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, Lower 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, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM Extreme Heat Warning — 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, Lower 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, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM

Walthall County, Mississippi, United States

Last updated: 6:57 PM CDT  ·  Refresh
31°C
Feels like 37°
Mostly Cloudy
▲ 36°  /  ▼ 23°
Wind
4 mph ESE
Humidity
65%
Dew Point
23°
Pressure
29.63 inHg
Visibility
10 mi
UV Index
1.9
Cloud Cover
61%
Sunrise
6:29 AM
Sunset
7:37 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Walthall County is currently mostly cloudy at 31°C. Precipitation is likely — peak probability 65% around 6 PM. Atmospheric instability is elevated (CAPE up to 2897 J/kg) — isolated convective development possible. Sunrise: 6:29AM · Sunset: 7:37PM.

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, Lower 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, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
Extreme Heat Warning
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, Lower 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, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
41 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
41%
7 PM
30°
46%
8 PM
29°
51%
9 PM
27°
41%
10 PM
26°
30%
11 PM
25°
22%
12 AM
24°
15%
1 AM
25°
11%
2 AM
24°
11%
3 AM
24°
8%
4 AM
24°
9%
5 AM
23°
6%
6 AM
23°
3%
7 AM
25°
5%
8 AM
27°
13%
9 AM
30°
15%
10 AM
31°
27%
11 AM
33°
34%
12 PM
34°
34%
1 PM
37°
46%
2 PM
37°
51%
3 PM
37°
55%
4 PM
35°
55%
5 PM
31°
64%
7-Day Forecast
Tonight
36° 23°
Mostly Cloudy with a 41% chance of rain.
Fri
38° 23°
Mostly Clear with a 65% chance of rain.
Sat
37° 23°
Partly Cloudy with a 33% chance of rain.
Sun
39° 24°
Mostly Clear with a 55% chance of rain.
Mon
36° 24°
Rain, 72% chance.
Tue
38° 23°
Rain, 72% chance.
Wed
38° 23°
Rain, 73% chance.
TimeTempConditionsPrecipWindHumidity
Now 31° Mostly Cloudy 41% 4 mph ESE 65%
7 PM 30° Mostly Cloudy 46% 4 mph ENE 69%
8 PM 29° Partly Cloudy 51% 5 mph SE 73%
9 PM 27° Partly Cloudy 41% 5 mph SE 77%
10 PM 26° Partly Cloudy 30% 4 mph ESE 79%
11 PM 25° Partly Cloudy 22% 4 mph SE 80%
12 AM 24° Partly Cloudy 15% 4 mph SSW 82%
1 AM 25° Mostly Clear 11% 4 mph WSW 84%
2 AM 24° Mostly Clear 11% 4 mph WSW 86%
3 AM 24° Mostly Clear 8% 5 mph WSW 88%
4 AM 24° Mostly Clear 9% 4 mph WSW 86%
5 AM 23° Mostly Clear 6% 3 mph WSW 87%
6 AM 23° Clear 3% 4 mph WSW 88%
7 AM 25° Clear 5% 5 mph W 81%
8 AM 27° Clear 13% 5 mph W 73%
9 AM 30° Clear 15% 5 mph W 66%
10 AM 31° Clear 27% 5 mph W 59%
11 AM 33° Mostly Clear 34% 5 mph W 52%
12 PM 34° Mostly Clear 34% 5 mph WNW 45%
1 PM 37° Mostly Clear 46% 5 mph W 44%
2 PM 37° Partly Cloudy 51% 5 mph W 44%
3 PM 37° Rain 55% 5 mph W 44%
4 PM 35° Partly Cloudy 55% 4 mph W 50%
5 PM 31° Mostly Cloudy 64% 3 mph WSW 57%
15-Day Forecast
Today
8/20
Mostly Cloudy
41%
23°
36°
Fri
8/21
Mostly Clear
65%
23°
38°
Sat
8/22
Partly Cloudy
33%
23°
37°
Sun
8/23
Mostly Clear
55%
24°
39°
Mon
8/24
Rain
72%
24°
36°
Tue
8/25
Rain
72%
23°
38°
Wed
8/26
Rain
73%
23°
38°
Thu
8/27
Rain
74%
23°
34°
Fri
8/28
Drizzle
54%
21°
37°
Sat
8/29
Drizzle
47%
22°
38°
Sun
8/30
Drizzle
52%
22°
37°
Mon
8/31
Drizzle
60%
23°
38°
Tue
9/1
Drizzle
60%
23°
37°
Wed
9/2
Drizzle
60%
23°
38°
Thu
9/3
Drizzle
60%
23°
38°
41
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
41 AQI 7.4 µg/m³
O3
Ground-level ozone
29 AQI 32 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Fri 41 Good 29 41
Sat 44 Good 33 44
Sun 40 Good 31 40
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 Thu Aug 20, 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
SBCAPE2401 J/kg
MLCAPE2612 J/kg
MUCAPE2826 J/kg
SBCIN-141 J/kg
MLCIN-40 J/kg
Lifted Index-5.3
Kinematics
0–6 km Shear14 kt
0–1 km Shear5 kt
Eff. Shear15 kt
0–1 km SRH8
0–3 km SRH30
Eff. SRH30
Storm Motion61° @ 15 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index37.7
Thermo & Levels
PWAT2.14 in
0–3 km LR6.9 °C/km
700–500 LR5.8 °C/km
Total Totals50.1
LCL886 hPa
LFC813 hPa
EL157 hPa
Freezing Lvl15,840 ft