Heat Advisory — Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Southern Hancock, MS 7:00 PM

Walthall County, Mississippi, United States

Last updated: 10:33 AM CDT  ·  Refresh
31°C
Feels like 37°
Clear
▲ 37°  /  ▼ 23°
Wind
5 mph N
Humidity
66%
Dew Point
24°
Pressure
29.61 inHg
Visibility
10 mi
UV Index
8.0
Cloud Cover
0%
Sunrise
6:40 AM
Sunset
7:16 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Walthall County is currently clear at 31°C. Precipitation is likely — peak probability 51% around 10 AM. Atmospheric instability is elevated (CAPE up to 2307 J/kg) — isolated convective development possible. Sunrise: 6:40AM · Sunset: 7:16PM.

Alerts

Heat Advisory
Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Southern Hancock, MS
Expires 7:00 PM
47 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
4%
11 AM
33°
23%
12 PM
34°
33%
1 PM
37°
30%
2 PM
37°
38%
3 PM
37°
39%
4 PM
36°
37%
5 PM
34°
36%
6 PM
33°
40%
7 PM
31°
32%
8 PM
30°
33%
9 PM
27°
29%
10 PM
26°
33%
11 PM
26°
45%
12 AM
25°
28%
1 AM
24°
28%
2 AM
24°
28%
3 AM
24°
28%
4 AM
24°
5%
5 AM
23°
5%
6 AM
23°
5%
7 AM
24°
21%
8 AM
26°
22%
9 AM
30°
35%
7-Day Forecast
Today
37° 23°
Clear with a 37% chance of rain.
Tue
37° 23°
Partly Cloudy with a 51% chance of rain.
Wed
35° 22°
Rain, 79% chance.
Thu
33° 22°
Rain, 90% chance.
Fri
34° 21°
Rain, 64% chance.
Sat
34° 22°
Rain, 82% chance.
Sun
36° 22°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 31° Clear 4% 5 mph N 66%
11 AM 33° Clear 23% 5 mph NNE 59%
12 PM 34° Clear 33% 5 mph NNE 53%
1 PM 37° Clear 30% 5 mph NNE 50%
2 PM 37° Mostly Clear 38% 5 mph NE 50%
3 PM 37° Mostly Clear 39% 5 mph ENE 50%
4 PM 36° Mostly Clear 37% 4 mph ENE 52%
5 PM 34° Mostly Clear 36% 3 mph ENE 56%
6 PM 33° Mostly Clear 40% 3 mph SSE 61%
7 PM 31° Mostly Clear 32% 4 mph S 68%
8 PM 30° Mostly Clear 33% 4 mph S 76%
9 PM 27° Partly Cloudy 29% 4 mph SSW 82%
10 PM 26° Mostly Clear 33% 4 mph S 86%
11 PM 26° Mostly Clear 45% 4 mph SSE 89%
12 AM 25° Mostly Clear 28% 3 mph SSE 91%
1 AM 24° Mostly Clear 28% 3 mph SE 92%
2 AM 24° Partly Cloudy 28% 2 mph SE 92%
3 AM 24° Partly Cloudy 28% 2 mph SE 92%
4 AM 24° Fog 5% 2 mph ESE 93%
5 AM 23° Fog 5% 3 mph ESE 93%
6 AM 23° Fog 5% 3 mph E 93%
7 AM 24° Mostly Clear 21% 4 mph E 90%
8 AM 26° Mostly Clear 22% 4 mph ESE 84%
9 AM 30° Mostly Clear 35% 5 mph ESE 78%
15-Day Forecast
Today
9/7
Clear
37%
23°
37°
Tue
9/8
Partly Cloudy
51%
23°
37°
Wed
9/9
Rain
79%
22°
35°
Thu
9/10
Rain
90%
22°
33°
Fri
9/11
Rain
64%
21°
34°
Sat
9/12
Rain
82%
22°
34°
Sun
9/13
Rain
71%
22°
36°
Mon
9/14
Drizzle
42%
22°
35°
Tue
9/15
Rain
68%
22°
36°
Wed
9/16
Drizzle
51%
21°
35°
Thu
9/17
Drizzle
60%
22°
34°
Fri
9/18
Drizzle
60%
21°
35°
Sat
9/19
Drizzle
60%
21°
34°
Sun
9/20
Drizzle
60%
20°
34°
Mon
9/21
Drizzle
60%
20°
33°
47
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
47 AQI 8.4 µg/m³
O3
Ground-level ozone
31 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 47 Good 31 47
Wed 41 Good 31 41
Thu 24 Good 24 19
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 Sep 7, 14:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3229 J/kg
MLCAPE2086 J/kg
MUCAPE3229 J/kg
SBCIN-25 J/kg
MLCIN-58 J/kg
Lifted Index-7.4
Kinematics
0–6 km Shear10 kt
0–1 km Shear3 kt
Eff. Shear19 kt
0–1 km SRH14
0–3 km SRH21
Eff. SRH21
Storm Motion85° @ 14 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.2
Thermo & Levels
PWAT2.06 in
0–3 km LR6.9 °C/km
700–500 LR6.0 °C/km
Total Totals48.3
LCL906 hPa
LFC855 hPa
EL138 hPa
Freezing Lvl15,164 ft