Extreme Heat Warning — Chicot, AR, West Carroll, LA, East Carroll, LA, Madison, 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 8:00 PM

Simpson County, Mississippi, United States

Last updated: 1:14 AM CDT  ·  Refresh
80°F
Feels like 85°
Partly Cloudy
▲ 101°  /  ▼ 76°
Wind
4 mph SW
Humidity
81%
Dew Point
73°
Pressure
29.70 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
32%
Sunrise
6:25 AM
Sunset
7:41 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Simpson County is currently partly cloudy at 80°F. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1634 J/kg) — isolated convective development possible. Sunrise: 6:25AM · Sunset: 7:41PM.

Alerts

Extreme Heat Warning
Chicot, AR, West Carroll, LA, East Carroll, LA, Madison, 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 8:00 PM
57 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
80°
8%
2 AM
79°
4%
3 AM
79°
4%
4 AM
78°
4%
5 AM
76°
4%
6 AM
76°
3%
7 AM
77°
3%
8 AM
80°
7%
9 AM
85°
7%
10 AM
88°
7%
11 AM
92°
8%
12 PM
96°
8%
1 PM
100°
8%
2 PM
101°
8%
3 PM
101°
8%
4 PM
100°
8%
5 PM
100°
8%
6 PM
98°
3%
7 PM
96°
3%
8 PM
94°
3%
9 PM
86°
3%
10 PM
85°
5%
11 PM
85°
5%
12 AM
85°
5%
7-Day Forecast
Today
101° 76°
Mostly Clear.
Tue
107° 76°
Mostly Clear with a 65% chance of rain.
Wed
108° 76°
Mostly Clear with a 57% chance of rain.
Thu
103° 74°
Rain, 64% chance.
Fri
103° 71°
Rain, 64% chance.
Sat
102° 71°
Drizzle, 52% chance.
Sun
103° 72°
Rain, 28% chance.
TimeTempConditionsPrecipWindHumidity
Now 80° Partly Cloudy 8% 4 mph SW 81%
2 AM 79° Partly Cloudy 4% 5 mph SW 80%
3 AM 79° Mostly Clear 4% 5 mph SW 80%
4 AM 78° Mostly Clear 4% 4 mph SW 80%
5 AM 76° Mostly Clear 4% 5 mph WSW 82%
6 AM 76° Mostly Clear 3% 5 mph WSW 84%
7 AM 77° Mostly Clear 3% 6 mph WSW 83%
8 AM 80° Mostly Clear 7% 7 mph W 76%
9 AM 85° Mostly Clear 7% 7 mph W 68%
10 AM 88° Mostly Clear 7% 8 mph W 61%
11 AM 92° Mostly Clear 8% 8 mph WNW 52%
12 PM 96° Mostly Clear 8% 7 mph WNW 44%
1 PM 100° Mostly Clear 8% 7 mph WNW 39%
2 PM 101° Mostly Clear 8% 6 mph W 38%
3 PM 101° Mostly Clear 8% 6 mph W 37%
4 PM 100° Partly Cloudy 8% 6 mph WSW 38%
5 PM 100° Partly Cloudy 8% 6 mph WSW 42%
6 PM 98° Partly Cloudy 3% 8 mph SW 47%
7 PM 96° Partly Cloudy 3% 8 mph SW 52%
8 PM 94° Partly Cloudy 3% 7 mph SW 54%
9 PM 86° Partly Cloudy 3% 6 mph SW 56%
10 PM 85° Partly Cloudy 5% 6 mph SW 58%
11 PM 85° Partly Cloudy 5% 6 mph WSW 59%
12 AM 85° Partly Cloudy 5% 6 mph WSW 59%
15-Day Forecast
Today
8/17
Mostly Clear
8%
76°
101°
Tue
8/18
Mostly Clear
65%
76°
107°
Wed
8/19
Mostly Clear
57%
76°
108°
Thu
8/20
Rain
64%
74°
103°
Fri
8/21
Rain
64%
71°
103°
Sat
8/22
Drizzle
52%
71°
102°
Sun
8/23
Rain
28%
72°
103°
Mon
8/24
Drizzle
43%
73°
104°
Tue
8/25
Drizzle
44%
74°
100°
Wed
8/26
Drizzle
60%
73°
102°
Thu
8/27
Drizzle
60%
74°
104°
Fri
8/28
Drizzle
60%
73°
103°
Sat
8/29
Drizzle
60%
72°
102°
Sun
8/30
Drizzle
60%
72°
100°
Mon
8/31
Drizzle
60%
72°
99°
57
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
57 AQI 12.4 µg/m³
O3
Ground-level ozone
30 AQI 32 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 57 Moderate 30 57
Tue 56 Moderate 38 56
Wed 55 Moderate 33 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 Mon Aug 17, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE798 J/kg
MLCAPE962 J/kg
MUCAPE1152 J/kg
SBCIN-286 J/kg
MLCIN-180 J/kg
Lifted Index-1.6
Kinematics
0–6 km Shear5 kt
0–1 km Shear9 kt
Eff. Shear7 kt
0–1 km SRH33
0–3 km SRH74
Eff. SRH94
Storm Motion120° @ 12 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index27.3
Thermo & Levels
PWAT1.84 in
0–3 km LR5.1 °C/km
700–500 LR5.4 °C/km
Total Totals45.4
LCL950 hPa
LFC715 hPa
EL198 hPa
Freezing Lvl16,660 ft