Storm Surge Watch 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

Slidell, Louisiana

Last updated: 2:57 PM CDT  ·  Refresh
34°C
Feels like 39°
Mostly Clear
▲ 36°  /  ▼ 24°
Wind
12 mph N
Humidity
49%
Dew Point
24°
Pressure
29.75 inHg
Visibility
10 mi
UV Index
9.1
Cloud Cover
11%
Sunrise
6:11 AM
Sunset
7:59 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 64% around 2 PM. Atmospheric instability is elevated (CAPE up to 1557 J/kg) — isolated convective development possible. Sunrise: 6:11AM · Sunset: 7:59PM.

Alerts

Storm Surge Watch
Expires
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
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
18%
3 PM
34°
20%
4 PM
34°
23%
5 PM
36°
27%
6 PM
34°
14%
7 PM
32°
16%
8 PM
31°
14%
9 PM
29°
7%
10 PM
28°
7%
11 PM
28°
7%
12 AM
27°
7%
1 AM
27°
9%
2 AM
26°
15%
3 AM
26°
15%
4 AM
26°
25%
5 AM
24°
25%
6 AM
24°
25%
7 AM
25°
36%
8 AM
26°
42%
9 AM
26°
46%
10 AM
27°
47%
11 AM
27°
47%
12 PM
27°
48%
1 PM
28°
56%
7-Day Forecast
Today
36° 24°
Mostly Clear with a 27% chance of rain.
Wed
33° 24°
Rain, 63% chance.
Thu
34° 26°
Mostly Clear with a 50% chance of rain.
Fri
34° 26°
Mostly Clear with a 52% chance of rain.
Sat
36° 25°
Clear with a 35% chance of rain.
Sun
36° 24°
Clear.
Mon
36° 25°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Clear 18% 12 mph N 49%
3 PM 34° Clear 20% 12 mph NNE 47%
4 PM 34° Mostly Clear 23% 10 mph NNE 49%
5 PM 36° Partly Cloudy 27% 9 mph NNE 52%
6 PM 34° Partly Cloudy 14% 8 mph NNE 55%
7 PM 32° Partly Cloudy 16% 7 mph NNE 64%
8 PM 31° Partly Cloudy 14% 7 mph NNE 71%
9 PM 29° Partly Cloudy 7% 7 mph NNE 78%
10 PM 28° Partly Cloudy 7% 8 mph NNE 79%
11 PM 28° Partly Cloudy 7% 8 mph N 81%
12 AM 27° Partly Cloudy 7% 9 mph N 82%
1 AM 27° Partly Cloudy 9% 10 mph N 82%
2 AM 26° Partly Cloudy 15% 10 mph N 82%
3 AM 26° Partly Cloudy 15% 11 mph N 83%
4 AM 26° Partly Cloudy 25% 11 mph N 84%
5 AM 24° Partly Cloudy 25% 12 mph N 85%
6 AM 24° Partly Cloudy 25% 12 mph N 86%
7 AM 25° Partly Cloudy 36% 12 mph NNE 84%
8 AM 26° Partly Cloudy 42% 13 mph NNE 83%
9 AM 26° Rain 46% 13 mph NNE 83%
10 AM 27° Rain 47% 13 mph NNE 82%
11 AM 27° Rain 47% 13 mph NE 82%
12 PM 27° Partly Cloudy 48% 13 mph NE 82%
1 PM 28° Rain 56% 13 mph NE 81%
15-Day Forecast
Today
7/21
Mostly Clear
27%
24°
36°
Wed
7/22
Rain
63%
24°
33°
Thu
7/23
Mostly Clear
50%
26°
34°
Fri
7/24
Mostly Clear
52%
26°
34°
Sat
7/25
Clear
35%
25°
36°
Sun
7/26
Clear
9%
24°
36°
Mon
7/27
Clear
19%
25°
36°
Tue
7/28
Clear
25%
26°
37°
Wed
7/29
Drizzle
60%
26°
37°
Thu
7/30
Drizzle
60%
25°
36°
Fri
7/31
Drizzle
60%
25°
34°
Sat
8/1
Drizzle
60%
24°
35°
Sun
8/2
Drizzle
60%
24°
35°
Mon
8/3
Drizzle
60%
24°
33°
Tue
8/4
Drizzle
60%
24°
34°
53
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
53 AQI 10.2 µg/m³
O3
Ground-level ozone
30 AQI 32 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 53 Moderate 30 53
Thu 35 Good 33 35
Fri 48 Good 31 48
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
SBCAPE2534 J/kg
MLCAPE1679 J/kg
MUCAPE2534 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.1
Kinematics
0–6 km Shear18 kt
0–1 km Shear7 kt
Eff. Shear29 kt
0–1 km SRH-13
0–3 km SRH-37
Eff. SRH-37
Storm Motion356° @ 33 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.7
Thermo & Levels
PWAT2.06 in
0–3 km LR7.8 °C/km
700–500 LR4.8 °C/km
Total Totals41.9
LCL859 hPa
LFC1007 hPa
EL130 hPa
Freezing Lvl17,871 ft