Excessive Heat Watch 8:00 PM Excessive 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: 10:08 PM CDT  ·  Refresh
29°C
Feels like 35°
Clear
▲ 36°  /  ▼ 25°
Wind
6 mph SSW
Humidity
80%
Dew Point
25°
Pressure
30.11 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
2%
Sunrise
6:29 AM
Sunset
7:43 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. John the Baptist Parish is currently clear at 29°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2547 J/kg) — isolated convective development possible. Sunrise: 6:29AM · Sunset: 7:43PM.

51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
4%
11 PM
29°
16%
12 AM
28°
16%
1 AM
27°
4%
2 AM
27°
4%
3 AM
27°
4%
4 AM
27°
15%
5 AM
25°
16%
6 AM
25°
16%
7 AM
26°
16%
8 AM
27°
21%
9 AM
29°
26%
10 AM
31°
34%
11 AM
32°
34%
12 PM
33°
35%
1 PM
35°
41%
2 PM
35°
39%
3 PM
36°
44%
4 PM
35°
41%
5 PM
35°
42%
6 PM
34°
42%
7 PM
33°
42%
8 PM
32°
39%
9 PM
29°
43%
7-Day Forecast
Tonight
36° 25°
Clear.
Sun
36° 25°
Mostly Clear with a 41% chance of rain.
Mon
38° 26°
Clear with a 38% chance of rain.
Tue
38° 26°
Clear with a 44% chance of rain.
Wed
39° 24°
Rain, 65% chance.
Thu
39° 24°
Drizzle, 51% chance.
Fri
39° 24°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 29° Clear 4% 6 mph SSW 80%
11 PM 29° Clear 16% 7 mph SSW 86%
12 AM 28° Clear 16% 6 mph SW 90%
1 AM 27° Clear 4% 5 mph SW 92%
2 AM 27° Clear 4% 4 mph SW 93%
3 AM 27° Clear 4% 4 mph WSW 94%
4 AM 27° Clear 15% 4 mph WSW 94%
5 AM 25° Clear 16% 4 mph W 94%
6 AM 25° Mostly Clear 16% 4 mph WNW 93%
7 AM 26° Mostly Clear 16% 4 mph NW 92%
8 AM 27° Mostly Clear 21% 6 mph NW 85%
9 AM 29° Clear 26% 6 mph NW 76%
10 AM 31° Clear 34% 5 mph NW 72%
11 AM 32° Mostly Clear 34% 3 mph NW 67%
12 PM 33° Mostly Clear 35% 3 mph NNW 62%
1 PM 35° Mostly Clear 41% 3 mph N 58%
2 PM 35° Mostly Clear 39% 3 mph SE 57%
3 PM 36° Mostly Clear 44% 4 mph SSE 56%
4 PM 35° Mostly Clear 41% 4 mph SSE 55%
5 PM 35° Mostly Clear 42% 5 mph S 61%
6 PM 34° Mostly Clear 42% 5 mph S 67%
7 PM 33° Mostly Clear 42% 6 mph S 72%
8 PM 32° Mostly Clear 39% 5 mph SSW 73%
9 PM 29° Mostly Clear 43% 6 mph SW 74%
15-Day Forecast
Today
8/15
Clear
4%
25°
36°
Sun
8/16
Mostly Clear
41%
25°
36°
Mon
8/17
Clear
38%
26°
38°
Tue
8/18
Clear
44%
26°
38°
Wed
8/19
Rain
65%
24°
39°
Thu
8/20
Drizzle
51%
24°
39°
Fri
8/21
Rain
63%
24°
39°
Sat
8/22
Rain
63%
24°
38°
Sun
8/23
Rain
69%
23°
37°
Mon
8/24
Drizzle
44%
23°
38°
Tue
8/25
Drizzle
51%
23°
37°
Wed
8/26
Drizzle
60%
24°
38°
Thu
8/27
Drizzle
60%
24°
38°
Fri
8/28
Drizzle
60%
24°
37°
Sat
8/29
Drizzle
60%
24°
37°
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 9.4 µg/m³
O3
Ground-level ozone
32 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 51 Moderate 32 51
Mon 53 Moderate 32 53
Tue 54 Moderate 34 54
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 Sun Aug 16, 01:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2260 J/kg
MLCAPE1168 J/kg
MUCAPE2260 J/kg
SBCIN-130 J/kg
MLCIN-127 J/kg
Lifted Index-5.9
Kinematics
0–6 km Shear19 kt
0–1 km Shear5 kt
Eff. Shear15 kt
0–1 km SRH27
0–3 km SRH62
Eff. SRH62
Storm Motion91° @ 18 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index8.3
Thermo & Levels
PWAT1.49 in
0–3 km LR5.3 °C/km
700–500 LR6.5 °C/km
Total Totals46.3
LCL954 hPa
LFC824 hPa
EL147 hPa
Freezing Lvl16,857 ft