Excessive 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 8:00 PM

Walthall County, Mississippi, United States

Last updated: 5:35 PM CDT  ·  Refresh
34°C
Feels like 43°
Mostly Clear
▲ 36°  /  ▼ 23°
Wind
8 mph NNE
Humidity
60%
Dew Point
24°
Pressure
29.45 inHg
Visibility
9 mi
UV Index
5.8
Cloud Cover
29%
Sunrise
6:10 AM
Sunset
8:02 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Walthall County is currently mostly clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2284 J/kg) — isolated convective development possible. Sunrise: 6:10AM · Sunset: 8:02PM.

Alerts

Excessive 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
Expires 8:00 PM
58 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
26%
6 PM
34°
25%
7 PM
33°
25%
8 PM
32°
25%
9 PM
28°
23%
10 PM
27°
23%
11 PM
27°
16%
12 AM
26°
15%
1 AM
26°
3%
2 AM
25°
3%
3 AM
24°
3%
4 AM
24°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
24°
8%
8 AM
26°
16%
9 AM
28°
16%
10 AM
29°
20%
11 AM
31°
20%
12 PM
32°
32%
1 PM
33°
40%
2 PM
33°
45%
3 PM
32°
45%
4 PM
32°
45%
7-Day Forecast
Today
36° 23°
Mostly Clear with a 26% chance of rain.
Wed
36° 23°
Partly Cloudy with a 41% chance of rain.
Thu
34° 24°
Partly Cloudy with a 74% chance of rain.
Fri
35° 24°
Mostly Cloudy with a 69% chance of rain.
Sat
36° 23°
Drizzle, 53% chance.
Sun
36° 23°
Partly Cloudy with a 43% chance of rain.
Mon
37° 23°
Mostly Clear with a 38% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Clear 26% 8 mph NNE 60%
6 PM 34° Partly Cloudy 25% 6 mph NE 64%
7 PM 33° Mostly Clear 25% 6 mph NE 67%
8 PM 32° Mostly Clear 25% 5 mph NE 69%
9 PM 28° Clear 23% 6 mph NE 71%
10 PM 27° Clear 23% 6 mph NE 74%
11 PM 27° Clear 16% 5 mph NE 77%
12 AM 26° Mostly Clear 15% 6 mph NE 80%
1 AM 26° Mostly Clear 3% 6 mph NE 82%
2 AM 25° Mostly Clear 3% 6 mph NNE 84%
3 AM 24° Mostly Clear 3% 6 mph NNE 87%
4 AM 24° Mostly Clear 3% 6 mph NNE 88%
5 AM 23° Partly Cloudy 3% 7 mph NNE 88%
6 AM 23° Partly Cloudy 3% 8 mph NNE 88%
7 AM 24° Partly Cloudy 8% 9 mph NNE 85%
8 AM 26° Partly Cloudy 16% 10 mph NNE 80%
9 AM 28° Mostly Clear 16% 12 mph NE 75%
10 AM 29° Mostly Clear 20% 12 mph NE 70%
11 AM 31° Mostly Clear 20% 13 mph NE 64%
12 PM 32° Mostly Clear 32% 13 mph NE 61%
1 PM 33° Mostly Clear 40% 14 mph NE 62%
2 PM 33° Partly Cloudy 45% 13 mph NE 66%
3 PM 32° Partly Cloudy 45% 13 mph NE 70%
4 PM 32° Partly Cloudy 45% 13 mph NE 72%
15-Day Forecast
Today
7/21
Mostly Clear
26%
23°
36°
Wed
7/22
Partly Cloudy
41%
23°
36°
Thu
7/23
Partly Cloudy
74%
24°
34°
Fri
7/24
Mostly Cloudy
69%
24°
35°
Sat
7/25
Drizzle
53%
23°
36°
Sun
7/26
Partly Cloudy
43%
23°
36°
Mon
7/27
Mostly Clear
38%
23°
37°
Tue
7/28
Mostly Clear
44%
23°
38°
Wed
7/29
Drizzle
68%
23°
38°
Thu
7/30
Drizzle
68%
23°
37°
Fri
7/31
Drizzle
60%
23°
36°
Sat
8/1
Drizzle
60%
23°
37°
Sun
8/2
Drizzle
60%
23°
37°
Mon
8/3
Drizzle
60%
23°
36°
Tue
8/4
Drizzle
60%
23°
36°
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 13.2 µg/m³
O3
Ground-level ozone
25 AQI 28 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 58 Moderate 25 58
Thu 32 Good 29 32
Fri 41 Good 30 41
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 Jul 21, 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
SBCAPE3200 J/kg
MLCAPE2391 J/kg
MUCAPE3200 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.9
Kinematics
0–6 km Shear16 kt
0–1 km Shear10 kt
Eff. Shear28 kt
0–1 km SRH-24
0–3 km SRH-46
Eff. SRH-46
Storm Motion360° @ 28 kt
0–1 km EHI-0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.4
Thermo & Levels
PWAT2.26 in
0–3 km LR7.9 °C/km
700–500 LR4.6 °C/km
Total Totals45.4
LCL865 hPa
LFC997 hPa
EL124 hPa
Freezing Lvl17,638 ft