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, 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, Southern Hancock, MS 7:00 PM

St. John the Baptist Parish, Louisiana, United States

Last updated: 9:50 AM CDT  ·  Refresh
28°C
Feels like 33°
Partly Cloudy
▲ 35°  /  ▼ 26°
Wind
5 mph WNW
Humidity
80%
Dew Point
25°
Pressure
29.94 inHg
Visibility
9 mi
UV Index
6.4
Cloud Cover
53%
Sunrise
6:42 AM
Sunset
7:17 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. John the Baptist Parish is currently partly cloudy at 28°C. Precipitation is likely — peak probability 64% around 5 PM. Atmospheric instability is elevated (CAPE up to 3120 J/kg) — isolated convective development possible. Sunrise: 6:42AM · Sunset: 7:17PM.

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, 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, Southern Hancock, MS
Expires 7:00 PM
44 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
36%
10 AM
30°
41%
11 AM
31°
43%
12 PM
32°
43%
1 PM
34°
54%
2 PM
34°
50%
3 PM
34°
47%
4 PM
33°
49%
5 PM
32°
63%
6 PM
30°
35%
7 PM
29°
21%
8 PM
29°
28%
9 PM
28°
25%
10 PM
28°
13%
11 PM
28°
12%
12 AM
27°
15%
1 AM
27°
15%
2 AM
27°
24%
3 AM
27°
24%
4 AM
27°
24%
5 AM
26°
24%
6 AM
26°
24%
7 AM
26°
34%
8 AM
27°
35%
7-Day Forecast
Today
35° 26°
Partly Cloudy with a 47% chance of rain.
Tue
34° 26°
Rain, 52% chance.
Wed
33° 25°
Rain, 90% chance.
Thu
33° 24°
Partly Cloudy with a 76% chance of rain.
Fri
34° 23°
Rain, 90% chance.
Sat
34° 24°
Rain, 82% chance.
Sun
35° 24°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 28° Partly Cloudy 36% 5 mph WNW 80%
10 AM 30° Partly Cloudy 41% 4 mph NW 72%
11 AM 31° Partly Cloudy 43% 4 mph NW 69%
12 PM 32° Mostly Clear 43% 4 mph NNW 66%
1 PM 34° Mostly Clear 54% 3 mph NNE 65%
2 PM 34° Mostly Clear 50% 3 mph N 64%
3 PM 34° Mostly Clear 47% 3 mph NNE 62%
4 PM 33° Partly Cloudy 49% 2 mph NE 66%
5 PM 32° Rain 63% 3 mph SE 72%
6 PM 30° Mostly Cloudy 35% 5 mph S 79%
7 PM 29° Mostly Cloudy 21% 4 mph S 81%
8 PM 29° Mostly Cloudy 28% 3 mph SSW 83%
9 PM 28° Partly Cloudy 25% 3 mph SSW 85%
10 PM 28° Mostly Clear 13% 3 mph S 86%
11 PM 28° Partly Cloudy 12% 4 mph SE 87%
12 AM 27° Partly Cloudy 15% 4 mph ESE 88%
1 AM 27° Partly Cloudy 15% 4 mph ESE 89%
2 AM 27° Partly Cloudy 24% 3 mph SE 90%
3 AM 27° Partly Cloudy 24% 3 mph SSE 92%
4 AM 27° Mostly Cloudy 24% 2 mph SE 92%
5 AM 26° Mostly Cloudy 24% 3 mph ESE 93%
6 AM 26° Haze 24% 3 mph E 93%
7 AM 26° Haze 34% 4 mph E 90%
8 AM 27° Haze 35% 4 mph E 87%
15-Day Forecast
Today
9/7
Partly Cloudy
47%
26°
35°
Tue
9/8
Rain
52%
26°
34°
Wed
9/9
Rain
90%
25°
33°
Thu
9/10
Partly Cloudy
76%
24°
33°
Fri
9/11
Rain
90%
23°
34°
Sat
9/12
Rain
82%
24°
34°
Sun
9/13
Drizzle
53%
24°
35°
Mon
9/14
Drizzle
42%
24°
34°
Tue
9/15
Rain
68%
23°
34°
Wed
9/16
Drizzle
44%
23°
34°
Thu
9/17
Drizzle
60%
23°
33°
Fri
9/18
Drizzle
60%
23°
34°
Sat
9/19
Drizzle
60%
22°
33°
Sun
9/20
Drizzle
60%
22°
33°
Mon
9/21
Drizzle
60%
22°
32°
44
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
44 AQI 8.0 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 44 Good 34 44
Wed 35 Good 35 34
Thu 31 Good 27 31
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 Sep 7, 13:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3025 J/kg
MLCAPE1971 J/kg
MUCAPE3025 J/kg
SBCIN-49 J/kg
MLCIN-57 J/kg
Lifted Index-6.6
Kinematics
0–6 km Shear12 kt
0–1 km Shear4 kt
Eff. Shear25 kt
0–1 km SRH23
0–3 km SRH32
Eff. SRH32
Storm Motion105° @ 13 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.2
Supercell1.2
K-Index38.3
Thermo & Levels
PWAT2.31 in
0–3 km LR6.0 °C/km
700–500 LR5.7 °C/km
Total Totals48.3
LCL966 hPa
LFC872 hPa
EL140 hPa
Freezing Lvl16,037 ft