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: 2:24 PM CDT  ·  Refresh
34°C
Feels like 42°
Mostly Clear
▲ 36°  /  ▼ 23°
Wind
8 mph NNE
Humidity
58%
Dew Point
25°
Pressure
29.49 inHg
Visibility
10 mi
UV Index
9.4
Cloud Cover
24%
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 2239 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%
3 PM
36°
24%
4 PM
36°
5%
5 PM
36°
5%
6 PM
34°
3%
7 PM
33°
3%
8 PM
32°
3%
9 PM
28°
3%
10 PM
27°
3%
11 PM
27°
3%
12 AM
26°
3%
1 AM
25°
3%
2 AM
24°
3%
3 AM
24°
3%
4 AM
23°
3%
5 AM
23°
3%
6 AM
23°
3%
7 AM
23°
5%
8 AM
24°
16%
9 AM
28°
21%
10 AM
29°
27%
11 AM
29°
27%
12 PM
30°
39%
1 PM
31°
40%
7-Day Forecast
Today
36° 23°
Mostly Clear with a 26% chance of rain.
Wed
36° 23°
Partly Cloudy with a 45% chance of rain.
Thu
36° 23°
Partly Cloudy with a 50% chance of rain.
Fri
35° 24°
Partly Cloudy with a 70% chance of rain.
Sat
37° 23°
Drizzle, 60% chance.
Sun
37° 22°
Clear with a 43% chance of rain.
Mon
38° 23°
Drizzle, 43% chance.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Clear 26% 8 mph NNE 58%
3 PM 36° Partly Cloudy 24% 8 mph NNE 58%
4 PM 36° Mostly Clear 5% 9 mph NNE 57%
5 PM 36° Mostly Clear 5% 8 mph NNE 59%
6 PM 34° Partly Cloudy 3% 7 mph NNE 62%
7 PM 33° Mostly Clear 3% 6 mph NE 65%
8 PM 32° Mostly Clear 3% 6 mph NE 67%
9 PM 28° Mostly Clear 3% 6 mph ENE 70%
10 PM 27° Mostly Clear 3% 7 mph ENE 73%
11 PM 27° Mostly Clear 3% 7 mph ENE 77%
12 AM 26° Mostly Clear 3% 6 mph NE 81%
1 AM 25° Mostly Clear 3% 7 mph NE 84%
2 AM 24° Mostly Clear 3% 7 mph NE 86%
3 AM 24° Partly Cloudy 3% 7 mph NE 87%
4 AM 23° Partly Cloudy 3% 7 mph NNE 88%
5 AM 23° Partly Cloudy 3% 8 mph NNE 88%
6 AM 23° Partly Cloudy 3% 9 mph NNE 87%
7 AM 23° Partly Cloudy 5% 10 mph NNE 85%
8 AM 24° Partly Cloudy 16% 10 mph NE 80%
9 AM 28° Partly Cloudy 21% 11 mph NE 77%
10 AM 29° Partly Cloudy 27% 11 mph NE 74%
11 AM 29° Partly Cloudy 27% 12 mph NE 70%
12 PM 30° Partly Cloudy 39% 12 mph NE 67%
1 PM 31° Partly Cloudy 40% 12 mph NE 68%
15-Day Forecast
Today
7/21
Mostly Clear
26%
23°
36°
Wed
7/22
Partly Cloudy
45%
23°
36°
Thu
7/23
Partly Cloudy
50%
23°
36°
Fri
7/24
Partly Cloudy
70%
24°
35°
Sat
7/25
Drizzle
60%
23°
37°
Sun
7/26
Clear
43%
22°
37°
Mon
7/27
Drizzle
43%
23°
38°
Tue
7/28
Clear
25%
23°
38°
Wed
7/29
Drizzle
60%
23°
39°
Thu
7/30
Drizzle
60%
23°
37°
Fri
7/31
Drizzle
60%
23°
37°
Sat
8/1
Drizzle
60%
23°
38°
Sun
8/2
Drizzle
60%
23°
37°
Mon
8/3
Drizzle
60%
23°
37°
Tue
8/4
Drizzle
60%
23°
37°
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, 18:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3439 J/kg
MLCAPE2385 J/kg
MUCAPE3439 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-5.4
Kinematics
0–6 km Shear16 kt
0–1 km Shear8 kt
Eff. Shear25 kt
0–1 km SRH-21
0–3 km SRH-44
Eff. SRH-44
Storm Motion350° @ 27 kt
0–1 km EHI-0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.3
Thermo & Levels
PWAT2.14 in
0–3 km LR7.7 °C/km
700–500 LR4.8 °C/km
Total Totals44.0
LCL871 hPa
LFC999 hPa
EL123 hPa
Freezing Lvl17,438 ft