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

Southwestern St. Tammany, LA

Last updated: 5:24 PM CDT  ·  Refresh
34°C
Feels like 42°
Partly Cloudy
▲ 34°  /  ▼ 26°
Wind
7 mph SW
Humidity
57%
Dew Point
24°
Pressure
29.89 inHg
Visibility
10 mi
UV Index
5.8
Cloud Cover
38%
Sunrise
6:29 AM
Sunset
7:49 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Southwestern St. Tammany is currently partly cloudy at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2930 J/kg) — isolated convective development possible. Sunrise: 6:29AM · Sunset: 7:49PM.

24 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
9%
6 PM
34°
19%
7 PM
33°
19%
8 PM
32°
19%
9 PM
31°
19%
10 PM
30°
19%
11 PM
29°
11%
12 AM
29°
9%
1 AM
28°
3%
2 AM
28°
3%
3 AM
27°
3%
4 AM
27°
3%
5 AM
26°
3%
6 AM
26°
3%
7 AM
26°
3%
8 AM
28°
10%
9 AM
29°
13%
10 AM
30°
14%
11 AM
31°
14%
12 PM
34°
14%
1 PM
35°
14%
2 PM
35°
14%
3 PM
35°
15%
4 PM
35°
15%
7-Day Forecast
Today
34° 26°
Partly Cloudy.
Thu
37° 26°
Partly Cloudy.
Fri
38° 24°
Mostly Clear.
Sat
38° 24°
Clear with a 45% chance of rain.
Sun
39° 24°
Drizzle, 60% chance.
Mon
38° 24°
Partly Cloudy with a 28% chance of rain.
Tue
38° 24°
Partly Cloudy with a 24% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Partly Cloudy 9% 7 mph SW 57%
6 PM 34° Mostly Clear 19% 8 mph SSW 62%
7 PM 33° Mostly Clear 19% 8 mph SSW 66%
8 PM 32° Mostly Clear 19% 7 mph SSW 71%
9 PM 31° Mostly Clear 19% 6 mph SSW 76%
10 PM 30° Mostly Clear 19% 6 mph SSW 80%
11 PM 29° Mostly Clear 11% 6 mph SSW 82%
12 AM 29° Mostly Clear 9% 6 mph SSW 85%
1 AM 28° Clear 3% 5 mph SSW 87%
2 AM 28° Mostly Clear 3% 5 mph SSW 88%
3 AM 27° Partly Cloudy 3% 4 mph SSW 90%
4 AM 27° Partly Cloudy 3% 4 mph SSW 91%
5 AM 26° Partly Cloudy 3% 4 mph SSW 92%
6 AM 26° Partly Cloudy 3% 4 mph SSW 92%
7 AM 26° Partly Cloudy 3% 4 mph SW 91%
8 AM 28° Partly Cloudy 10% 6 mph SW 84%
9 AM 29° Partly Cloudy 13% 7 mph SW 76%
10 AM 30° Partly Cloudy 14% 7 mph SW 69%
11 AM 31° Mostly Clear 14% 7 mph SW 62%
12 PM 34° Mostly Clear 14% 7 mph SW 56%
1 PM 35° Mostly Clear 14% 7 mph SW 52%
2 PM 35° Mostly Clear 14% 7 mph SW 51%
3 PM 35° Partly Cloudy 15% 7 mph SW 50%
4 PM 35° Partly Cloudy 15% 7 mph SSW 50%
15-Day Forecast
Today
8/12
Partly Cloudy
19%
26°
34°
Thu
8/13
Partly Cloudy
16%
26°
37°
Fri
8/14
Mostly Clear
3%
24°
38°
Sat
8/15
Clear
45%
24°
38°
Sun
8/16
Drizzle
60%
24°
39°
Mon
8/17
Partly Cloudy
28%
24°
38°
Tue
8/18
Partly Cloudy
24%
24°
38°
Wed
8/19
Mostly Clear
35%
23°
39°
Thu
8/20
Drizzle
50%
23°
39°
Fri
8/21
Partly Cloudy
51%
23°
40°
Sat
8/22
Drizzle
60%
24°
39°
Sun
8/23
Drizzle
60%
24°
38°
Mon
8/24
Drizzle
60%
23°
37°
Tue
8/25
Drizzle
60%
23°
38°
Wed
8/26
Drizzle
60%
23°
37°
24
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
21 AQI 3.7 µg/m³
O3
Ground-level ozone
Dominant
24 AQI 27 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 24 Good 24 21
Fri 33 Good 22 33
Sat 51 Moderate 27 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 Wed Aug 12, 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
SBCAPE3663 J/kg
MLCAPE3701 J/kg
MUCAPE3814 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-6.8
Kinematics
0–6 km Shear4 kt
0–1 km Shear2 kt
Eff. Shear6 kt
0–1 km SRH10
0–3 km SRH5
Eff. SRH5
Storm Motion347° @ 12 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.6
Thermo & Levels
PWAT2.03 in
0–3 km LR7.9 °C/km
700–500 LR5.3 °C/km
Total Totals47.7
LCL870 hPa
LFC1012 hPa
EL141 hPa
Freezing Lvl16,893 ft