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, Scott, 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: 3:33 AM CDT  ·  Refresh
24°C
Feels like 28°
Clear
▲ 36°  /  ▼ 23°
Wind
2 mph W
Humidity
83%
Dew Point
22°
Pressure
29.65 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
6%
Sunrise
6:07 AM
Sunset
8:04 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Simpson County is currently clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1759 J/kg) — isolated convective development possible. Sunrise: 6:07AM · Sunset: 8:04PM.

Alerts

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, Scott, 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
58 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
3%
4 AM
23°
3%
5 AM
22°
3%
6 AM
23°
3%
7 AM
24°
3%
8 AM
27°
3%
9 AM
31°
3%
10 AM
33°
3%
11 AM
34°
3%
12 PM
34°
3%
1 PM
36°
3%
2 PM
36°
3%
3 PM
36°
3%
4 PM
35°
3%
5 PM
36°
3%
6 PM
34°
3%
7 PM
33°
3%
8 PM
33°
3%
9 PM
29°
3%
10 PM
28°
5%
11 PM
27°
5%
12 AM
26°
5%
1 AM
26°
5%
2 AM
26°
5%
7-Day Forecast
Today
36° 23°
Mostly Clear.
Mon
38° 23°
Partly Cloudy with a 71% chance of rain.
Tue
38° 24°
Drizzle, 54% chance.
Wed
38° 24°
Clear.
Thu
38° 23°
Clear.
Fri
39° 23°
Drizzle, 52% chance.
Sat
38° 23°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Clear 3% 2 mph W 83%
4 AM 23° Clear 3% 3 mph WNW 83%
5 AM 22° Clear 3% 3 mph WNW 85%
6 AM 23° Clear 3% 3 mph WNW 87%
7 AM 24° Clear 3% 3 mph WNW 83%
8 AM 27° Clear 3% 4 mph NW 74%
9 AM 31° Clear 3% 6 mph NW 65%
10 AM 33° Clear 3% 6 mph NNW 59%
11 AM 34° Mostly Clear 3% 6 mph NNW 53%
12 PM 34° Mostly Clear 3% 6 mph NNW 48%
1 PM 36° Partly Cloudy 3% 6 mph NNW 45%
2 PM 36° Partly Cloudy 3% 7 mph NNW 46%
3 PM 36° Partly Cloudy 3% 7 mph NNW 46%
4 PM 35° Partly Cloudy 3% 7 mph NNW 48%
5 PM 36° Mostly Clear 3% 6 mph NNW 51%
6 PM 34° Clear 3% 4 mph NNW 55%
7 PM 33° Clear 3% 3 mph NNW 59%
8 PM 33° Mostly Clear 3% 3 mph N 63%
9 PM 29° Partly Cloudy 3% 4 mph E 67%
10 PM 28° Partly Cloudy 5% 4 mph ESE 71%
11 PM 27° Mostly Clear 5% 4 mph ESE 75%
12 AM 26° Mostly Clear 5% 4 mph ESE 79%
1 AM 26° Mostly Clear 5% 4 mph ESE 82%
2 AM 26° Mostly Clear 5% 3 mph ESE 84%
15-Day Forecast
Today
7/19
Mostly Clear
3%
23°
36°
Mon
7/20
Partly Cloudy
71%
23°
38°
Tue
7/21
Drizzle
54%
24°
38°
Wed
7/22
Clear
18%
24°
38°
Thu
7/23
Clear
16%
23°
38°
Fri
7/24
Drizzle
52%
23°
39°
Sat
7/25
Rain
63%
23°
38°
Sun
7/26
Rain
69%
23°
36°
Mon
7/27
Rain
68%
23°
37°
Tue
7/28
Drizzle
68%
23°
36°
Wed
7/29
Drizzle
60%
23°
37°
Thu
7/30
Drizzle
60%
23°
36°
Fri
7/31
Drizzle
60%
23°
37°
Sat
8/1
Drizzle
60%
23°
38°
Sun
8/2
Drizzle
60%
23°
38°
58
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
58 AQI 12.6 µg/m³
O3
Ground-level ozone
24 AQI 26 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 58 Moderate 24 58
Mon 58 Moderate 29 58
Tue 60 Moderate 32 60
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 Sun Jul 19, 07:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE445 J/kg
MLCAPE1224 J/kg
MUCAPE1737 J/kg
SBCIN-383 J/kg
MLCIN0 J/kg
Lifted Index-2.9
Kinematics
0–6 km Shear16 kt
0–1 km Shear4 kt
Eff. Shear12 kt
0–1 km SRH-16
0–3 km SRH-53
Eff. SRH-47
Storm Motion302° @ 21 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index18.7
Thermo & Levels
PWAT1.52 in
0–3 km LR4.4 °C/km
700–500 LR6.6 °C/km
Total Totals42.7
LCL968 hPa
LFC669 hPa
EL331 hPa
Freezing Lvl14,816 ft