Heat Advisory — Bolivar, MS, Sunflower, MS, Leflore, MS, Washington, MS, Humphreys, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Warren, MS, Hinds, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS, Grenada, MS, Carroll, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Holmes, MS, Attala, MS, Winston, MS, Noxubee, MS, Madison, MS, Leake, MS, Neshoba, MS, Kemper, MS, Rankin, MS, Scott, MS, Newton, MS, Lauderdale, MS, Smith, MS, Jasper, MS, Clarke, MS 9:00 PM Excessive Heat Warning — 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, 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

Simpson County, Mississippi, United States

Last updated: 3:44 PM CDT  ·  Refresh
34°C
Feels like 39°
Clear
▲ 35°  /  ▼ 23°
Wind
2 mph ENE
Humidity
54%
Dew Point
23°
Pressure
29.70 inHg
Visibility
10 mi
UV Index
8.5
Cloud Cover
9%
Sunrise
5:57 AM
Sunset
8:09 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Simpson County is currently clear at 34°C. Precipitation is likely — peak probability 51% around 3 PM. Atmospheric instability is elevated (CAPE up to 2796 J/kg) — isolated convective development possible. Sunrise: 5:57AM · Sunset: 8:09PM.

Alerts

Heat Advisory
Bolivar, MS, Sunflower, MS, Leflore, MS, Washington, MS, Humphreys, MS, Issaquena, MS, Sharkey, MS, Yazoo, MS, Warren, MS, Hinds, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Covington, MS, Jones, MS, Marion, MS, Lamar, MS, Forrest, MS, Grenada, MS, Carroll, MS, Montgomery, MS, Webster, MS, Clay, MS, Lowndes, MS, Choctaw, MS, Oktibbeha, MS, Holmes, MS, Attala, MS, Winston, MS, Noxubee, MS, Madison, MS, Leake, MS, Neshoba, MS, Kemper, MS, Rankin, MS, Scott, MS, Newton, MS, Lauderdale, MS, Smith, MS, Jasper, MS, Clarke, MS
Expires 9:00 PM
Excessive Heat Warning
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, 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
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
3%
4 PM
35°
3%
5 PM
35°
3%
6 PM
34°
3%
7 PM
32°
3%
8 PM
31°
3%
9 PM
27°
3%
10 PM
26°
5%
11 PM
25°
5%
12 AM
24°
5%
1 AM
24°
8%
2 AM
24°
9%
3 AM
24°
9%
4 AM
24°
9%
5 AM
23°
9%
6 AM
23°
9%
7 AM
25°
16%
8 AM
27°
26%
9 AM
29°
27%
10 AM
31°
37%
11 AM
31°
38%
12 PM
32°
43%
1 PM
33°
39%
2 PM
33°
44%
7-Day Forecast
Today
35° 23°
Clear.
Wed
36° 23°
Rain, 50% chance.
Thu
36° 23°
Partly Cloudy.
Fri
34° 24°
Partly Cloudy with a 74% chance of rain.
Sat
34° 22°
Drizzle, 60% chance.
Sun
33° 22°
Rain, 90% chance.
Mon
33° 22°
Drizzle, 68% chance.
TimeTempConditionsPrecipWindHumidity
Now 34° Clear 3% 2 mph ENE 54%
4 PM 35° Clear 3% 2 mph ENE 54%
5 PM 35° Clear 3% 3 mph ENE 58%
6 PM 34° Clear 3% 3 mph ENE 64%
7 PM 32° Mostly Clear 3% 3 mph E 68%
8 PM 31° Mostly Clear 3% 5 mph ESE 72%
9 PM 27° Partly Cloudy 3% 7 mph ESE 76%
10 PM 26° Partly Cloudy 5% 6 mph ESE 79%
11 PM 25° Partly Cloudy 5% 4 mph ESE 80%
12 AM 24° Partly Cloudy 5% 3 mph ESE 81%
1 AM 24° Partly Cloudy 8% 3 mph SE 82%
2 AM 24° Partly Cloudy 9% 2 mph SE 82%
3 AM 24° Partly Cloudy 9% 2 mph NNE 83%
4 AM 24° Mostly Clear 9% 2 mph NNE 84%
5 AM 23° Mostly Clear 9% 1 mph NNE 86%
6 AM 23° Mostly Clear 9% 2 mph NE 87%
7 AM 25° Clear 16% 2 mph NE 82%
8 AM 27° Clear 26% 3 mph ENE 75%
9 AM 29° Clear 27% 3 mph ENE 69%
10 AM 31° Clear 37% 4 mph E 66%
11 AM 31° Mostly Clear 38% 4 mph E 64%
12 PM 32° Mostly Clear 43% 4 mph E 61%
1 PM 33° Mostly Clear 39% 4 mph E 60%
2 PM 33° Mostly Clear 44% 5 mph E 61%
15-Day Forecast
Today
6/30
Clear
3%
23°
35°
Wed
7/1
Rain
50%
23°
36°
Thu
7/2
Partly Cloudy
16%
23°
36°
Fri
7/3
Partly Cloudy
74%
24°
34°
Sat
7/4
Drizzle
60%
22°
34°
Sun
7/5
Rain
90%
22°
33°
Mon
7/6
Drizzle
68%
22°
33°
Tue
7/7
Drizzle
60%
22°
34°
Wed
7/8
Drizzle
60%
22°
34°
Thu
7/9
Rain
90%
23°
35°
Fri
7/10
Drizzle
75%
22°
33°
Sat
7/11
Rain
90%
22°
34°
Sun
7/12
Drizzle
60%
22°
33°
Mon
7/13
Rain
90%
22°
33°
Tue
7/14
Drizzle
60%
22°
33°
52
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
52 AQI 9.7 µg/m³
O3
Ground-level ozone
29 AQI 31 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 52 Moderate 29 52
Thu 53 Moderate 31 53
Fri 50 Good 28 50
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 Tue Jun 30, 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
SBCAPE3366 J/kg
MLCAPE1809 J/kg
MUCAPE3366 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-8.2
Kinematics
0–6 km Shear15 kt
0–1 km Shear1 kt
Eff. Shear21 kt
0–1 km SRH-1
0–3 km SRH-16
Eff. SRH-16
Storm Motion55° @ 19 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index20.0
Thermo & Levels
PWAT1.70 in
0–3 km LR7.1 °C/km
700–500 LR7.1 °C/km
Total Totals47.7
LCL863 hPa
LFC1006 hPa
EL139 hPa
Freezing Lvl15,184 ft