Excessive Heat Warning — 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, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Attala, MS, Winston, MS, Noxubee, MS, Leake, MS, Neshoba, MS, Kemper, MS, Scott, MS, Newton, MS, Lauderdale, MS, Smith, MS, Jasper, MS, Clarke, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS 9:00 PM Heat Advisory — Bolivar, MS, Sunflower, MS, Leflore, 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, Grenada, MS, Carroll, MS, Leake, MS, Scott, MS, Newton, MS, Smith, MS, Jasper, MS, Clarke, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Attala, MS, Winston, MS, Noxubee, MS, Neshoba, MS, Kemper, MS, Lauderdale, MS 7:00 PM

Simpson County, Mississippi, United States

Last updated: 5:17 PM CDT  ·  Refresh
35°C
Feels like 43°
Partly Cloudy
▲ 37°  /  ▼ 24°
Wind
6 mph WSW
Humidity
54%
Dew Point
22°
Pressure
29.50 inHg
Visibility
10 mi
UV Index
5.5
Cloud Cover
55%
Sunrise
6:13 AM
Sunset
7:58 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Simpson County is currently partly cloudy at 35°C. Precipitation is likely — peak probability 64% around 4 PM. Atmospheric instability is elevated (CAPE up to 2357 J/kg) — isolated convective development possible. Sunrise: 6:13AM · Sunset: 7:58PM.

Alerts

Excessive Heat Warning
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, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Attala, MS, Winston, MS, Noxubee, MS, Leake, MS, Neshoba, MS, Kemper, MS, Scott, MS, Newton, MS, Lauderdale, MS, Smith, MS, Jasper, MS, Clarke, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS
Expires 9:00 PM
Heat Advisory
Bolivar, MS, Sunflower, MS, Leflore, 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, Grenada, MS, Carroll, MS, Leake, MS, Scott, MS, Newton, MS, Smith, MS, Jasper, MS, Clarke, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Attala, MS, Winston, MS, Noxubee, MS, Neshoba, MS, Kemper, MS, Lauderdale, MS
Expires 7:00 PM
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
35°
26%
6 PM
34°
34%
7 PM
33°
47%
8 PM
32°
44%
9 PM
28°
39%
10 PM
28°
43%
11 PM
27°
43%
12 AM
27°
29%
1 AM
26°
23%
2 AM
26°
25%
3 AM
25°
26%
4 AM
25°
23%
5 AM
24°
27%
6 AM
24°
27%
7 AM
24°
30%
8 AM
27°
35%
9 AM
29°
47%
10 AM
30°
55%
11 AM
31°
62%
12 PM
33°
62%
1 PM
34°
62%
2 PM
33°
63%
3 PM
33°
63%
4 PM
32°
63%
7-Day Forecast
Today
37° 24°
Partly Cloudy with a 44% chance of rain.
Thu
37° 24°
Partly Cloudy with a 62% chance of rain.
Fri
34° 23°
Mostly Cloudy with a 69% chance of rain.
Sat
33° 23°
Mostly Cloudy with a 66% chance of rain.
Sun
33° 21°
Mostly Cloudy with a 41% chance of rain.
Mon
34° 20°
Clear with a 38% chance of rain.
Tue
36° 21°
Clear with a 20% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 35° Partly Cloudy 26% 6 mph WSW 54%
6 PM 34° Mostly Cloudy 34% 7 mph WSW 61%
7 PM 33° Mostly Cloudy 47% 7 mph WSW 66%
8 PM 32° Mostly Cloudy 44% 5 mph WSW 67%
9 PM 28° Mostly Cloudy 39% 3 mph WSW 68%
10 PM 28° Mostly Cloudy 43% 3 mph NE 71%
11 PM 27° Mostly Cloudy 43% 3 mph S 73%
12 AM 27° Partly Cloudy 29% 2 mph WSW 75%
1 AM 26° Partly Cloudy 23% 3 mph WSW 76%
2 AM 26° Partly Cloudy 25% 3 mph WSW 78%
3 AM 25° Partly Cloudy 26% 3 mph SW 79%
4 AM 25° Partly Cloudy 23% 3 mph SW 80%
5 AM 24° Partly Cloudy 27% 3 mph SW 81%
6 AM 24° Partly Cloudy 27% 3 mph SW 82%
7 AM 24° Partly Cloudy 30% 4 mph WSW 81%
8 AM 27° Partly Cloudy 35% 5 mph W 75%
9 AM 29° Partly Cloudy 47% 5 mph W 70%
10 AM 30° Mostly Clear 55% 5 mph W 66%
11 AM 31° Mostly Clear 62% 6 mph W 63%
12 PM 33° Mostly Clear 62% 6 mph W 61%
1 PM 34° Mostly Clear 62% 6 mph W 60%
2 PM 33° Partly Cloudy 63% 6 mph W 65%
3 PM 33° Partly Cloudy 63% 5 mph W 70%
4 PM 32° Partly Cloudy 63% 6 mph W 74%
15-Day Forecast
Today
7/29
Partly Cloudy
44%
24°
37°
Thu
7/30
Partly Cloudy
62%
24°
37°
Fri
7/31
Mostly Cloudy
69%
23°
34°
Sat
8/1
Mostly Cloudy
66%
23°
33°
Sun
8/2
Mostly Cloudy
41%
21°
33°
Mon
8/3
Clear
38%
20°
34°
Tue
8/4
Clear
20%
21°
36°
Wed
8/5
Clear
33%
22°
36°
Thu
8/6
Drizzle
60%
22°
36°
Fri
8/7
Drizzle
60%
22°
37°
Sat
8/8
Drizzle
60%
22°
37°
Sun
8/9
Drizzle
60%
23°
37°
Mon
8/10
Drizzle
60%
23°
38°
Tue
8/11
Drizzle
60%
23°
37°
Wed
8/12
Drizzle
60%
23°
37°
51
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
51 AQI 9.2 µg/m³
O3
Ground-level ozone
28 AQI 31 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 51 Moderate 28 51
Fri 47 Good 28 47
Sat 55 Moderate 31 55
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 Jul 29, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2090 J/kg
MLCAPE1879 J/kg
MUCAPE2090 J/kg
SBCIN-12 J/kg
MLCIN0 J/kg
Lifted Index-5.2
Kinematics
0–6 km Shear14 kt
0–1 km Shear3 kt
Eff. Shear12 kt
0–1 km SRH-1
0–3 km SRH-22
Eff. SRH-22
Storm Motion282° @ 21 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index38.3
Thermo & Levels
PWAT2.30 in
0–3 km LR8.2 °C/km
700–500 LR5.3 °C/km
Total Totals48.3
LCL827 hPa
LFC802 hPa
EL144 hPa
Freezing Lvl16,539 ft