Simpson County, Mississippi, United States

Last updated: 5:35 PM CDT  ·  Refresh
30°C
Feels like 36°
Partly Cloudy
▲ 32°  /  ▼ 21°
Wind
6 mph NW
Humidity
74%
Dew Point
24°
Pressure
29.70 inHg
Visibility
10 mi
UV Index
5.9
Cloud Cover
36%
Sunrise
5:54 AM
Sunset
8:09 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Simpson County is currently partly cloudy at 30°C. Precipitation is likely — peak probability 64% around 9 AM. Atmospheric instability is elevated (CAPE up to 2581 J/kg) — isolated convective development possible. Sunrise: 5:54AM · Sunset: 8:09PM.

Alerts

No active alerts for this location.
39 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
30°
19%
6 PM
31°
45%
7 PM
30°
44%
8 PM
29°
43%
9 PM
26°
37%
10 PM
24°
42%
11 PM
24°
37%
12 AM
24°
35%
1 AM
22°
38%
2 AM
22°
35%
3 AM
21°
35%
4 AM
21°
39%
5 AM
23°
49%
6 AM
23°
54%
7 AM
23°
54%
8 AM
24°
63%
9 AM
27°
64%
10 AM
27°
54%
11 AM
28°
53%
12 PM
28°
47%
1 PM
28°
44%
2 PM
28°
45%
3 PM
28°
43%
4 PM
28°
42%
7-Day Forecast
Today
32° 21°
Partly Cloudy with a 43% chance of rain.
Wed
29° 21°
Rain, 65% chance.
Thu
32° 20°
Drizzle, 62% chance.
Fri
31° 21°
Clear.
Sat
33° 21°
Clear.
Sun
33° 21°
Thunderstorm, 47% chance.
Mon
34° 22°
Clear with a 24% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 30° Partly Cloudy 19% 6 mph NW 74%
6 PM 31° Partly Cloudy 45% 5 mph NW 77%
7 PM 30° Rain 44% 4 mph NNW 82%
8 PM 29° Rain 43% 3 mph NNW 87%
9 PM 26° Rain 37% 3 mph NE 90%
10 PM 24° Rain 42% 3 mph E 91%
11 PM 24° Rain 37% 3 mph ESE 91%
12 AM 24° Drizzle 35% 3 mph ESE 91%
1 AM 22° Drizzle 38% 3 mph SE 91%
2 AM 22° Drizzle 35% 3 mph SE 92%
3 AM 21° Drizzle 35% 3 mph SE 92%
4 AM 21° Drizzle 39% 2 mph SSE 93%
5 AM 23° Rain 49% 2 mph S 93%
6 AM 23° Rain 54% 2 mph S 94%
7 AM 23° Rain 54% 3 mph SSE 92%
8 AM 24° Rain 63% 3 mph S 90%
9 AM 27° Rain 64% 2 mph SW 88%
10 AM 27° Rain 54% 2 mph SW 86%
11 AM 28° Rain 53% 3 mph WSW 84%
12 PM 28° Rain 47% 4 mph WSW 82%
1 PM 28° Rain 44% 4 mph W 81%
2 PM 28° Rain 45% 3 mph WNW 79%
3 PM 28° Rain 43% 3 mph NW 78%
4 PM 28° Rain 42% 3 mph NW 78%
15-Day Forecast
Today
6/23
Partly Cloudy
43%
21°
32°
Wed
6/24
Rain
65%
21°
29°
Thu
6/25
Drizzle
62%
20°
32°
Fri
6/26
Clear
16%
21°
31°
Sat
6/27
Clear
15%
21°
33°
Sun
6/28
Thunderstorm
47%
21°
33°
Mon
6/29
Clear
24%
22°
34°
Tue
6/30
Thunderstorm
66%
21°
35°
Wed
7/1
Drizzle
66%
21°
32°
Thu
7/2
Drizzle
63%
19°
32°
Fri
7/3
Drizzle
63%
22°
28°
Sat
7/4
Drizzle
66%
22°
33°
Sun
7/5
Drizzle
66%
22°
33°
Mon
7/6
Drizzle
66%
22°
32°
Tue
7/7
Drizzle
66%
22°
32°
39
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
24 AQI 4.4 µg/m³
O3
Ground-level ozone
Dominant
39 AQI 42 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 39 Good 39 24
Thu 31 Good 27 31
Fri 54 Moderate 30 54
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 23, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2892 J/kg
MLCAPE2249 J/kg
MUCAPE2892 J/kg
SBCIN-38 J/kg
MLCIN0 J/kg
Lifted Index-8.4
Kinematics
0–6 km Shear6 kt
0–1 km Shear7 kt
Eff. Shear2 kt
0–1 km SRH-31
0–3 km SRH-62
Eff. SRH-62
Storm Motion245° @ 16 kt
0–1 km EHI-0.6
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index25.7
Thermo & Levels
PWAT1.60 in
0–3 km LR6.2 °C/km
700–500 LR7.1 °C/km
Total Totals51.0
LCL916 hPa
LFC888 hPa
EL148 hPa
Freezing Lvl14,875 ft