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, Central Plaquemines, LA, Central Jefferson, 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: 1:39 AM CDT  ·  Refresh
27°C
Feels like 30°
Clear
▲ 36°  /  ▼ 26°
Wind
6 mph WSW
Humidity
89%
Dew Point
25°
Pressure
29.88 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
1%
Sunrise
6:18 AM
Sunset
7:58 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. John the Baptist Parish is currently clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2104 J/kg) — isolated convective development possible. Sunrise: 6:18AM · Sunset: 7:58PM.

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, Central Plaquemines, LA, Central Jefferson, 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
39 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
13%
2 AM
27°
13%
3 AM
27°
12%
4 AM
27°
12%
5 AM
26°
12%
6 AM
25°
12%
7 AM
26°
12%
8 AM
28°
13%
9 AM
30°
13%
10 AM
31°
5%
11 AM
33°
5%
12 PM
33°
5%
1 PM
35°
5%
2 PM
36°
5%
3 PM
36°
5%
4 PM
36°
5%
5 PM
35°
5%
6 PM
34°
5%
7 PM
33°
5%
8 PM
32°
5%
9 PM
31°
5%
10 PM
30°
3%
11 PM
30°
3%
12 AM
29°
3%
7-Day Forecast
Today
36° 26°
Mostly Clear.
Wed
37° 26°
Partly Cloudy.
Thu
35° 26°
Mostly Cloudy with a 83% chance of rain.
Fri
35° 26°
Partly Cloudy with a 63% chance of rain.
Sat
35° 24°
Thunderstorm, 51% chance.
Sun
35° 24°
Heavy Rain, 90% chance.
Mon
37° 24°
Drizzle, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Clear 13% 6 mph WSW 89%
2 AM 27° Clear 13% 6 mph W 90%
3 AM 27° Clear 12% 6 mph W 90%
4 AM 27° Clear 12% 6 mph W 90%
5 AM 26° Clear 12% 7 mph W 90%
6 AM 25° Mostly Clear 12% 7 mph W 90%
7 AM 26° Mostly Clear 12% 8 mph WNW 86%
8 AM 28° Partly Cloudy 13% 9 mph WNW 80%
9 AM 30° Partly Cloudy 13% 9 mph WNW 73%
10 AM 31° Mostly Clear 5% 8 mph WNW 68%
11 AM 33° Clear 5% 8 mph WNW 63%
12 PM 33° Mostly Clear 5% 7 mph WNW 58%
1 PM 35° Mostly Clear 5% 6 mph W 55%
2 PM 36° Mostly Clear 5% 6 mph W 54%
3 PM 36° Mostly Clear 5% 6 mph WSW 53%
4 PM 36° Mostly Clear 5% 6 mph WSW 56%
5 PM 35° Clear 5% 6 mph WSW 60%
6 PM 34° Clear 5% 7 mph WSW 65%
7 PM 33° Clear 5% 7 mph WSW 70%
8 PM 32° Clear 5% 7 mph WSW 74%
9 PM 31° Clear 5% 7 mph WSW 78%
10 PM 30° Clear 3% 7 mph WSW 80%
11 PM 30° Mostly Clear 3% 8 mph WSW 82%
12 AM 29° Partly Cloudy 3% 8 mph WSW 84%
15-Day Forecast
Today
7/28
Mostly Clear
13%
26°
36°
Wed
7/29
Partly Cloudy
15%
26°
37°
Thu
7/30
Mostly Cloudy
83%
26°
35°
Fri
7/31
Partly Cloudy
63%
26°
35°
Sat
8/1
Thunderstorm
51%
24°
35°
Sun
8/2
Heavy Rain
90%
24°
35°
Mon
8/3
Drizzle
63%
24°
37°
Tue
8/4
Rain
68%
24°
37°
Wed
8/5
Rain
68%
24°
37°
Thu
8/6
Drizzle
51%
24°
37°
Fri
8/7
Drizzle
60%
24°
36°
Sat
8/8
Drizzle
60%
24°
36°
Sun
8/9
Drizzle
60%
24°
36°
Mon
8/10
Drizzle
60%
24°
37°
Tue
8/11
Drizzle
60%
24°
37°
39
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
39 AQI 7.0 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 39 Good 36 39
Wed 47 Good 38 47
Thu 55 Moderate 36 55
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 Tue Jul 28, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1474 J/kg
MLCAPE1256 J/kg
MUCAPE1474 J/kg
SBCIN-134 J/kg
MLCIN0 J/kg
Lifted Index-2.9
Kinematics
0–6 km Shear26 kt
0–1 km Shear5 kt
Eff. Shear26 kt
0–1 km SRH9
0–3 km SRH-12
Eff. SRH-12
Storm Motion333° @ 17 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.0
K-Index25.0
Thermo & Levels
PWAT1.75 in
0–3 km LR5.1 °C/km
700–500 LR5.1 °C/km
Total Totals41.0
LCL981 hPa
LFC795 hPa
EL163 hPa
Freezing Lvl17,362 ft