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St. John the Baptist Parish, Louisiana, United States

Last updated: 6:10 PM CDT  ·  Refresh
31°C
Feels like 37°
Partly Cloudy
▲ 34°  /  ▼ 25°
Wind
8 mph SSW
Humidity
69%
Dew Point
25°
Pressure
29.94 inHg
Visibility
10 mi
UV Index
4.3
Cloud Cover
37%
Sunrise
6:27 AM
Sunset
7:46 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. John the Baptist Parish is currently partly cloudy at 31°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2932 J/kg) — isolated convective development possible. Sunrise: 6:27AM · Sunset: 7:46PM.

35 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
17%
7 PM
31°
19%
8 PM
31°
19%
9 PM
29°
19%
10 PM
29°
16%
11 PM
28°
16%
12 AM
28°
16%
1 AM
27°
7%
2 AM
27°
7%
3 AM
27°
8%
4 AM
27°
10%
5 AM
26°
10%
6 AM
26°
5%
7 AM
26°
5%
8 AM
27°
5%
9 AM
29°
11%
10 AM
30°
13%
11 AM
31°
13%
12 PM
32°
13%
1 PM
33°
13%
2 PM
33°
17%
3 PM
33°
17%
4 PM
33°
15%
5 PM
33°
16%
7-Day Forecast
Tonight
34° 25°
Partly Cloudy.
Thu
34° 26°
Mostly Clear.
Fri
36° 24°
Partly Cloudy.
Sat
36° 24°
Clear with a 21% chance of rain.
Sun
38° 25°
Mostly Clear with a 25% chance of rain.
Mon
38° 24°
Partly Cloudy with a 25% chance of rain.
Tue
38° 24°
Mostly Cloudy with a 24% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 31° Partly Cloudy 17% 8 mph SSW 69%
7 PM 31° Partly Cloudy 19% 8 mph SSW 74%
8 PM 31° Partly Cloudy 19% 8 mph SSW 78%
9 PM 29° Mostly Clear 19% 7 mph SW 81%
10 PM 29° Mostly Clear 16% 7 mph SW 84%
11 PM 28° Mostly Clear 16% 7 mph SSW 87%
12 AM 28° Mostly Clear 16% 7 mph SSW 89%
1 AM 27° Mostly Clear 7% 7 mph SSW 91%
2 AM 27° Mostly Clear 7% 6 mph SW 91%
3 AM 27° Mostly Clear 8% 6 mph SW 92%
4 AM 27° Mostly Clear 10% 6 mph SW 92%
5 AM 26° Mostly Clear 10% 6 mph SW 92%
6 AM 26° Mostly Clear 5% 6 mph SW 92%
7 AM 26° Mostly Clear 5% 6 mph SW 90%
8 AM 27° Mostly Clear 5% 7 mph WSW 84%
9 AM 29° Mostly Clear 11% 8 mph WSW 77%
10 AM 30° Mostly Clear 13% 8 mph WSW 70%
11 AM 31° Mostly Clear 13% 7 mph WSW 66%
12 PM 32° Mostly Clear 13% 7 mph WSW 62%
1 PM 33° Mostly Clear 13% 7 mph WSW 59%
2 PM 33° Mostly Clear 17% 6 mph SW 58%
3 PM 33° Mostly Clear 17% 6 mph SW 57%
4 PM 33° Mostly Clear 15% 6 mph SW 56%
5 PM 33° Mostly Clear 16% 6 mph SSW 59%
15-Day Forecast
Today
8/12
Partly Cloudy
19%
25°
34°
Thu
8/13
Mostly Clear
16%
26°
34°
Fri
8/14
Partly Cloudy
6%
24°
36°
Sat
8/15
Clear
21%
24°
36°
Sun
8/16
Mostly Clear
25%
25°
38°
Mon
8/17
Partly Cloudy
25%
24°
38°
Tue
8/18
Mostly Cloudy
24%
24°
38°
Wed
8/19
Partly Cloudy
24%
24°
39°
Thu
8/20
Drizzle
50%
24°
39°
Fri
8/21
Drizzle
50%
24°
39°
Sat
8/22
Rain
68%
25°
39°
Sun
8/23
Drizzle
60%
24°
37°
Mon
8/24
Drizzle
60%
24°
37°
Tue
8/25
Drizzle
60%
24°
37°
Wed
8/26
Drizzle
60%
24°
36°
35
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
35 AQI 6.3 µg/m³
O3
Ground-level ozone
28 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 35 Good 28 35
Fri 49 Good 29 49
Sat 56 Moderate 35 56
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 Aug 12, 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
SBCAPE3323 J/kg
MLCAPE3595 J/kg
MUCAPE4372 J/kg
SBCIN-39 J/kg
MLCIN0 J/kg
Lifted Index-6.3
Kinematics
0–6 km Shear2 kt
0–1 km Shear5 kt
Eff. Shear8 kt
0–1 km SRH24
0–3 km SRH35
Eff. SRH35
Storm Motion25° @ 10 kt
0–1 km EHI0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.8
Thermo & Levels
PWAT2.19 in
0–3 km LR6.6 °C/km
700–500 LR5.5 °C/km
Total Totals47.4
LCL929 hPa
LFC853 hPa
EL143 hPa
Freezing Lvl16,834 ft