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, Washington, MS, Humphreys, MS, Holmes, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS 7:00 p. m. 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, Washington, MS, Humphreys, MS, Holmes, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS 7:00 p. m.

Simpson County, Mississippi, United States

Last updated: 3:47 p. m. CDT  ·  Refresh
33°C
Feels like 39°
Partly Cloudy
▲ 34°  /  ▼ 23°
Wind
3 mph W
Humidity
58%
Dew Point
24°
Pressure
29,64 inHg
Visibility
10 mi
UV Index
7,2
Cloud Cover
36%
Sunrise
6:42 a. m.
Sunset
7:08 p. m.
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Simpson County is currently partly cloudy at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2862 J/kg) — isolated convective development possible. Sunrise: 6:42A. M. · Sunset: 7:08P. M..

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, Washington, MS, Humphreys, MS, Holmes, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS
Expires 7:00 p. m.
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, Washington, MS, Humphreys, MS, Holmes, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS
Expires 7:00 p. m.
29 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
35%
4 p. m.
32°
32%
5 p. m.
31°
31%
6 p. m.
29°
31%
7 p. m.
28°
30%
8 p. m.
28°
29%
9 p. m.
26°
23%
10 p. m.
26°
13%
11 p. m.
25°
8%
12 a. m.
24°
8%
1 a. m.
24°
8%
2 a. m.
24°
9%
3 a. m.
24°
9%
4 a. m.
24°
9%
5 a. m.
23°
9%
6 a. m.
23°
9%
7 a. m.
24°
9%
8 a. m.
26°
9%
9 a. m.
28°
10%
10 a. m.
31°
10%
11 a. m.
31°
10%
12 p. m.
32°
10%
1 p. m.
33°
10%
2 p. m.
33°
10%
7-Day Forecast
Today
34° 23°
Partly Cloudy with a 35% chance of rain.
Mon
37° 23°
Mostly Clear.
Tue
37° 23°
Partly Cloudy.
Wed
35° 23°
Mostly Cloudy.
Thu
36° 21°
Clear.
Fri
37° 21°
Clear with a 35% chance of rain.
Sat
37° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 33° Partly Cloudy 35% 3 mph W 58%
4 p. m. 32° Partly Cloudy 32% 4 mph WNW 67%
5 p. m. 31° Partly Cloudy 31% 5 mph NNW 74%
6 p. m. 29° Partly Cloudy 31% 3 mph NW 83%
7 p. m. 28° Partly Cloudy 30% 3 mph SSW 85%
8 p. m. 28° Partly Cloudy 29% 3 mph SSW 85%
9 p. m. 26° Mostly Cloudy 23% 4 mph SSW 86%
10 p. m. 26° Partly Cloudy 13% 4 mph S 87%
11 p. m. 25° Partly Cloudy 8% 3 mph SSW 88%
12 a. m. 24° Mostly Clear 8% 2 mph SSW 89%
1 a. m. 24° Mostly Clear 8% 2 mph SW 90%
2 a. m. 24° Mostly Clear 9% 2 mph SW 90%
3 a. m. 24° Clear 9% 3 mph WSW 90%
4 a. m. 24° Clear 9% 2 mph WSW 91%
5 a. m. 23° Clear 9% 2 mph SW 91%
6 a. m. 23° Clear 9% 2 mph WSW 92%
7 a. m. 24° Clear 9% 2 mph WSW 87%
8 a. m. 26° Clear 9% 2 mph WNW 79%
9 a. m. 28° Clear 10% 3 mph NW 72%
10 a. m. 31° Clear 10% 3 mph NW 68%
11 a. m. 31° Mostly Clear 10% 3 mph NW 63%
12 p. m. 32° Mostly Clear 10% 3 mph NW 59%
1 p. m. 33° Mostly Clear 10% 3 mph NW 58%
2 p. m. 33° Partly Cloudy 10% 3 mph WNW 57%
15-Day Forecast
Today
9/13
Partly Cloudy
35%
23°
34°
Mon
9/14
Mostly Clear
15%
23°
37°
Tue
9/15
Partly Cloudy
14%
23°
37°
Wed
9/16
Mostly Cloudy
11%
23°
35°
Thu
9/17
Clear
19%
21°
36°
Fri
9/18
Clear
35%
21°
37°
Sat
9/19
Clear
19%
21°
37°
Sun
9/20
Clear
60%
20°
35°
Mon
9/21
Drizzle
60%
19°
34°
Tue
9/22
Drizzle
60%
18°
33°
Wed
9/23
Drizzle
60%
14°
32°
Thu
9/24
Drizzle
60%
19°
31°
Fri
9/25
Drizzle
60%
18°
32°
Sat
9/26
Drizzle
60%
18°
31°
Sun
9/27
Clear
25%
18°
32°
29
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
25 AQI 4.5 µg/m³
O3
Ground-level ozone
Dominant
29 AQI 32 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 29 Good 29 25
Tue 34 Good 34 34
Wed 42 Good 36 42
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 dom. sept. 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
SBCAPE3616 J/kg
MLCAPE3272 J/kg
MUCAPE3809 J/kg
SBCIN-3 J/kg
MLCIN-13 J/kg
Lifted Index-6.4
Kinematics
0–6 km Shear4 kt
0–1 km Shear2 kt
Eff. Shear1 kt
0–1 km SRH-1
0–3 km SRH31
Eff. SRH31
Storm Motion75° @ 11 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.9
Thermo & Levels
PWAT2.19 in
0–3 km LR8.2 °C/km
700–500 LR4.7 °C/km
Total Totals47.0
LCL875 hPa
LFC866 hPa
EL134 hPa
Freezing Lvl16,365 ft