Simpson County, Mississippi, United States

Last updated: 6:50 PM CDT  ·  Refresh
28°C
Feels like 32°
Overcast
▲ 29°  /  ▼ 22°
Wind
7 mph WSW
Humidity
80%
Dew Point
23°
Pressure
29.67 inHg
Visibility
10 mi
UV Index
1.3
Cloud Cover
95%
Sunrise
6:03 AM
Sunset
8:07 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Simpson County is currently overcast at 28°C. Precipitation is likely — peak probability 90% around 11 AM. Atmospheric instability is elevated (CAPE up to 1590 J/kg) — isolated convective development possible. Sunrise: 6:03AM · Sunset: 8:07PM.

Alerts

No active alerts for this location.
25 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
41%
7 PM
29°
84%
8 PM
28°
81%
9 PM
25°
71%
10 PM
25°
49%
11 PM
23°
39%
12 AM
23°
27%
1 AM
23°
21%
2 AM
23°
39%
3 AM
23°
39%
4 AM
23°
39%
5 AM
22°
33%
6 AM
22°
38%
7 AM
22°
57%
8 AM
23°
57%
9 AM
24°
58%
10 AM
25°
69%
11 AM
26°
90%
12 PM
27°
90%
1 PM
29°
90%
2 PM
29°
90%
3 PM
29°
72%
4 PM
29°
56%
5 PM
26°
49%
7-Day Forecast
Tonight
29° 22°
Overcast with a 71% chance of rain.
Tue
30° 22°
Rain, 90% chance.
Wed
34° 21°
Partly Cloudy with a 62% chance of rain.
Thu
34° 22°
Clear with a 25% chance of rain.
Fri
35° 22°
Clear.
Sat
36° 22°
Rain, 29% chance.
Sun
36° 22°
Clear with a 29% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 28° Overcast 41% 7 mph WSW 80%
7 PM 29° Mostly Cloudy 84% 8 mph WNW 82%
8 PM 28° Overcast 81% 6 mph SW 84%
9 PM 25° Overcast 71% 8 mph WSW 86%
10 PM 25° Overcast 49% 6 mph WSW 87%
11 PM 23° Overcast 39% 5 mph WSW 94%
12 AM 23° Overcast 27% 5 mph WSW 94%
1 AM 23° Overcast 21% 5 mph WSW 95%
2 AM 23° Overcast 39% 6 mph W 95%
3 AM 23° Overcast 39% 6 mph W 95%
4 AM 23° Overcast 39% 6 mph W 96%
5 AM 22° Overcast 33% 6 mph W 96%
6 AM 22° Overcast 38% 6 mph WSW 96%
7 AM 22° Overcast 57% 6 mph WSW 94%
8 AM 23° Overcast 57% 6 mph WSW 92%
9 AM 24° Overcast 58% 6 mph WSW 90%
10 AM 25° Overcast 69% 7 mph WSW 88%
11 AM 26° Overcast 90% 8 mph WSW 85%
12 PM 27° Rain 90% 8 mph WSW 83%
1 PM 29° Rain 90% 8 mph WSW 82%
2 PM 29° Overcast 90% 7 mph WSW 81%
3 PM 29° Mostly Cloudy 72% 7 mph SW 80%
4 PM 29° Drizzle 56% 6 mph SW 83%
5 PM 26° Rain 49% 5 mph SW 90%
15-Day Forecast
Today
7/13
Overcast
71%
22°
29°
Tue
7/14
Rain
90%
22°
30°
Wed
7/15
Partly Cloudy
62%
21°
34°
Thu
7/16
Clear
25%
22°
34°
Fri
7/17
Clear
16%
22°
35°
Sat
7/18
Rain
29%
22°
36°
Sun
7/19
Clear
29%
22°
36°
Mon
7/20
Rain
63%
23°
37°
Tue
7/21
Drizzle
44%
23°
37°
Wed
7/22
Drizzle
51%
23°
38°
Thu
7/23
Drizzle
60%
22°
36°
Fri
7/24
Drizzle
90%
23°
35°
Sat
7/25
Drizzle
60%
22°
36°
Sun
7/26
Drizzle
60%
22°
36°
Mon
7/27
Drizzle
60%
23°
37°
25
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
25 AQI 4.5 µg/m³
O3
Ground-level ozone
24 AQI 26 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 25 Good 24 25
Wed 35 Good 26 35
Thu 52 Moderate 25 52
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
GFS
Valid Mon Jul 13, 12:00'Z' · F0 · 3 (global 1°)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1799 J/kg
MLCAPE1305 J/kg
MUCAPE1799 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-5.4
Kinematics
0–6 km Shear16 kt
0–1 km Shear3 kt
Eff. Shear14 kt
0–1 km SRH-15
0–3 km SRH-37
Eff. SRH-37
Storm Motion301° @ 23 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index23.0
Thermo & Levels
PWAT1.67 in
0–3 km LR6.5 °C/km
700–500 LR5.8 °C/km
Total Totals45.4
LCL928 hPa
LFC1005 hPa
EL183 hPa
Freezing Lvl14,852 ft