Severe Thunderstorm Watch 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 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

Slidell, Louisiana

Last updated: 3:01 PM CDT  ·  Refresh
36°C
Feels like 42°
Mostly Clear
▲ 36°  /  ▼ 25°
Wind
7 mph SW
Humidity
49%
Dew Point
23°
Pressure
29.95 inHg
Visibility
10 mi
UV Index
8.7
Cloud Cover
21%
Sunrise
6:29 AM
Sunset
7:34 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Slidell is currently mostly clear at 35°C. Precipitation is likely — peak probability 55% around 4 PM. Atmospheric instability is elevated (CAPE up to 2650 J/kg) — isolated convective development possible. Sunrise: 6:29AM · Sunset: 7:34PM.

Alerts

Severe Thunderstorm Watch
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
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
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
36°
34%
4 PM
34°
54%
5 PM
33°
48%
6 PM
31°
52%
7 PM
29°
41%
8 PM
28°
41%
9 PM
28°
40%
10 PM
27°
38%
11 PM
27°
32%
12 AM
27°
32%
1 AM
27°
21%
2 AM
27°
21%
3 AM
26°
22%
4 AM
26°
22%
5 AM
25°
23%
6 AM
25°
19%
7 AM
25°
11%
8 AM
27°
11%
9 AM
27°
11%
10 AM
29°
11%
11 AM
31°
11%
12 PM
32°
5%
1 PM
33°
5%
2 PM
35°
5%
7-Day Forecast
Today
36° 25°
Partly Cloudy with a 52% chance of rain.
Sat
37° 25°
Partly Cloudy with a 32% chance of rain.
Sun
37° 27°
Partly Cloudy with a 21% chance of rain.
Mon
34° 26°
Mostly Cloudy with a 63% chance of rain.
Tue
33° 26°
Drizzle, 42% chance.
Wed
33° 26°
Rain, 70% chance.
Thu
33° 26°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 36° Mostly Clear 34% 7 mph SW 49%
4 PM 34° Overcast 54% 7 mph SSW 50%
5 PM 33° Overcast 48% 8 mph W 56%
6 PM 31° Overcast 52% 5 mph ESE 64%
7 PM 29° Overcast 41% 5 mph N 72%
8 PM 28° Overcast 41% 7 mph NW 74%
9 PM 28° Overcast 40% 4 mph NW 77%
10 PM 27° Overcast 38% 5 mph W 80%
11 PM 27° Overcast 32% 4 mph NW 82%
12 AM 27° Overcast 32% 3 mph WNW 84%
1 AM 27° Mostly Cloudy 21% 4 mph WSW 85%
2 AM 27° Mostly Cloudy 21% 4 mph WSW 86%
3 AM 26° Mostly Cloudy 22% 4 mph W 87%
4 AM 26° Mostly Cloudy 22% 4 mph W 87%
5 AM 25° Mostly Cloudy 23% 4 mph W 86%
6 AM 25° Mostly Cloudy 19% 4 mph W 86%
7 AM 25° Mostly Cloudy 11% 4 mph W 85%
8 AM 27° Mostly Cloudy 11% 4 mph W 78%
9 AM 27° Mostly Cloudy 11% 3 mph WNW 70%
10 AM 29° Partly Cloudy 11% 3 mph WNW 64%
11 AM 31° Partly Cloudy 11% 3 mph W 61%
12 PM 32° Partly Cloudy 5% 4 mph W 57%
1 PM 33° Partly Cloudy 5% 4 mph WSW 53%
2 PM 35° Partly Cloudy 5% 4 mph W 52%
15-Day Forecast
Today
8/21
Partly Cloudy
52%
25°
36°
Sat
8/22
Partly Cloudy
32%
25°
37°
Sun
8/23
Partly Cloudy
21%
27°
37°
Mon
8/24
Mostly Cloudy
63%
26°
34°
Tue
8/25
Drizzle
42%
26°
33°
Wed
8/26
Rain
70%
26°
33°
Thu
8/27
Rain
71%
26°
33°
Fri
8/28
Rain
63%
25°
33°
Sat
8/29
Drizzle
44%
24°
33°
Sun
8/30
Rain
68%
25°
34°
Mon
8/31
Drizzle
60%
25°
33°
Tue
9/1
Drizzle
60%
24°
33°
Wed
9/2
Drizzle
60%
24°
33°
Thu
9/3
Drizzle
60%
24°
34°
Fri
9/4
Drizzle
60%
24°
33°
52
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
52 AQI 9.5 µg/m³
O3
Ground-level ozone
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 52 Moderate 36 52
Sun 51 Moderate 38 51
Mon 54 Moderate 42 54
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 Fri Aug 21, 17:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3636 J/kg
MLCAPE2620 J/kg
MUCAPE3636 J/kg
SBCIN-6 J/kg
MLCIN-30 J/kg
Lifted Index-8.2
Kinematics
0–6 km Shear18 kt
0–1 km Shear4 kt
Eff. Shear15 kt
0–1 km SRH15
0–3 km SRH52
Eff. SRH52
Storm Motion63° @ 15 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index37.4
Thermo & Levels
PWAT2.09 in
0–3 km LR8.2 °C/km
700–500 LR6.1 °C/km
Total Totals51.5
LCL850 hPa
LFC825 hPa
EL143 hPa
Freezing Lvl15,322 ft