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

Slidell, Louisiana

Last updated: 7:01 PM CDT  ·  Refresh
33°C
Feels like 36°
Clear
▲ 34°  /  ▼ 26°
Wind
5 mph SSW
Humidity
47%
Dew Point
20°
Pressure
29.92 inHg
Visibility
10 mi
UV Index
2.1
Cloud Cover
5%
Sunrise
6:29 AM
Sunset
7:35 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Slidell is currently clear at 33°C. Precipitation is likely — peak probability 64% around 6 PM. Atmospheric instability is elevated (CAPE up to 2843 J/kg) — isolated convective development possible. Sunrise: 6:29AM · Sunset: 7:35PM.

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
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
15%
7 PM
32°
31%
8 PM
31°
31%
9 PM
29°
31%
10 PM
29°
24%
11 PM
28°
18%
12 AM
27°
7%
1 AM
27°
7%
2 AM
27°
7%
3 AM
27°
7%
4 AM
27°
7%
5 AM
26°
8%
6 AM
26°
8%
7 AM
27°
25%
8 AM
29°
25%
9 AM
29°
32%
10 AM
30°
41%
11 AM
31°
44%
12 PM
32°
48%
1 PM
34°
56%
2 PM
34°
56%
3 PM
33°
57%
4 PM
33°
57%
5 PM
33°
63%
7-Day Forecast
Tonight
34° 26°
Clear with a 31% chance of rain.
Fri
36° 26°
Mostly Clear with a 64% chance of rain.
Sat
36° 26°
Partly Cloudy.
Sun
37° 26°
Mostly Clear with a 60% chance of rain.
Mon
34° 26°
Rain, 64% chance.
Tue
34° 26°
Rain, 65% chance.
Wed
35° 26°
Rain, 70% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Clear 15% 5 mph SSW 47%
7 PM 32° Mostly Clear 31% 3 mph S 55%
8 PM 31° Mostly Clear 31% 3 mph SSW 63%
9 PM 29° Partly Cloudy 31% 3 mph SW 71%
10 PM 29° Partly Cloudy 24% 4 mph WSW 73%
11 PM 28° Partly Cloudy 18% 5 mph W 77%
12 AM 27° Partly Cloudy 7% 5 mph WNW 81%
1 AM 27° Partly Cloudy 7% 4 mph WNW 82%
2 AM 27° Partly Cloudy 7% 4 mph W 83%
3 AM 27° Mostly Clear 7% 3 mph W 84%
4 AM 27° Mostly Clear 7% 4 mph WNW 85%
5 AM 26° Mostly Clear 8% 4 mph WNW 85%
6 AM 26° Clear 8% 4 mph WNW 85%
7 AM 27° Clear 25% 5 mph WNW 80%
8 AM 29° Clear 25% 6 mph WNW 73%
9 AM 29° Clear 32% 6 mph WNW 67%
10 AM 30° Mostly Clear 41% 6 mph W 62%
11 AM 31° Mostly Clear 44% 6 mph W 57%
12 PM 32° Partly Cloudy 48% 6 mph WSW 53%
1 PM 34° Partly Cloudy 56% 6 mph WSW 53%
2 PM 34° Partly Cloudy 56% 6 mph WSW 54%
3 PM 33° Partly Cloudy 57% 6 mph WSW 54%
4 PM 33° Partly Cloudy 57% 5 mph WSW 57%
5 PM 33° Partly Cloudy 63% 5 mph WSW 60%
15-Day Forecast
Today
8/20
Clear
31%
26°
34°
Fri
8/21
Mostly Clear
64%
26°
36°
Sat
8/22
Partly Cloudy
15%
26°
36°
Sun
8/23
Mostly Clear
60%
26°
37°
Mon
8/24
Rain
64%
26°
34°
Tue
8/25
Rain
65%
26°
34°
Wed
8/26
Rain
70%
26°
35°
Thu
8/27
Rain
74%
25°
33°
Fri
8/28
Rain
73%
24°
34°
Sat
8/29
Rain
72%
25°
35°
Sun
8/30
Drizzle
47%
25°
34°
Mon
8/31
Drizzle
60%
25°
34°
Tue
9/1
Drizzle
60%
25°
33°
Wed
9/2
Drizzle
60%
25°
33°
Thu
9/3
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 9.4 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 34 52
Sat 53 Moderate 38 53
Sun 41 Good 35 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 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
SBCAPE847 J/kg
MLCAPE1102 J/kg
MUCAPE1310 J/kg
SBCIN-109 J/kg
MLCIN-59 J/kg
Lifted Index-2.4
Kinematics
0–6 km Shear19 kt
0–1 km Shear3 kt
Eff. Shear19 kt
0–1 km SRH14
0–3 km SRH45
Eff. SRH45
Storm Motion68° @ 14 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.4
Thermo & Levels
PWAT2.06 in
0–3 km LR7.1 °C/km
700–500 LR5.9 °C/km
Total Totals48.2
LCL839 hPa
LFC703 hPa
EL192 hPa
Freezing Lvl15,942 ft