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: 9:47 AM CDT  ·  Refresh
85°F
Feels like 94°
Clear
▲ 98°  /  ▼ 74°
Wind
4 mph N
Humidity
74%
Dew Point
76°
Pressure
29.62 inHg
Visibility
10 mi
UV Index
7.1
Cloud Cover
4%
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 85°F. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2428 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
85°
8%
10 AM
90°
23%
11 AM
92°
23%
12 PM
95°
23%
1 PM
98°
28%
2 PM
98°
29%
3 PM
98°
16%
4 PM
97°
37%
5 PM
93°
25%
6 PM
90°
36%
7 PM
88°
33%
8 PM
86°
33%
9 PM
82°
33%
10 PM
81°
33%
11 PM
80°
28%
12 AM
79°
28%
1 AM
78°
24%
2 AM
77°
28%
3 AM
76°
24%
4 AM
77°
14%
5 AM
74°
14%
6 AM
74°
14%
7 AM
76°
30%
8 AM
78°
35%
7-Day Forecast
Today
98° 74°
Mostly Clear with a 36% chance of rain.
Tue
99° 74°
Rain, 75% chance.
Wed
96° 70°
Partly Cloudy with a 71% chance of rain.
Thu
92° 71°
Overcast with a 76% chance of rain.
Fri
93° 70°
Rain, 64% chance.
Sat
94° 70°
Rain, 82% chance.
Sun
96° 71°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 85° Clear 8% 4 mph N 74%
10 AM 90° Clear 23% 5 mph N 65%
11 AM 92° Clear 23% 5 mph NNE 58%
12 PM 95° Clear 23% 5 mph NNE 52%
1 PM 98° Clear 28% 5 mph NNE 50%
2 PM 98° Mostly Clear 29% 5 mph NE 51%
3 PM 98° Mostly Clear 16% 5 mph NE 50%
4 PM 97° Mostly Clear 37% 4 mph ENE 52%
5 PM 93° Mostly Clear 25% 4 mph SSE 55%
6 PM 90° Partly Cloudy 36% 4 mph S 61%
7 PM 88° Partly Cloudy 33% 3 mph SSE 67%
8 PM 86° Partly Cloudy 33% 3 mph SSE 72%
9 PM 82° Partly Cloudy 33% 3 mph SSE 76%
10 PM 81° Partly Cloudy 33% 3 mph SSE 79%
11 PM 80° Mostly Clear 28% 4 mph SSE 82%
12 AM 79° Mostly Clear 28% 4 mph SSE 85%
1 AM 78° Partly Cloudy 24% 3 mph SSE 87%
2 AM 77° Partly Cloudy 28% 3 mph SSE 89%
3 AM 76° Partly Cloudy 24% 3 mph SSE 90%
4 AM 77° Partly Cloudy 14% 3 mph SE 91%
5 AM 74° Partly Cloudy 14% 3 mph SE 92%
6 AM 74° Partly Cloudy 14% 4 mph ESE 92%
7 AM 76° Partly Cloudy 30% 4 mph ESE 88%
8 AM 78° Partly Cloudy 35% 5 mph ESE 82%
15-Day Forecast
Today
9/7
Mostly Clear
36%
74°
98°
Tue
9/8
Rain
75%
74°
99°
Wed
9/9
Partly Cloudy
71%
70°
96°
Thu
9/10
Overcast
76%
71°
92°
Fri
9/11
Rain
64%
70°
93°
Sat
9/12
Rain
82%
70°
94°
Sun
9/13
Rain
71%
71°
96°
Mon
9/14
Drizzle
42%
72°
95°
Tue
9/15
Drizzle
68%
71°
96°
Wed
9/16
Drizzle
51%
69°
95°
Thu
9/17
Drizzle
60%
70°
95°
Fri
9/18
Drizzle
60%
70°
95°
Sat
9/19
Drizzle
60%
69°
93°
Sun
9/20
Drizzle
60%
68°
93°
Mon
9/21
Drizzle
60%
68°
92°
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, 13:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2690 J/kg
MLCAPE1702 J/kg
MUCAPE2690 J/kg
SBCIN-57 J/kg
MLCIN-80 J/kg
Lifted Index-6.5
Kinematics
0–6 km Shear11 kt
0–1 km Shear5 kt
Eff. Shear21 kt
0–1 km SRH23
0–3 km SRH17
Eff. SRH17
Storm Motion81° @ 14 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.5
K-Index33.8
Thermo & Levels
PWAT2.05 in
0–3 km LR6.2 °C/km
700–500 LR5.9 °C/km
Total Totals48.5
LCL931 hPa
LFC847 hPa
EL148 hPa
Freezing Lvl15,299 ft