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 7:00 PM

Slidell, Louisiana

Last updated: 10:58 AM CDT  ·  Refresh
31°C
Feels like 35°
Mostly Clear
▲ 36°  /  ▼ 24°
Wind
7 mph N
Humidity
59%
Dew Point
23°
Pressure
29.82 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 31°C. Precipitation is likely — peak probability 56% around 10 AM. Atmospheric instability is elevated (CAPE up to 1160 J/kg) — isolated convective development possible. Sunrise: 6:11AM · Sunset: 7:59PM.

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 7:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
3%
11 AM
31°
21%
12 PM
32°
14%
1 PM
34°
16%
2 PM
34°
11%
3 PM
34°
16%
4 PM
34°
17%
5 PM
36°
22%
6 PM
34°
17%
7 PM
32°
17%
8 PM
31°
13%
9 PM
29°
9%
10 PM
28°
9%
11 PM
28°
7%
12 AM
27°
7%
1 AM
27°
12%
2 AM
26°
12%
3 AM
26°
21%
4 AM
26°
29%
5 AM
24°
29%
6 AM
24°
30%
7 AM
25°
34%
8 AM
26°
39%
9 AM
27°
39%
7-Day Forecast
Today
36° 24°
Mostly Clear.
Wed
32° 24°
Rain, 69% chance.
Thu
34° 26°
Mostly Clear with a 70% chance of rain.
Fri
34° 25°
Mostly Clear with a 60% chance of rain.
Sat
34° 25°
Rain, 69% chance.
Sun
34° 25°
Drizzle, 51% chance.
Mon
36° 25°
Clear with a 22% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 31° Mostly Clear 3% 7 mph N 59%
11 AM 31° Mostly Clear 21% 8 mph N 56%
12 PM 32° Partly Cloudy 14% 9 mph N 53%
1 PM 34° Mostly Clear 16% 10 mph N 50%
2 PM 34° Mostly Clear 11% 11 mph N 48%
3 PM 34° Clear 16% 12 mph N 46%
4 PM 34° Mostly Clear 17% 10 mph NNE 49%
5 PM 36° Partly Cloudy 22% 9 mph NNE 52%
6 PM 34° Partly Cloudy 17% 7 mph NNE 55%
7 PM 32° Partly Cloudy 17% 6 mph NNE 63%
8 PM 31° Partly Cloudy 13% 6 mph NNE 70%
9 PM 29° Partly Cloudy 9% 6 mph NNE 76%
10 PM 28° Partly Cloudy 9% 7 mph NNE 78%
11 PM 28° Partly Cloudy 7% 8 mph N 79%
12 AM 27° Partly Cloudy 7% 8 mph N 81%
1 AM 27° Partly Cloudy 12% 8 mph N 82%
2 AM 26° Partly Cloudy 12% 9 mph N 83%
3 AM 26° Partly Cloudy 21% 9 mph N 84%
4 AM 26° Partly Cloudy 29% 10 mph N 85%
5 AM 24° Partly Cloudy 29% 10 mph N 85%
6 AM 24° Partly Cloudy 30% 11 mph N 86%
7 AM 25° Partly Cloudy 34% 11 mph NNE 84%
8 AM 26° Partly Cloudy 39% 11 mph NNE 83%
9 AM 27° Rain 39% 12 mph NNE 81%
15-Day Forecast
Today
7/21
Mostly Clear
17%
24°
36°
Wed
7/22
Rain
69%
24°
32°
Thu
7/23
Mostly Clear
70%
26°
34°
Fri
7/24
Mostly Clear
60%
25°
34°
Sat
7/25
Rain
69%
25°
34°
Sun
7/26
Drizzle
51%
25°
34°
Mon
7/27
Clear
22%
25°
36°
Tue
7/28
Clear
18%
25°
37°
Wed
7/29
Thunderstorm
44%
26°
37°
Thu
7/30
Thunderstorm
44%
26°
36°
Fri
7/31
Drizzle
60%
26°
36°
Sat
8/1
Drizzle
60%
25°
34°
Sun
8/2
Rain
90%
25°
34°
Mon
8/3
Rain
90%
25°
34°
Tue
8/4
Rain
90%
24°
34°
55
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
55 AQI 11.2 µg/m³
O3
Ground-level ozone
29 AQI 31 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 55 Moderate 29 55
Thu 33 Good 31 33
Fri 52 Moderate 31 52
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, 14:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1603 J/kg
MLCAPE397 J/kg
MUCAPE1603 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-2.6
Kinematics
0–6 km Shear21 kt
0–1 km Shear12 kt
Eff. Shear25 kt
0–1 km SRH-25
0–3 km SRH-42
Eff. SRH-42
Storm Motion355° @ 32 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.2
Thermo & Levels
PWAT1.96 in
0–3 km LR6.6 °C/km
700–500 LR4.9 °C/km
Total Totals39.9
LCL902 hPa
LFC1010 hPa
EL162 hPa
Freezing Lvl17,644 ft