Union County, Arkansas, United States

Last updated: 2:57 PM CDT  ·  Refresh
37°C
Feels like 44°
Partly Cloudy
▲ 38°  /  ▼ 24°
Wind
4 mph NW
Humidity
46%
Dew Point
23°
Pressure
29.59 inHg
Visibility
10 mi
UV Index
8.9
Cloud Cover
37%
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 partly cloudy at 37°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2316 J/kg) — isolated convective development possible. Sunrise: 6:16AM · Sunset: 8:17PM.

Alerts

No active alerts for this location.
65 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
37°
3%
3 PM
37°
3%
4 PM
37°
5%
5 PM
36°
5%
6 PM
35°
5%
7 PM
33°
5%
8 PM
32°
5%
9 PM
29°
5%
10 PM
29°
9%
11 PM
28°
9%
12 AM
28°
14%
1 AM
27°
8%
2 AM
27°
8%
3 AM
26°
3%
4 AM
26°
3%
5 AM
24°
3%
6 AM
24°
3%
7 AM
25°
3%
8 AM
26°
3%
9 AM
29°
3%
10 AM
30°
3%
11 AM
31°
3%
12 PM
32°
3%
1 PM
34°
3%
7-Day Forecast
Today
38° 24°
Partly Cloudy.
Wed
38° 24°
Mostly Clear.
Thu
34° 23°
Mostly Clear with a 23% chance of rain.
Fri
34° 24°
Partly Cloudy with a 44% chance of rain.
Sat
37° 24°
Drizzle, 50% chance.
Sun
38° 24°
Clear.
Mon
39° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 37° Partly Cloudy 3% 4 mph NW 46%
3 PM 37° Partly Cloudy 3% 4 mph NNW 46%
4 PM 37° Partly Cloudy 5% 5 mph NNW 49%
5 PM 36° Partly Cloudy 5% 5 mph NW 52%
6 PM 35° Partly Cloudy 5% 5 mph NW 56%
7 PM 33° Partly Cloudy 5% 4 mph W 60%
8 PM 32° Partly Cloudy 5% 4 mph ESE 62%
9 PM 29° Mostly Clear 5% 3 mph SE 67%
10 PM 29° Mostly Clear 9% 3 mph SSE 70%
11 PM 28° Mostly Clear 9% 3 mph SSW 72%
12 AM 28° Mostly Clear 14% 3 mph SW 74%
1 AM 27° Mostly Clear 8% 3 mph S 77%
2 AM 27° Partly Cloudy 8% 3 mph S 79%
3 AM 26° Partly Cloudy 3% 4 mph SSE 81%
4 AM 26° Partly Cloudy 3% 3 mph SE 82%
5 AM 24° Partly Cloudy 3% 3 mph E 83%
6 AM 24° Partly Cloudy 3% 4 mph NE 84%
7 AM 25° Partly Cloudy 3% 5 mph NE 78%
8 AM 26° Partly Cloudy 3% 6 mph ENE 76%
9 AM 29° Partly Cloudy 3% 6 mph ENE 73%
10 AM 30° Mostly Clear 3% 7 mph NE 68%
11 AM 31° Mostly Clear 3% 7 mph NE 63%
12 PM 32° Clear 3% 8 mph NE 58%
1 PM 34° Clear 3% 8 mph NE 56%
15-Day Forecast
Today
7/21
Partly Cloudy
9%
24°
38°
Wed
7/22
Mostly Clear
8%
24°
38°
Thu
7/23
Mostly Clear
23%
23°
34°
Fri
7/24
Partly Cloudy
44%
24°
34°
Sat
7/25
Drizzle
50%
24°
37°
Sun
7/26
Clear
19%
24°
38°
Mon
7/27
Clear
9%
23°
39°
Tue
7/28
Clear
25%
24°
39°
Wed
7/29
Drizzle
60%
24°
39°
Thu
7/30
Drizzle
60%
24°
39°
Fri
7/31
Drizzle
42%
23°
37°
Sat
8/1
Drizzle
60%
24°
37°
Sun
8/2
Drizzle
60%
23°
37°
Mon
8/3
Clear
25%
24°
37°
Tue
8/4
Drizzle
60%
23°
37°
65
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
65 AQI 16.5 µg/m³
O3
Ground-level ozone
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 65 Moderate 31 65
Thu 54 Moderate 37 54
Fri 53 Moderate 37 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, 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
SBCAPE2987 J/kg
MLCAPE2529 J/kg
MUCAPE2987 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.7
Kinematics
0–6 km Shear12 kt
0–1 km Shear4 kt
Eff. Shear14 kt
0–1 km SRH-7
0–3 km SRH-43
Eff. SRH-43
Storm Motion336° @ 22 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.4
Thermo & Levels
PWAT2.07 in
0–3 km LR8.4 °C/km
700–500 LR4.9 °C/km
Total Totals44.0
LCL822 hPa
LFC1002 hPa
EL133 hPa
Freezing Lvl17,904 ft