mostly Cloudy 8% 3 mph S 77%
1 AM 25° Partly Cloudy 8% 3 mph SW 78%
2 AM 24° Partly Cloudy 9% 3 mph WSW 77%
3 AM 24° Mostly Cloudy 9% 3 mph WSW 77%
4 AM 24° Mostly Cloudy 9% 3 mph WSW 78%
5 AM 23° Partly Cloudy 9% 3 mph WSW 80%
6 AM 23° Partly Cloudy 5% 3 mph WSW 81%
7 AM 23° Partly Cloudy 12% 3 mph WSW 78%
8 AM 25° Mostly Clear 22% 4 mph W 73%
9 AM 27° Mostly Clear 23% 5 mph W 68%
10 AM 29° Mostly Clear 30% 5 mph W 64%
11 AM 31° Mostly Clear 30% 4 mph W 60%
12 PM 32° Mostly Clear 31% 4 mph W 56%
1 PM 35° Mostly Clear 34% 3 mph W 55%
2 PM 34° Partly Cloudy 44% 3 mph WSW 56%
15-Day Forecast
Today
9/13
Partly Cloudy
39%
22°
37°
Mon
9/14
Rain
50%
23°
40°
Tue
9/15
Clear
31%
23°
38°
Wed
9/16
Partly Cloudy
16%
24°
37°
Thu
9/17
Clear
9%
23°
39°
Fri
9/18
Clear
9%
22°
39°
Sat
9/19
Clear
19%
23°
39°
Sun
9/20
Clear
60%
20°
36°
Mon
9/21
Drizzle
60%
19°
35°
Tue
9/22
Drizzle
60%
16°
33°
Wed
9/23
Drizzle
60%
13°
32°
Thu
9/24
Drizzle
60%
19°
33°
Fri
9/25
Drizzle
60%
18°
33°
Sat
9/26
Drizzle
60%
18°
33°
Sun
9/27
Clear
25%
18°
33°
43
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
43 AQI 7.8 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 43 Good 34 43
Tue 35 Good 35 33
Wed 39 Good 39 37
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 dim. sept. 13, 19:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2497 J/kg
MLCAPE1633 J/kg
MUCAPE2497 J/kg
SBCIN0 J/kg
MLCIN-11 J/kg
Lifted Index-6.1
Kinematics
0–6 km Shear7 kt
0–1 km Shear1 kt
Eff. Shear7 kt
0–1 km SRH-2
0–3 km SRH-10
Eff. SRH-10
Storm Motion131° @ 13 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index37.2
Thermo & Levels
PWAT2.00 in
0–3 km LR8.7 °C/km
700–500 LR5.8 °C/km
Total Totals49.6
LCL809 hPa
LFC1006 hPa
EL145 hPa
Freezing Lvl15,617 ft