Heat Advisory — Ashley, AR, Chicot, AR, Morehouse, LA, West Carroll, LA, East Carroll, LA, Richland, LA, Madison, LA, Franklin, LA, Catahoula, LA, Tensas, LA, Concordia, LA, Bolivar, MS, Sunflower, MS, Leflore, MS, Grenada, MS, Carroll, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Washington, MS, Humphreys, MS, Holmes, MS, Attala, MS, Winston, MS, Noxubee, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Leake, MS, Neshoba, MS, Kemper, MS, Warren, MS, Hinds, MS, Rankin, MS, Scott, MS, Newton, MS, Lauderdale, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Smith, MS, Jasper, MS, Clarke, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS 7:00 PM

Simpson County, Mississippi, United States

Last updated: 6:55 PM CDT  ·  Refresh
34°C
Feels like 38°
Mostly Clear
▲ 37°  /  ▼ 23°
Wind
5 mph SW
Humidity
47%
Dew Point
21°
Pressure
29.56 inHg
Visibility
10 mi
UV Index
2.6
Cloud Cover
12%
Sunrise
6:22 AM
Sunset
7:46 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Simpson County is currently mostly clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2406 J/kg) — isolated convective development possible. Sunrise: 6:22AM · Sunset: 7:46PM.

Alerts

Heat Advisory
Ashley, AR, Chicot, AR, Morehouse, LA, West Carroll, LA, East Carroll, LA, Richland, LA, Madison, LA, Franklin, LA, Catahoula, LA, Tensas, LA, Concordia, LA, Bolivar, MS, Sunflower, MS, Leflore, MS, Grenada, MS, Carroll, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Washington, MS, Humphreys, MS, Holmes, MS, Attala, MS, Winston, MS, Noxubee, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Leake, MS, Neshoba, MS, Kemper, MS, Warren, MS, Hinds, MS, Rankin, MS, Scott, MS, Newton, MS, Lauderdale, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Smith, MS, Jasper, MS, Clarke, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS
Expires 7:00 PM
30 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
9%
7 PM
33°
13%
8 PM
32°
10%
9 PM
29°
8%
10 PM
28°
8%
11 PM
27°
4%
12 AM
26°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
25°
3%
4 AM
24°
3%
5 AM
24°
3%
6 AM
24°
3%
7 AM
26°
3%
8 AM
27°
8%
9 AM
30°
8%
10 AM
31°
8%
11 AM
32°
8%
12 PM
33°
8%
1 PM
37°
13%
2 PM
37°
13%
3 PM
37°
13%
4 PM
37°
13%
5 PM
34°
8%
7-Day Forecast
Tonight
37° 23°
Mostly Clear.
Thu
39° 24°
Mostly Clear.
Fri
39° 23°
Mostly Clear.
Sat
40° 22°
Clear.
Sun
41° 24°
Mostly Clear.
Mon
39° 24°
Mostly Clear with a 21% chance of rain.
Tue
41° 23°
Partly Cloudy with a 34% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Clear 9% 5 mph SW 47%
7 PM 33° Mostly Clear 13% 4 mph SW 51%
8 PM 32° Clear 10% 4 mph SSW 55%
9 PM 29° Clear 8% 5 mph SSW 59%
10 PM 28° Clear 8% 5 mph SSW 64%
11 PM 27° Clear 4% 5 mph SSW 68%
12 AM 26° Clear 3% 5 mph SSW 72%
1 AM 26° Clear 3% 5 mph SSW 77%
2 AM 26° Clear 3% 6 mph SW 81%
3 AM 25° Clear 3% 6 mph SW 84%
4 AM 24° Mostly Clear 3% 6 mph SW 87%
5 AM 24° Clear 3% 5 mph SW 89%
6 AM 24° Clear 3% 5 mph WSW 91%
7 AM 26° Clear 3% 6 mph WSW 83%
8 AM 27° Clear 8% 7 mph WSW 74%
9 AM 30° Mostly Clear 8% 8 mph WSW 66%
10 AM 31° Mostly Clear 8% 8 mph WSW 60%
11 AM 32° Mostly Clear 8% 7 mph WSW 54%
12 PM 33° Mostly Clear 8% 7 mph WSW 48%
1 PM 37° Mostly Clear 13% 6 mph WSW 46%
2 PM 37° Mostly Clear 13% 6 mph SW 45%
3 PM 37° Mostly Clear 13% 6 mph SW 44%
4 PM 37° Mostly Clear 13% 6 mph SW 46%
5 PM 34° Mostly Clear 8% 6 mph SSW 49%
15-Day Forecast
Today
8/12
Mostly Clear
9%
23°
37°
Thu
8/13
Mostly Clear
8%
24°
39°
Fri
8/14
Mostly Clear
6%
23°
39°
Sat
8/15
Clear
13%
22°
40°
Sun
8/16
Mostly Clear
15%
24°
41°
Mon
8/17
Mostly Clear
21%
24°
39°
Tue
8/18
Partly Cloudy
34%
23°
41°
Wed
8/19
Partly Cloudy
34%
24°
41°
Thu
8/20
Drizzle
46%
22°
42°
Fri
8/21
Drizzle
53%
22°
42°
Sat
8/22
Drizzle
52%
23°
41°
Sun
8/23
Drizzle
60%
23°
40°
Mon
8/24
Drizzle
60%
23°
39°
Tue
8/25
Drizzle
60%
23°
39°
Wed
8/26
Drizzle
60%
22°
39°
30
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
27 AQI 4.9 µg/m³
O3
Ground-level ozone
Dominant
30 AQI 33 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 30 Good 30 27
Fri 21 Good 21 20
Sat 54 Moderate 29 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 Wed Aug 12, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1969 J/kg
MLCAPE1269 J/kg
MUCAPE1969 J/kg
SBCIN-71 J/kg
MLCIN0 J/kg
Lifted Index-3.7
Kinematics
0–6 km Shear9 kt
0–1 km Shear4 kt
Eff. Shear3 kt
0–1 km SRH18
0–3 km SRH29
Eff. SRH29
Storm Motion325° @ 16 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.9
Thermo & Levels
PWAT1.63 in
0–3 km LR8.1 °C/km
700–500 LR5.2 °C/km
Total Totals46.4
LCL829 hPa
LFC792 hPa
EL166 hPa
Freezing Lvl16,683 ft