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 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, Lower St. Bernard, LA, Northern Tangipahoa, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS 8:00 PM

Northern St. Tammany, LA

Last updated: 5:23 PM CDT  ·  Refresh
34°C
Feels like 42°
Partly Cloudy
▲ 36°  /  ▼ 25°
Wind
4 mph SSW
Humidity
56%
Dew Point
24°
Pressure
29.96 inHg
Visibility
10 mi
UV Index
5.8
Cloud Cover
39%
Sunrise
6:32 AM
Sunset
7:44 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Northern St. Tammany is currently partly cloudy at 35°C. Precipitation is likely — peak probability 61% around 6 PM. Atmospheric instability is elevated (CAPE up to 2844 J/kg) — isolated convective development possible. Sunrise: 6:32AM · Sunset: 7:44PM.

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
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, Lower St. Bernard, LA, Northern Tangipahoa, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS
Expires 8:00 PM
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
46%
6 PM
34°
60%
7 PM
33°
45%
8 PM
32°
44%
9 PM
31°
25%
10 PM
31°
25%
11 PM
29°
17%
12 AM
29°
15%
1 AM
28°
3%
2 AM
27°
8%
3 AM
27°
8%
4 AM
27°
16%
5 AM
26°
16%
6 AM
25°
21%
7 AM
26°
21%
8 AM
27°
20%
9 AM
27°
20%
10 AM
28°
20%
11 AM
30°
20%
12 PM
33°
12%
1 PM
35°
19%
2 PM
36°
22%
3 PM
36°
22%
4 PM
36°
43%
7-Day Forecast
Today
36° 25°
Partly Cloudy with a 46% chance of rain.
Tue
38° 25°
Mostly Cloudy with a 51% chance of rain.
Wed
38° 26°
Partly Cloudy with a 22% chance of rain.
Thu
37° 24°
Mostly Cloudy with a 45% chance of rain.
Fri
38° 24°
Drizzle, 64% chance.
Sat
38° 24°
Partly Cloudy with a 38% chance of rain.
Sun
39° 24°
Clear with a 24% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Partly Cloudy 46% 4 mph SSW 56%
6 PM 34° Mostly Cloudy 60% 6 mph S 69%
7 PM 33° Mostly Cloudy 45% 7 mph S 75%
8 PM 32° Partly Cloudy 44% 7 mph S 75%
9 PM 31° Partly Cloudy 25% 7 mph SSW 75%
10 PM 31° Partly Cloudy 25% 7 mph SW 75%
11 PM 29° Partly Cloudy 17% 6 mph SW 76%
12 AM 29° Partly Cloudy 15% 6 mph SW 77%
1 AM 28° Mostly Cloudy 3% 6 mph SW 78%
2 AM 27° Mostly Cloudy 8% 5 mph SW 80%
3 AM 27° Mostly Cloudy 8% 5 mph WSW 83%
4 AM 27° Mostly Cloudy 16% 5 mph WSW 84%
5 AM 26° Mostly Cloudy 16% 4 mph WSW 86%
6 AM 25° Mostly Cloudy 21% 4 mph W 88%
7 AM 26° Mostly Cloudy 21% 4 mph W 89%
8 AM 27° Mostly Cloudy 20% 6 mph W 85%
9 AM 27° Mostly Cloudy 20% 7 mph W 82%
10 AM 28° Mostly Cloudy 20% 7 mph W 77%
11 AM 30° Mostly Cloudy 20% 6 mph W 68%
12 PM 33° Partly Cloudy 12% 6 mph W 60%
1 PM 35° Partly Cloudy 19% 6 mph W 55%
2 PM 36° Partly Cloudy 22% 5 mph WSW 53%
3 PM 36° Mostly Cloudy 22% 5 mph WSW 51%
4 PM 36° Mostly Cloudy 43% 5 mph WSW 50%
15-Day Forecast
Today
8/17
Partly Cloudy
46%
25°
36°
Tue
8/18
Mostly Cloudy
51%
25°
38°
Wed
8/19
Partly Cloudy
22%
26°
38°
Thu
8/20
Mostly Cloudy
45%
24°
37°
Fri
8/21
Drizzle
64%
24°
38°
Sat
8/22
Partly Cloudy
38%
24°
38°
Sun
8/23
Clear
24%
24°
39°
Mon
8/24
Mostly Cloudy
49%
24°
39°
Tue
8/25
Drizzle
60%
24°
38°
Wed
8/26
Drizzle
60%
24°
38°
Thu
8/27
Drizzle
60%
24°
38°
Fri
8/28
Drizzle
60%
23°
38°
Sat
8/29
Clear
25%
23°
38°
Sun
8/30
Drizzle
60%
23°
38°
Mon
8/31
Drizzle
60%
23°
38°
51
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
51 AQI 9.3 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 51 Moderate 34 51
Wed 49 Good 31 49
Thu 44 Good 24 44
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
SBCAPE3342 J/kg
MLCAPE3341 J/kg
MUCAPE3560 J/kg
SBCIN-10 J/kg
MLCIN-14 J/kg
Lifted Index-7.1
Kinematics
0–6 km Shear2 kt
0–1 km Shear1 kt
Eff. Shear9 kt
0–1 km SRH4
0–3 km SRH4
Eff. SRH4
Storm Motion34° @ 16 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.3
Thermo & Levels
PWAT2.12 in
0–3 km LR7.9 °C/km
700–500 LR5.6 °C/km
Total Totals49.2
LCL867 hPa
LFC834 hPa
EL130 hPa
Freezing Lvl16,696 ft