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 Extreme 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, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM Extreme Heat Watch 8:00 PM

St. John the Baptist Parish, Louisiana, United States

Last updated: 4:38 PM CDT  ·  Refresh
34°C
Feels like 41°
Clear
▲ 36°  /  ▼ 24°
Wind
5 mph SSW
Humidity
53%
Dew Point
22°
Pressure
30.09 inHg
Visibility
10 mi
UV Index
7.1
Cloud Cover
1%
Sunrise
6:28 AM
Sunset
7:44 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. John the Baptist Parish is currently clear at 35°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2648 J/kg) — isolated convective development possible. Sunrise: 6:28AM · Sunset: 7:44PM.

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 8:00 PM
Extreme 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, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
Extreme Heat Watch
Expires 8:00 PM
56 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
3%
5 PM
36°
3%
6 PM
34°
3%
7 PM
33°
3%
8 PM
32°
3%
9 PM
30°
3%
10 PM
29°
3%
11 PM
29°
3%
12 AM
28°
3%
1 AM
27°
3%
2 AM
27°
3%
3 AM
27°
3%
4 AM
26°
5%
5 AM
24°
5%
6 AM
24°
5%
7 AM
25°
5%
8 AM
26°
20%
9 AM
28°
20%
10 AM
28°
20%
11 AM
31°
5%
12 PM
32°
5%
1 PM
32°
5%
2 PM
32°
5%
3 PM
34°
6%
7-Day Forecast
Today
36° 24°
Clear.
Sat
35° 24°
Mostly Clear with a 20% chance of rain.
Sun
37° 26°
Clear.
Mon
37° 26°
Clear with a 21% chance of rain.
Tue
38° 24°
Clear.
Wed
38° 24°
Drizzle, 50% chance.
Thu
38° 23°
Drizzle, 50% chance.
TimeTempConditionsPrecipWindHumidity
Now 34° Clear 3% 5 mph SSW 53%
5 PM 36° Clear 3% 5 mph SSW 54%
6 PM 34° Clear 3% 5 mph SSW 61%
7 PM 33° Clear 3% 5 mph SSW 68%
8 PM 32° Clear 3% 6 mph SSW 74%
9 PM 30° Clear 3% 6 mph SSW 80%
10 PM 29° Clear 3% 7 mph SW 84%
11 PM 29° Clear 3% 7 mph SW 88%
12 AM 28° Clear 3% 6 mph SW 90%
1 AM 27° Clear 3% 6 mph SW 92%
2 AM 27° Clear 3% 5 mph WSW 92%
3 AM 27° Clear 3% 4 mph WSW 93%
4 AM 26° Clear 5% 4 mph W 94%
5 AM 24° Mostly Clear 5% 4 mph W 94%
6 AM 24° Haze 5% 3 mph W 95%
7 AM 25° Haze 5% 3 mph WNW 93%
8 AM 26° Haze 20% 4 mph WNW 88%
9 AM 28° Partly Cloudy 20% 4 mph WNW 82%
10 AM 28° Mostly Clear 20% 4 mph WNW 76%
11 AM 31° Mostly Clear 5% 3 mph WNW 72%
12 PM 32° Mostly Clear 5% 3 mph WNW 68%
1 PM 32° Mostly Clear 5% 2 mph NW 65%
2 PM 32° Mostly Clear 5% 2 mph WNW 64%
3 PM 34° Mostly Clear 6% 2 mph N 62%
15-Day Forecast
Today
8/14
Clear
3%
24°
36°
Sat
8/15
Mostly Clear
20%
24°
35°
Sun
8/16
Clear
8%
26°
37°
Mon
8/17
Clear
21%
26°
37°
Tue
8/18
Clear
9%
24°
38°
Wed
8/19
Drizzle
50%
24°
38°
Thu
8/20
Drizzle
50%
23°
38°
Fri
8/21
Clear
60%
24°
39°
Sat
8/22
Drizzle
60%
24°
38°
Sun
8/23
Drizzle
60%
23°
38°
Mon
8/24
Drizzle
60%
23°
37°
Tue
8/25
Drizzle
60%
24°
37°
Wed
8/26
Drizzle
60%
24°
37°
Thu
8/27
Drizzle
60%
24°
38°
Fri
8/28
Drizzle
60%
24°
38°
56
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
56 AQI 11.7 µg/m³
O3
Ground-level ozone
31 AQI 33 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 56 Moderate 31 56
Sun 53 Moderate 32 53
Mon 53 Moderate 31 53
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 Fri Aug 14, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1756 J/kg
MLCAPE703 J/kg
MUCAPE1756 J/kg
SBCIN-59 J/kg
MLCIN-210 J/kg
Lifted Index-4.5
Kinematics
0–6 km Shear10 kt
0–1 km Shear1 kt
Eff. Shear10 kt
0–1 km SRH3
0–3 km SRH16
Eff. SRH16
Storm Motion131° @ 16 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index16.9
Thermo & Levels
PWAT1.34 in
0–3 km LR7.1 °C/km
700–500 LR6.5 °C/km
Total Totals42.0
LCL843 hPa
LFC681 hPa
EL162 hPa
Freezing Lvl16,952 ft