Excessive Heat Watch 8:00 PM Extreme 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

Saint Helena Parish, Louisiana, United States

Last updated: 10:05 PM CDT  ·  Refresh
31°C
Feels like 34°
Clear
▲ 36°  /  ▼ 24°
Wind
4 mph SSW
Humidity
60%
Dew Point
22°
Pressure
29.88 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
4%
Sunrise
6:29 AM
Sunset
7:44 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Saint Helena Parish is currently clear at 30°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2052 J/kg) — isolated convective development possible. Sunrise: 6:29AM · Sunset: 7:44PM.

49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
3%
11 PM
30°
14%
12 AM
29°
14%
1 AM
27°
3%
2 AM
27°
3%
3 AM
26°
3%
4 AM
26°
3%
5 AM
24°
3%
6 AM
24°
3%
7 AM
24°
3%
8 AM
26°
10%
9 AM
29°
10%
10 AM
32°
22%
11 AM
33°
22%
12 PM
35°
23%
1 PM
38°
23%
2 PM
38°
23%
3 PM
38°
30%
4 PM
38°
34%
5 PM
36°
34%
6 PM
35°
34%
7 PM
34°
34%
8 PM
33°
34%
9 PM
30°
34%
7-Day Forecast
Tonight
36° 24°
Clear.
Sun
38° 24°
Mostly Clear with a 34% chance of rain.
Mon
41° 24°
Mostly Clear with a 55% chance of rain.
Tue
39° 23°
Mostly Clear with a 57% chance of rain.
Wed
40° 23°
Rain, 44% chance.
Thu
41° 22°
Rain, 61% chance.
Fri
41° 23°
Drizzle, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 31° Clear 3% 4 mph SSW 60%
11 PM 30° Clear 14% 5 mph SSW 67%
12 AM 29° Clear 14% 5 mph SW 75%
1 AM 27° Clear 3% 5 mph WSW 83%
2 AM 27° Clear 3% 5 mph WSW 86%
3 AM 26° Clear 3% 4 mph WSW 90%
4 AM 26° Clear 3% 4 mph WSW 92%
5 AM 24° Clear 3% 3 mph W 92%
6 AM 24° Clear 3% 3 mph W 92%
7 AM 24° Clear 3% 3 mph WNW 91%
8 AM 26° Clear 10% 6 mph WNW 79%
9 AM 29° Clear 10% 6 mph WNW 68%
10 AM 32° Clear 22% 6 mph NW 60%
11 AM 33° Clear 22% 4 mph NW 54%
12 PM 35° Mostly Clear 23% 3 mph NW 48%
1 PM 38° Mostly Clear 23% 2 mph NW 42%
2 PM 38° Partly Cloudy 23% 2 mph W 41%
3 PM 38° Partly Cloudy 30% 3 mph WSW 40%
4 PM 38° Partly Cloudy 34% 4 mph SW 40%
5 PM 36° Partly Cloudy 34% 4 mph SW 46%
6 PM 35° Partly Cloudy 34% 4 mph SW 52%
7 PM 34° Partly Cloudy 34% 4 mph SW 58%
8 PM 33° Partly Cloudy 34% 4 mph WSW 62%
9 PM 30° Partly Cloudy 34% 4 mph WSW 66%
15-Day Forecast
Today
8/15
Clear
3%
24°
36°
Sun
8/16
Mostly Clear
34%
24°
38°
Mon
8/17
Mostly Clear
55%
24°
41°
Tue
8/18
Mostly Clear
57%
23°
39°
Wed
8/19
Rain
44%
23°
40°
Thu
8/20
Rain
61%
22°
41°
Fri
8/21
Drizzle
52%
23°
41°
Sat
8/22
Rain
63%
22°
38°
Sun
8/23
Rain
68%
21°
38°
Mon
8/24
Drizzle
44%
21°
39°
Tue
8/25
Drizzle
36%
21°
39°
Wed
8/26
Drizzle
60%
23°
39°
Thu
8/27
Drizzle
60%
23°
38°
Fri
8/28
Drizzle
60%
23°
38°
Sat
8/29
Drizzle
60%
23°
38°
49
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
49 AQI 8.9 µg/m³
O3
Ground-level ozone
25 AQI 28 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 49 Good 25 49
Mon 50 Good 28 50
Tue 53 Moderate 31 53
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
SBCAPE978 J/kg
MLCAPE1173 J/kg
MUCAPE1331 J/kg
SBCIN-236 J/kg
MLCIN-94 J/kg
Lifted Index-3.4
Kinematics
0–6 km Shear17 kt
0–1 km Shear1 kt
Eff. Shear16 kt
0–1 km SRH7
0–3 km SRH36
Eff. SRH36
Storm Motion89° @ 16 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index21.1
Thermo & Levels
PWAT1.61 in
0–3 km LR5.8 °C/km
700–500 LR6.4 °C/km
Total Totals48.2
LCL892 hPa
LFC683 hPa
EL198 hPa
Freezing Lvl16,893 ft