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, 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

Saint Helena Parish, Louisiana, United States

Last updated: 5:21 PM CDT  ·  Refresh
34°C
Feels like 40°
Mostly Clear
▲ 35°  /  ▼ 24°
Wind
6 mph WSW
Humidity
53%
Dew Point
23°
Pressure
29.72 inHg
Visibility
10 mi
UV Index
6.0
Cloud Cover
14%
Sunrise
6:27 AM
Sunset
7:47 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Saint Helena Parish is currently mostly clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2912 J/kg) — isolated convective development possible. Sunrise: 6:27AM · Sunset: 7:47PM.

34 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
6%
6 PM
34°
11%
7 PM
33°
11%
8 PM
32°
11%
9 PM
30°
11%
10 PM
29°
9%
11 PM
28°
4%
12 AM
28°
3%
1 AM
27°
3%
2 AM
26°
3%
3 AM
26°
3%
4 AM
26°
8%
5 AM
24°
8%
6 AM
24°
8%
7 AM
25°
8%
8 AM
27°
8%
9 AM
29°
10%
10 AM
30°
10%
11 AM
31°
5%
12 PM
34°
5%
1 PM
35°
5%
2 PM
35°
8%
3 PM
35°
8%
4 PM
35°
8%
7-Day Forecast
Today
35° 24°
Mostly Clear.
Thu
37° 24°
Partly Cloudy.
Fri
38° 23°
Clear.
Sat
38° 22°
Clear.
Sun
40° 23°
Partly Cloudy with a 25% chance of rain.
Mon
40° 23°
Partly Cloudy with a 28% chance of rain.
Tue
41° 23°
Partly Cloudy with a 24% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Clear 6% 6 mph WSW 53%
6 PM 34° Clear 11% 6 mph SW 55%
7 PM 33° Clear 11% 7 mph SSW 60%
8 PM 32° Clear 11% 6 mph SSW 68%
9 PM 30° Clear 11% 6 mph SSW 74%
10 PM 29° Mostly Clear 9% 5 mph SSW 78%
11 PM 28° Mostly Clear 4% 5 mph SSW 81%
12 AM 28° Mostly Clear 3% 5 mph SW 84%
1 AM 27° Partly Cloudy 3% 5 mph SW 87%
2 AM 26° Mostly Clear 3% 5 mph SW 90%
3 AM 26° Mostly Clear 3% 4 mph SW 92%
4 AM 26° Mostly Clear 8% 4 mph SW 94%
5 AM 24° Partly Cloudy 8% 4 mph SW 93%
6 AM 24° Partly Cloudy 8% 3 mph SW 93%
7 AM 25° Partly Cloudy 8% 4 mph SW 91%
8 AM 27° Partly Cloudy 8% 6 mph WSW 84%
9 AM 29° Partly Cloudy 10% 6 mph WSW 76%
10 AM 30° Partly Cloudy 10% 7 mph WSW 68%
11 AM 31° Partly Cloudy 5% 7 mph WSW 62%
12 PM 34° Partly Cloudy 5% 7 mph WSW 55%
1 PM 35° Partly Cloudy 5% 7 mph WSW 52%
2 PM 35° Partly Cloudy 8% 6 mph SW 50%
3 PM 35° Mostly Clear 8% 6 mph SW 49%
4 PM 35° Mostly Clear 8% 6 mph SW 50%
15-Day Forecast
Today
8/12
Mostly Clear
11%
24°
35°
Thu
8/13
Partly Cloudy
9%
24°
37°
Fri
8/14
Clear
3%
23°
38°
Sat
8/15
Clear
17%
22°
38°
Sun
8/16
Partly Cloudy
25%
23°
40°
Mon
8/17
Partly Cloudy
28%
23°
40°
Tue
8/18
Partly Cloudy
24%
23°
41°
Wed
8/19
Clear
60%
23°
41°
Thu
8/20
Drizzle
50%
23°
41°
Fri
8/21
Drizzle
54%
23°
41°
Sat
8/22
Drizzle
60%
24°
40°
Sun
8/23
Drizzle
60%
23°
39°
Mon
8/24
Drizzle
60%
23°
38°
Tue
8/25
Drizzle
60%
23°
38°
Wed
8/26
Drizzle
60%
23°
38°
34
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
34 AQI 6.1 µg/m³
O3
Ground-level ozone
31 AQI 33 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 34 Good 31 34
Fri 40 Good 28 40
Sat 58 Moderate 31 58
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
SBCAPE3010 J/kg
MLCAPE2964 J/kg
MUCAPE3039 J/kg
SBCIN-24 J/kg
MLCIN-1 J/kg
Lifted Index-5.6
Kinematics
0–6 km Shear4 kt
0–1 km Shear1 kt
Eff. Shear4 kt
0–1 km SRH6
0–3 km SRH3
Eff. SRH3
Storm Motion329° @ 14 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.8
Thermo & Levels
PWAT1.93 in
0–3 km LR7.9 °C/km
700–500 LR5.3 °C/km
Total Totals47.2
LCL853 hPa
LFC821 hPa
EL147 hPa
Freezing Lvl16,788 ft