Extreme Heat Warning — St. James, LA, St. John The Baptist, LA, Upper St. Bernard, 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 Jefferson, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM Extreme Heat Warning — St. James, LA, St. John The Baptist, LA, Upper St. Bernard, 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 Jefferson, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, 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: 5:23 PM CDT  ·  Refresh
34°C
Feels like 40°
Mostly Clear
▲ 35°  /  ▼ 27°
Wind
6 mph SW
Humidity
55%
Dew Point
24°
Pressure
29.98 inHg
Visibility
10 mi
UV Index
5.7
Cloud Cover
24%
Sunrise
6:27 AM
Sunset
7:38 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Slidell is currently mostly clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3405 J/kg) — isolated convective development possible. Sunrise: 6:27AM · Sunset: 7:38PM.

Alerts

Extreme Heat Warning
St. James, LA, St. John The Baptist, LA, Upper St. Bernard, 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 Jefferson, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, 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
St. James, LA, St. John The Baptist, LA, Upper St. Bernard, 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 Jefferson, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
16%
6 PM
32°
30%
7 PM
31°
30%
8 PM
31°
30%
9 PM
31°
30%
10 PM
31°
30%
11 PM
30°
28%
12 AM
29°
19%
1 AM
29°
3%
2 AM
28°
3%
3 AM
28°
3%
4 AM
28°
5%
5 AM
27°
5%
6 AM
27°
5%
7 AM
27°
5%
8 AM
28°
11%
9 AM
28°
11%
10 AM
29°
20%
11 AM
31°
21%
12 PM
33°
21%
1 PM
34°
22%
2 PM
34°
26%
3 PM
34°
29%
4 PM
34°
29%
7-Day Forecast
Today
35° 27°
Mostly Clear with a 30% chance of rain.
Tue
37° 27°
Partly Cloudy with a 35% chance of rain.
Wed
36° 27°
Partly Cloudy with a 60% chance of rain.
Thu
34° 26°
Partly Cloudy with a 83% chance of rain.
Fri
36° 26°
Rain, 82% chance.
Sat
35° 25°
Drizzle, 60% chance.
Sun
35° 24°
Drizzle, 55% chance.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Clear 16% 6 mph SW 55%
6 PM 32° Partly Cloudy 30% 6 mph SW 63%
7 PM 31° Partly Cloudy 30% 5 mph SSW 67%
8 PM 31° Mostly Cloudy 30% 6 mph SSW 70%
9 PM 31° Mostly Cloudy 30% 6 mph SW 72%
10 PM 31° Mostly Cloudy 30% 7 mph SW 74%
11 PM 30° Partly Cloudy 28% 6 mph SW 76%
12 AM 29° Partly Cloudy 19% 7 mph SW 78%
1 AM 29° Partly Cloudy 3% 7 mph WSW 80%
2 AM 28° Partly Cloudy 3% 6 mph WSW 81%
3 AM 28° Mostly Cloudy 3% 6 mph WSW 81%
4 AM 28° Mostly Cloudy 5% 6 mph W 81%
5 AM 27° Mostly Cloudy 5% 5 mph W 81%
6 AM 27° Mostly Cloudy 5% 5 mph WNW 81%
7 AM 27° Mostly Cloudy 5% 6 mph WNW 79%
8 AM 28° Mostly Cloudy 11% 7 mph WNW 73%
9 AM 28° Mostly Cloudy 11% 8 mph WNW 66%
10 AM 29° Mostly Cloudy 20% 8 mph W 61%
11 AM 31° Mostly Cloudy 21% 8 mph W 58%
12 PM 33° Mostly Cloudy 21% 8 mph W 55%
1 PM 34° Mostly Cloudy 22% 8 mph W 53%
2 PM 34° Mostly Cloudy 26% 7 mph W 51%
3 PM 34° Partly Cloudy 29% 7 mph WSW 49%
4 PM 34° Partly Cloudy 29% 7 mph WSW 49%
15-Day Forecast
Today
8/17
Mostly Clear
30%
27°
35°
Tue
8/18
Partly Cloudy
35%
27°
37°
Wed
8/19
Partly Cloudy
60%
27°
36°
Thu
8/20
Partly Cloudy
83%
26°
34°
Fri
8/21
Rain
82%
26°
36°
Sat
8/22
Drizzle
60%
25°
35°
Sun
8/23
Drizzle
55%
24°
35°
Mon
8/24
Drizzle
60%
24°
36°
Tue
8/25
Drizzle
60%
24°
34°
Wed
8/26
Drizzle
60%
24°
35°
Thu
8/27
Drizzle
60%
25°
34°
Fri
8/28
Drizzle
60%
24°
34°
Sat
8/29
Drizzle
60%
24°
33°
Sun
8/30
Drizzle
60%
24°
33°
Mon
8/31
Drizzle
60%
24°
33°
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 11.0 µg/m³
O3
Ground-level ozone
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 55 Moderate 39 55
Wed 53 Moderate 40 53
Thu 51 Moderate 36 51
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 Mon Aug 17, 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
SBCAPE3285 J/kg
MLCAPE2282 J/kg
MUCAPE3285 J/kg
SBCIN-11 J/kg
MLCIN-31 J/kg
Lifted Index-6.9
Kinematics
0–6 km Shear5 kt
0–1 km Shear3 kt
Eff. Shear14 kt
0–1 km SRH6
0–3 km SRH57
Eff. SRH57
Storm Motion113° @ 11 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index37.7
Thermo & Levels
PWAT2.34 in
0–3 km LR7.5 °C/km
700–500 LR5.7 °C/km
Total Totals49.7
LCL879 hPa
LFC850 hPa
EL127 hPa
Freezing Lvl16,545 ft