Heat Advisory — Clay, AR, Greene, AR, Craighead, AR, Poinsett, AR, Mississippi, AR, Cross, AR, Crittenden, AR, St. Francis, AR, Lee, AR, Phillips, AR, Dunklin, MO, Pemiscot, MO, DeSoto, MS, Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Tunica, MS, Tate, MS, Prentiss, MS, Coahoma, MS, Quitman, MS, Panola, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Tallahatchie, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Lake, TN, Obion, TN, Weakley, TN, Henry, TN, Dyer, TN, Gibson, TN, Carroll, TN, Benton, TN, Lauderdale, TN, Tipton, TN, Haywood, TN, Crockett, TN, Madison, TN, Chester, TN, Henderson, TN, Decatur, TN, Shelby, TN, Fayette, TN, Hardeman, TN, McNairy, TN, Hardin, TN 8:00 PM

Union County, Mississippi, United States

Last updated: 1:58 AM CDT  ·  Refresh
26°C
Feels like 27°
Clear
▲ 37°  /  ▼ 23°
Wind
4 mph SE
Humidity
69%
Dew Point
20°
Pressure
29.58 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
6:29 AM
Sunset
7:20 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1476 J/kg) — isolated convective development possible. Sunrise: 6:29AM · Sunset: 7:20PM.

Alerts

Heat Advisory
Clay, AR, Greene, AR, Craighead, AR, Poinsett, AR, Mississippi, AR, Cross, AR, Crittenden, AR, St. Francis, AR, Lee, AR, Phillips, AR, Dunklin, MO, Pemiscot, MO, DeSoto, MS, Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Tunica, MS, Tate, MS, Prentiss, MS, Coahoma, MS, Quitman, MS, Panola, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, MS, Tallahatchie, MS, Yalobusha, MS, Calhoun, MS, Chickasaw, MS, Monroe, MS, Lake, TN, Obion, TN, Weakley, TN, Henry, TN, Dyer, TN, Gibson, TN, Carroll, TN, Benton, TN, Lauderdale, TN, Tipton, TN, Haywood, TN, Crockett, TN, Madison, TN, Chester, TN, Henderson, TN, Decatur, TN, Shelby, TN, Fayette, TN, Hardeman, TN, McNairy, TN, Hardin, TN
Expires 8:00 PM
45 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
8%
2 AM
24°
8%
3 AM
24°
3%
4 AM
22°
3%
5 AM
22°
3%
6 AM
22°
3%
7 AM
24°
3%
8 AM
28°
3%
9 AM
31°
3%
10 AM
33°
3%
11 AM
34°
3%
12 PM
36°
3%
1 PM
36°
3%
2 PM
36°
3%
3 PM
36°
3%
4 PM
37°
3%
5 PM
36°
3%
6 PM
34°
3%
7 PM
33°
3%
8 PM
29°
3%
9 PM
29°
3%
10 PM
28°
3%
11 PM
28°
3%
12 AM
28°
3%
7-Day Forecast
Today
37° 23°
Mostly Clear.
Thu
39° 23°
Mostly Clear.
Fri
40° 23°
Mostly Clear.
Sat
38° 22°
Clear with a 51% chance of rain.
Sun
41° 20°
Clear with a 30% chance of rain.
Mon
40° 19°
Clear.
Tue
39° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 8% 4 mph SE 69%
2 AM 24° Clear 8% 4 mph SE 70%
3 AM 24° Clear 3% 4 mph SE 72%
4 AM 22° Clear 3% 4 mph SE 75%
5 AM 22° Clear 3% 3 mph SE 77%
6 AM 22° Clear 3% 3 mph SE 79%
7 AM 24° Clear 3% 2 mph SE 72%
8 AM 28° Clear 3% 2 mph S 64%
9 AM 31° Clear 3% 2 mph WSW 55%
10 AM 33° Clear 3% 1 mph WSW 48%
11 AM 34° Mostly Clear 3% 1 mph SE 42%
12 PM 36° Mostly Clear 3% 2 mph ESE 38%
1 PM 36° Mostly Clear 3% 3 mph SE 37%
2 PM 36° Mostly Clear 3% 3 mph SE 37%
3 PM 36° Mostly Clear 3% 4 mph SE 36%
4 PM 37° Mostly Clear 3% 4 mph SE 38%
5 PM 36° Mostly Clear 3% 4 mph SE 40%
6 PM 34° Mostly Clear 3% 4 mph SE 44%
7 PM 33° Mostly Clear 3% 4 mph SE 47%
8 PM 29° Clear 3% 4 mph SE 50%
9 PM 29° Clear 3% 5 mph SE 52%
10 PM 28° Clear 3% 4 mph SSE 54%
11 PM 28° Clear 3% 4 mph SSE 56%
12 AM 28° Clear 3% 4 mph SSE 58%
15-Day Forecast
Today
9/2
Mostly Clear
8%
23°
37°
Thu
9/3
Mostly Clear
6%
23°
39°
Fri
9/4
Mostly Clear
11%
23°
40°
Sat
9/5
Clear
51%
22°
38°
Sun
9/6
Clear
30%
20°
41°
Mon
9/7
Clear
17%
19°
40°
Tue
9/8
Clear
17%
21°
39°
Wed
9/9
Rain
68%
21°
39°
Thu
9/10
Rain
68%
22°
39°
Fri
9/11
Rain
68%
21°
39°
Sat
9/12
Clear
60%
21°
37°
Sun
9/13
Drizzle
60%
21°
38°
Mon
9/14
Drizzle
60%
21°
37°
Tue
9/15
Drizzle
60%
21°
37°
Wed
9/16
Drizzle
60%
20°
35°
45
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
45 AQI 8.2 µg/m³
O3
Ground-level ozone
44 AQI 49 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 45 Good 44 45
Thu 52 Moderate 45 52
Fri 68 Moderate 42 68
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Wed Sep 2, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE299 J/kg
MUCAPE698 J/kg
SBCIN—
MLCIN-329 J/kg
Lifted Index1.4
Kinematics
0–6 km Shear6 kt
0–1 km Shear13 kt
Eff. Shear17 kt
0–1 km SRH-51
0–3 km SRH-28
Eff. SRH20
Storm Motion121° @ 26 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index24.3
Thermo & Levels
PWAT1.59 in
0–3 km LR4.7 °C/km
700–500 LR5.7 °C/km
Total Totals42.2
LCL927 hPa
LFC—
EL—
Freezing Lvl16,729 ft