Heat Advisory — Pemiscot, MO, Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Prentiss, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, 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, Haywood, TN, Crockett, TN, Madison, TN, Chester, TN, Henderson, TN, Decatur, TN, Fayette, TN, Hardeman, TN, McNairy, TN, Hardin, TN 7:00 PM

Union County, Mississippi, United States

Last updated: 3:48 PM CDT  ·  Refresh
93°F
Feels like 100°
Mostly Clear
▲ 95°  /  ▼ 70°
Wind
5 mph WSW
Humidity
51%
Dew Point
71°
Pressure
29.52 inHg
Visibility
10 mi
UV Index
7.2
Cloud Cover
19%
Sunrise
6:37 AM
Sunset
7:05 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently mostly clear at 93°F. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1575 J/kg) — isolated convective development possible. Sunrise: 6:37AM · Sunset: 7:05PM.

Alerts

Heat Advisory
Pemiscot, MO, Marshall, MS, Benton, MS, Tippah, MS, Alcorn, MS, Tishomingo, MS, Prentiss, MS, Lafayette, MS, Union, MS, Pontotoc, MS, Lee, MS, Itawamba, 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, Haywood, TN, Crockett, TN, Madison, TN, Chester, TN, Henderson, TN, Decatur, TN, Fayette, TN, Hardeman, TN, McNairy, TN, Hardin, TN
Expires 7:00 PM
39 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
93°
35%
4 PM
90°
27%
5 PM
91°
37%
6 PM
87°
34%
7 PM
84°
8%
8 PM
82°
8%
9 PM
78°
8%
10 PM
78°
8%
11 PM
77°
8%
12 AM
76°
8%
1 AM
75°
12%
2 AM
74°
21%
3 AM
73°
5%
4 AM
73°
5%
5 AM
72°
5%
6 AM
71°
5%
7 AM
74°
5%
8 AM
77°
12%
9 AM
79°
12%
10 AM
83°
12%
11 AM
84°
10%
12 PM
86°
10%
1 PM
88°
10%
2 PM
89°
10%
7-Day Forecast
Today
95° 70°
Mostly Clear with a 35% chance of rain.
Mon
98° 71°
Mostly Clear.
Tue
101° 72°
Clear.
Wed
98° 73°
Mostly Clear.
Thu
100° 72°
Clear.
Fri
100° 71°
Drizzle, 60% chance.
Sat
98° 70°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 93° Mostly Clear 35% 5 mph WSW 51%
4 PM 90° Partly Cloudy 27% 5 mph WSW 58%
5 PM 91° Partly Cloudy 37% 4 mph WSW 62%
6 PM 87° Partly Cloudy 34% 5 mph ESE 70%
7 PM 84° Partly Cloudy 8% 3 mph E 72%
8 PM 82° Partly Cloudy 8% 2 mph WNW 72%
9 PM 78° Partly Cloudy 8% 4 mph W 72%
10 PM 78° Partly Cloudy 8% 4 mph W 74%
11 PM 77° Partly Cloudy 8% 4 mph SW 78%
12 AM 76° Mostly Cloudy 8% 4 mph ENE 81%
1 AM 75° Partly Cloudy 12% 2 mph NE 84%
2 AM 74° Partly Cloudy 21% 2 mph N 86%
3 AM 73° Partly Cloudy 5% 3 mph NNE 89%
4 AM 73° Partly Cloudy 5% 3 mph NNE 90%
5 AM 72° Mostly Clear 5% 3 mph NNE 91%
6 AM 71° Mostly Clear 5% 3 mph NNE 92%
7 AM 74° Mostly Clear 5% 2 mph NE 86%
8 AM 77° Mostly Clear 12% 2 mph NE 77%
9 AM 79° Clear 12% 2 mph ENE 69%
10 AM 83° Clear 12% 3 mph ENE 65%
11 AM 84° Clear 10% 3 mph ENE 60%
12 PM 86° Mostly Clear 10% 4 mph ENE 56%
1 PM 88° Mostly Clear 10% 4 mph ENE 54%
2 PM 89° Mostly Clear 10% 4 mph ENE 54%
15-Day Forecast
Today
9/13
Mostly Clear
35%
70°
95°
Mon
9/14
Mostly Clear
12%
71°
98°
Tue
9/15
Clear
3%
72°
101°
Wed
9/16
Mostly Clear
3%
73°
98°
Thu
9/17
Clear
9%
72°
100°
Fri
9/18
Drizzle
60%
71°
100°
Sat
9/19
Clear
9%
70°
98°
Sun
9/20
Drizzle
60%
68°
95°
Mon
9/21
Drizzle
60%
68°
93°
Tue
9/22
Drizzle
60%
59°
88°
Wed
9/23
Drizzle
60%
50°
86°
Thu
9/24
Clear
60%
64°
86°
Fri
9/25
Clear
25%
63°
87°
Sat
9/26
Clear
60%
63°
87°
Sun
9/27
Drizzle
60%
62°
88°
39
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
32 AQI 5.7 µg/m³
O3
Ground-level ozone
Dominant
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 39 Good 39 32
Tue 40 Good 40 37
Wed 54 Moderate 46 54
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 Sun Sep 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
SBCAPE2250 J/kg
MLCAPE1385 J/kg
MUCAPE2250 J/kg
SBCIN-38 J/kg
MLCIN-29 J/kg
Lifted Index-5.2
Kinematics
0–6 km Shear11 kt
0–1 km Shear3 kt
Eff. Shear6 kt
0–1 km SRH8
0–3 km SRH30
Eff. SRH30
Storm Motion32° @ 13 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.4
Thermo & Levels
PWAT1.79 in
0–3 km LR8.2 °C/km
700–500 LR5.3 °C/km
Total Totals47.1
LCL841 hPa
LFC804 hPa
EL143 hPa
Freezing Lvl15,620 ft