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, Northern Tangipahoa, LA, Lower Plaquemines, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS 8:00 PM 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, Northern Tangipahoa, LA, Lower Plaquemines, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS 8:00 PM

Saint Helena Parish, Louisiana, United States

Last updated: 7:46 PM CDT  ·  Refresh
32°C
Feels like 36°
Mostly Clear
▲ 35°  /  ▼ 23°
Wind
4 mph W
Humidity
57%
Dew Point
22°
Pressure
29.74 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
11%
Sunrise
6:16 AM
Sunset
8:01 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Saint Helena Parish is currently mostly clear at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1795 J/kg) — isolated convective development possible. Sunrise: 6:16AM · Sunset: 8:01PM.

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, Northern Tangipahoa, LA, Lower Plaquemines, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS
Expires 8:00 PM
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, Northern Tangipahoa, LA, Lower Plaquemines, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS
Expires 8:00 PM
37 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
11%
8 PM
31°
29%
9 PM
29°
21%
10 PM
28°
14%
11 PM
28°
14%
12 AM
27°
7%
1 AM
26°
4%
2 AM
26°
4%
3 AM
25°
4%
4 AM
25°
8%
5 AM
23°
8%
6 AM
23°
8%
7 AM
25°
8%
8 AM
27°
8%
9 AM
30°
14%
10 AM
31°
10%
11 AM
32°
13%
12 PM
33°
15%
1 PM
34°
18%
2 PM
36°
11%
3 PM
36°
11%
4 PM
35°
5%
5 PM
33°
5%
6 PM
33°
5%
7-Day Forecast
Tonight
35° 23°
Mostly Clear.
Mon
36° 23°
Partly Cloudy.
Tue
36° 24°
Clear.
Wed
37° 24°
Partly Cloudy with a 73% chance of rain.
Thu
36° 23°
Rain, 64% chance.
Fri
36° 23°
Rain, 70% chance.
Sat
35° 23°
Heavy Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 32° Mostly Clear 11% 4 mph W 57%
8 PM 31° Mostly Clear 29% 3 mph W 62%
9 PM 29° Partly Cloudy 21% 4 mph WSW 67%
10 PM 28° Mostly Cloudy 14% 4 mph WSW 72%
11 PM 28° Partly Cloudy 14% 5 mph WSW 77%
12 AM 27° Mostly Clear 7% 5 mph WSW 81%
1 AM 26° Clear 4% 5 mph WSW 83%
2 AM 26° Clear 4% 5 mph WSW 86%
3 AM 25° Clear 4% 5 mph W 89%
4 AM 25° Clear 8% 4 mph W 90%
5 AM 23° Clear 8% 4 mph W 91%
6 AM 23° Mostly Clear 8% 4 mph W 91%
7 AM 25° Mostly Clear 8% 6 mph W 84%
8 AM 27° Partly Cloudy 8% 6 mph W 75%
9 AM 30° Partly Cloudy 14% 6 mph W 67%
10 AM 31° Partly Cloudy 10% 6 mph W 62%
11 AM 32° Partly Cloudy 13% 6 mph W 57%
12 PM 33° Mostly Clear 15% 6 mph W 53%
1 PM 34° Mostly Clear 18% 6 mph W 52%
2 PM 36° Partly Cloudy 11% 6 mph W 52%
3 PM 36° Partly Cloudy 11% 6 mph W 51%
4 PM 35° Partly Cloudy 5% 5 mph W 53%
5 PM 33° Partly Cloudy 5% 5 mph W 56%
6 PM 33° Partly Cloudy 5% 5 mph W 59%
15-Day Forecast
Today
7/26
Mostly Clear
14%
23°
35°
Mon
7/27
Partly Cloudy
18%
23°
36°
Tue
7/28
Clear
3%
24°
36°
Wed
7/29
Partly Cloudy
73%
24°
37°
Thu
7/30
Rain
64%
23°
36°
Fri
7/31
Rain
70%
23°
36°
Sat
8/1
Heavy Rain
82%
23°
35°
Sun
8/2
Heavy Rain
82%
23°
32°
Mon
8/3
Rain
69%
22°
35°
Tue
8/4
Drizzle
51%
23°
36°
Wed
8/5
Drizzle
60%
23°
37°
Thu
8/6
Drizzle
60%
23°
36°
Fri
8/7
Drizzle
60%
23°
36°
Sat
8/8
Drizzle
60%
23°
36°
Sun
8/9
Drizzle
60%
23°
35°
37
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
37 AQI 6.7 µg/m³
O3
Ground-level ozone
24 AQI 26 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 37 Good 24 37
Tue 34 Good 26 34
Wed 45 Good 24 45
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 Jul 26, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1202 J/kg
MLCAPE617 J/kg
MUCAPE1202 J/kg
SBCIN-93 J/kg
MLCIN0 J/kg
Lifted Index-1.6
Kinematics
0–6 km Shear12 kt
0–1 km Shear3 kt
Eff. Shear19 kt
0–1 km SRH13
0–3 km SRH-0
Eff. SRH-0
Storm Motion309° @ 20 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index5.7
Thermo & Levels
PWAT1.47 in
0–3 km LR6.4 °C/km
700–500 LR5.4 °C/km
Total Totals37.6
LCL874 hPa
LFC815 hPa
EL168 hPa
Freezing Lvl17,749 ft