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 Coastal Flood Warning — Lower St. Bernard, LA, Southeast St. Tammany, LA, Eastern Orleans, LA, Lower Plaquemines, LA, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 4:00 AM

Slidell, Louisiana

Last updated: 5:41 PM CDT  ·  Refresh
34°C
Feels like 39°
Partly Cloudy
▲ 35°  /  ▼ 24°
Wind
10 mph NNE
Humidity
51%
Dew Point
23°
Pressure
29.71 inHg
Visibility
10 mi
UV Index
5.5
Cloud Cover
32%
Sunrise
6:11 AM
Sunset
7:59 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Slidell is currently partly cloudy at 34°C. Precipitation is likely — peak probability 56% around 3 PM. Atmospheric instability is elevated (CAPE up to 1497 J/kg) — isolated convective development possible. Sunrise: 6:11AM · Sunset: 7:59PM.

53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
21%
6 PM
35°
29%
7 PM
33°
30%
8 PM
32°
31%
9 PM
30°
33%
10 PM
29°
33%
11 PM
28°
20%
12 AM
28°
15%
1 AM
27°
3%
2 AM
27°
10%
3 AM
26°
10%
4 AM
26°
13%
5 AM
24°
18%
6 AM
24°
17%
7 AM
25°
28%
8 AM
26°
42%
9 AM
26°
42%
10 AM
27°
46%
11 AM
27°
47%
12 PM
29°
47%
1 PM
30°
51%
2 PM
30°
55%
3 PM
30°
56%
4 PM
29°
53%
7-Day Forecast
Today
35° 24°
Partly Cloudy with a 31% chance of rain.
Wed
33° 24°
Mostly Cloudy with a 53% chance of rain.
Thu
33° 26°
Partly Cloudy with a 62% chance of rain.
Fri
33° 26°
Mostly Cloudy with a 48% chance of rain.
Sat
35° 25°
Mostly Cloudy with a 31% chance of rain.
Sun
35° 24°
Mostly Cloudy.
Mon
36° 25°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 34° Partly Cloudy 21% 10 mph NNE 51%
6 PM 35° Partly Cloudy 29% 8 mph NNE 54%
7 PM 33° Partly Cloudy 30% 6 mph NNE 62%
8 PM 32° Partly Cloudy 31% 5 mph NNE 69%
9 PM 30° Partly Cloudy 33% 6 mph NNE 74%
10 PM 29° Partly Cloudy 33% 6 mph NNE 76%
11 PM 28° Partly Cloudy 20% 7 mph NNE 77%
12 AM 28° Partly Cloudy 15% 8 mph N 79%
1 AM 27° Partly Cloudy 3% 8 mph N 80%
2 AM 27° Partly Cloudy 10% 9 mph N 80%
3 AM 26° Partly Cloudy 10% 10 mph N 81%
4 AM 26° Partly Cloudy 13% 11 mph N 82%
5 AM 24° Partly Cloudy 18% 11 mph N 83%
6 AM 24° Partly Cloudy 17% 11 mph N 84%
7 AM 25° Partly Cloudy 28% 12 mph N 84%
8 AM 26° Partly Cloudy 42% 12 mph N 82%
9 AM 26° Mostly Cloudy 42% 13 mph NNE 80%
10 AM 27° Mostly Cloudy 46% 13 mph NNE 79%
11 AM 27° Mostly Cloudy 47% 14 mph NNE 77%
12 PM 29° Mostly Cloudy 47% 14 mph NNE 76%
1 PM 30° Mostly Cloudy 51% 14 mph NNE 77%
2 PM 30° Mostly Cloudy 55% 14 mph NE 78%
3 PM 30° Mostly Cloudy 56% 14 mph NE 79%
4 PM 29° Mostly Cloudy 53% 14 mph NE 80%
15-Day Forecast
Today
7/21
Partly Cloudy
31%
24°
35°
Wed
7/22
Mostly Cloudy
53%
24°
33°
Thu
7/23
Partly Cloudy
62%
26°
33°
Fri
7/24
Mostly Cloudy
48%
26°
33°
Sat
7/25
Mostly Cloudy
31%
25°
35°
Sun
7/26
Mostly Cloudy
17%
24°
35°
Mon
7/27
Clear
16%
25°
36°
Tue
7/28
Mostly Clear
35%
26°
36°
Wed
7/29
Drizzle
60%
26°
36°
Thu
7/30
Drizzle
60%
25°
36°
Fri
7/31
Drizzle
54%
25°
34°
Sat
8/1
Drizzle
60%
24°
35°
Sun
8/2
Drizzle
60%
25°
34°
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, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2164 J/kg
MLCAPE1247 J/kg
MUCAPE2164 J/kg
SBCIN-47 J/kg
MLCIN0 J/kg
Lifted Index-3.2
Kinematics
0–6 km Shear16 kt
0–1 km Shear10 kt
Eff. Shear22 kt
0–1 km SRH-17
0–3 km SRH-33
Eff. SRH-33
Storm Motion4° @ 34 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.7
Thermo & Levels
PWAT2.05 in
0–3 km LR7.9 °C/km
700–500 LR4.4 °C/km
Total Totals42.8
LCL857 hPa
LFC834 hPa
EL138 hPa
Freezing Lvl18,094 ft