Extreme Heat Warning — Craighead, AR, Poinsett, AR, Mississippi, AR, Cross, AR, Crittenden, AR, St. Francis, AR, Lee, AR, Phillips, AR, DeSoto, MS, Marshall, MS, Benton, MS, Tunica, MS, Tate, MS, Coahoma, MS, Quitman, MS, Panola, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Tallahatchie, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Lauderdale, TN, Tipton, TN, Shelby, TN, Fayette, TN 8:00 PM

Union County, Mississippi, United States

Last updated: 12:35 AM CDT  ·  Refresh
28°C
Feels like 29°
Clear
▲ 38°  /  ▼ 22°
Wind
4 mph S
Humidity
63%
Dew Point
22°
Pressure
29.55 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
3%
Sunrise
6:18 AM
Sunset
7:41 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently clear at 28°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2558 J/kg) — isolated convective development possible. Sunrise: 6:18AM · Sunset: 7:41PM.

Alerts

Extreme Heat Warning
Craighead, AR, Poinsett, AR, Mississippi, AR, Cross, AR, Crittenden, AR, St. Francis, AR, Lee, AR, Phillips, AR, DeSoto, MS, Marshall, MS, Benton, MS, Tunica, MS, Tate, MS, Coahoma, MS, Quitman, MS, Panola, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Tallahatchie, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Lauderdale, TN, Tipton, TN, Shelby, TN, Fayette, TN
Expires 8:00 PM
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
4%
1 AM
27°
4%
2 AM
27°
4%
3 AM
26°
4%
4 AM
26°
4%
5 AM
24°
4%
6 AM
24°
4%
7 AM
26°
4%
8 AM
28°
9%
9 AM
31°
9%
10 AM
32°
8%
11 AM
33°
8%
12 PM
35°
15%
1 PM
37°
21%
2 PM
37°
21%
3 PM
37°
14%
4 PM
37°
26%
5 PM
37°
30%
6 PM
36°
31%
7 PM
34°
31%
8 PM
33°
31%
9 PM
29°
31%
10 PM
28°
21%
11 PM
28°
17%
7-Day Forecast
Today
38° 22°
Mostly Clear with a 31% chance of rain.
Tue
38° 22°
Clear.
Wed
41° 21°
Mostly Clear with a 59% chance of rain.
Thu
38° 22°
Rain, 64% chance.
Fri
35° 19°
Rain, 82% chance.
Sat
36° 19°
Thunderstorm, 70% chance.
Sun
37° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 28° Clear 4% 4 mph S 63%
1 AM 27° Clear 4% 5 mph SSW 64%
2 AM 27° Mostly Clear 4% 5 mph SSW 65%
3 AM 26° Mostly Clear 4% 6 mph SSW 67%
4 AM 26° Clear 4% 6 mph SW 69%
5 AM 24° Clear 4% 6 mph SW 71%
6 AM 24° Clear 4% 6 mph SW 73%
7 AM 26° Clear 4% 7 mph WSW 69%
8 AM 28° Clear 9% 8 mph WSW 61%
9 AM 31° Clear 9% 8 mph WSW 54%
10 AM 32° Clear 8% 9 mph W 48%
11 AM 33° Mostly Clear 8% 9 mph W 44%
12 PM 35° Partly Cloudy 15% 10 mph W 41%
1 PM 37° Mostly Clear 21% 10 mph WNW 39%
2 PM 37° Mostly Clear 21% 10 mph WNW 40%
3 PM 37° Mostly Clear 14% 9 mph WNW 41%
4 PM 37° Mostly Clear 26% 9 mph WNW 43%
5 PM 37° Mostly Clear 30% 8 mph NW 48%
6 PM 36° Mostly Clear 31% 8 mph NW 52%
7 PM 34° Mostly Clear 31% 8 mph NW 57%
8 PM 33° Mostly Clear 31% 7 mph NW 61%
9 PM 29° Mostly Clear 31% 7 mph NNW 66%
10 PM 28° Partly Cloudy 21% 7 mph NNW 68%
11 PM 28° Partly Cloudy 17% 6 mph NNW 70%
15-Day Forecast
Today
8/17
Mostly Clear
31%
22°
38°
Tue
8/18
Clear
9%
22°
38°
Wed
8/19
Mostly Clear
59%
21°
41°
Thu
8/20
Rain
64%
22°
38°
Fri
8/21
Rain
82%
19°
35°
Sat
8/22
Thunderstorm
70%
19°
36°
Sun
8/23
Clear
17%
21°
37°
Mon
8/24
Drizzle
42%
19°
35°
Tue
8/25
Rain
68%
20°
35°
Wed
8/26
Rain
77%
21°
36°
Thu
8/27
Drizzle
60%
22°
38°
Fri
8/28
Drizzle
60%
22°
37°
Sat
8/29
Drizzle
60%
21°
36°
Sun
8/30
Drizzle
60%
21°
36°
Mon
8/31
Drizzle
60%
22°
36°
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
33 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 49 Good 33 49
Tue 54 Moderate 35 54
Wed 53 Moderate 39 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 Mon Aug 17, 04:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE642 J/kg
MLCAPE450 J/kg
MUCAPE644 J/kg
SBCIN-312 J/kg
MLCIN-176 J/kg
Lifted Index-2.5
Kinematics
0–6 km Shear11 kt
0–1 km Shear22 kt
Eff. Shear12 kt
0–1 km SRH131
0–3 km SRH81
Eff. SRH-24
Storm Motion332° @ 16 kt
0–1 km EHI0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.9
Thermo & Levels
PWAT1.74 in
0–3 km LR5.8 °C/km
700–500 LR5.6 °C/km
Total Totals48.0
LCL918 hPa
LFC736 hPa
EL220 hPa
Freezing Lvl16,375 ft