Excessive Heat Warning — St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower 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, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM

St. John the Baptist Parish, Louisiana, United States

Last updated: 5:21 PM CDT  ·  Refresh
33°C
Feels like 42°
Partly Cloudy
▲ 34°  /  ▼ 26°
Wind
6 mph W
Humidity
64%
Dew Point
24°
Pressure
29.87 inHg
Visibility
10 mi
UV Index
5.5
Cloud Cover
54%
Sunrise
6:19 AM
Sunset
7:57 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. John the Baptist Parish is currently partly cloudy at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2172 J/kg) — isolated convective development possible. Sunrise: 6:19AM · Sunset: 7:57PM.

Alerts

Excessive Heat Warning
St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower 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, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
56 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
11%
6 PM
33°
23%
7 PM
32°
23%
8 PM
31°
23%
9 PM
29°
25%
10 PM
29°
25%
11 PM
28°
25%
12 AM
28°
17%
1 AM
27°
17%
2 AM
27°
21%
3 AM
27°
13%
4 AM
27°
13%
5 AM
26°
14%
6 AM
26°
8%
7 AM
26°
8%
8 AM
28°
14%
9 AM
29°
26%
10 AM
30°
26%
11 AM
31°
27%
12 PM
32°
27%
1 PM
33°
35%
2 PM
32°
39%
3 PM
32°
39%
4 PM
32°
39%
7-Day Forecast
Today
34° 26°
Partly Cloudy with a 25% chance of rain.
Thu
35° 26°
Partly Cloudy with a 44% chance of rain.
Fri
34° 26°
Mostly Cloudy with a 50% chance of rain.
Sat
33° 26°
Partly Cloudy with a 71% chance of rain.
Sun
33° 24°
Drizzle, 79% chance.
Mon
34° 24°
Rain, 74% chance.
Tue
35° 24°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Partly Cloudy 11% 6 mph W 64%
6 PM 33° Partly Cloudy 23% 7 mph W 73%
7 PM 32° Partly Cloudy 23% 7 mph W 80%
8 PM 31° Mostly Cloudy 23% 6 mph WSW 81%
9 PM 29° Overcast 25% 6 mph WSW 82%
10 PM 29° Mostly Cloudy 25% 6 mph SW 84%
11 PM 28° Mostly Cloudy 25% 6 mph WSW 85%
12 AM 28° Mostly Cloudy 17% 6 mph WSW 87%
1 AM 27° Partly Cloudy 17% 6 mph WSW 89%
2 AM 27° Partly Cloudy 21% 6 mph WSW 90%
3 AM 27° Partly Cloudy 13% 6 mph W 91%
4 AM 27° Partly Cloudy 13% 6 mph W 92%
5 AM 26° Partly Cloudy 14% 6 mph W 92%
6 AM 26° Partly Cloudy 8% 6 mph W 92%
7 AM 26° Partly Cloudy 8% 6 mph W 89%
8 AM 28° Partly Cloudy 14% 8 mph W 84%
9 AM 29° Partly Cloudy 26% 8 mph W 78%
10 AM 30° Partly Cloudy 26% 8 mph W 72%
11 AM 31° Partly Cloudy 27% 8 mph W 69%
12 PM 32° Partly Cloudy 27% 8 mph W 66%
1 PM 33° Partly Cloudy 35% 7 mph W 65%
2 PM 32° Partly Cloudy 39% 7 mph W 67%
3 PM 32° Partly Cloudy 39% 8 mph WNW 69%
4 PM 32° Mostly Cloudy 39% 8 mph WNW 70%
15-Day Forecast
Today
7/29
Partly Cloudy
25%
26°
34°
Thu
7/30
Partly Cloudy
44%
26°
35°
Fri
7/31
Mostly Cloudy
50%
26°
34°
Sat
8/1
Partly Cloudy
71%
26°
33°
Sun
8/2
Drizzle
79%
24°
33°
Mon
8/3
Rain
74%
24°
34°
Tue
8/4
Drizzle
60%
24°
35°
Wed
8/5
Drizzle
60%
24°
36°
Thu
8/6
Drizzle
60%
24°
36°
Fri
8/7
Drizzle
60%
24°
36°
Sat
8/8
Drizzle
60%
24°
35°
Sun
8/9
Drizzle
60%
24°
36°
Mon
8/10
Drizzle
60%
24°
36°
Tue
8/11
Drizzle
60%
24°
36°
Wed
8/12
Drizzle
60%
24°
36°
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 12.1 µg/m³
O3
Ground-level ozone
45 AQI 50 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 56 Moderate 45 56
Fri 56 Moderate 44 56
Sat 46 Good 25 46
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 Jul 29, 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
SBCAPE2913 J/kg
MLCAPE1700 J/kg
MUCAPE2913 J/kg
SBCIN0 J/kg
MLCIN-0 J/kg
Lifted Index-6.3
Kinematics
0–6 km Shear10 kt
0–1 km Shear4 kt
Eff. Shear12 kt
0–1 km SRH9
0–3 km SRH-5
Eff. SRH-5
Storm Motion304° @ 18 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index24.9
Thermo & Levels
PWAT2.04 in
0–3 km LR7.2 °C/km
700–500 LR5.6 °C/km
Total Totals44.8
LCL892 hPa
LFC1011 hPa
EL127 hPa
Freezing Lvl16,975 ft