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, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, 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, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, 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 7:00 PM

Saint Helena Parish, Louisiana, United States

Last updated: 2:12 PM CDT  ·  Refresh
33°C
Feels like 40°
Partly Cloudy
▲ 35°  /  ▼ 23°
Wind
6 mph W
Humidity
58%
Dew Point
24°
Pressure
29.68 inHg
Visibility
10 mi
UV Index
8.7
Cloud Cover
49%
Sunrise
6:18 AM
Sunset
7:59 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Saint Helena Parish is currently partly cloudy at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1929 J/kg) — isolated convective development possible. Sunrise: 6:18AM · Sunset: 7:59PM.

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, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, 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, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, 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 7:00 PM
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
29%
3 PM
33°
27%
4 PM
33°
26%
5 PM
33°
26%
6 PM
33°
22%
7 PM
32°
5%
8 PM
31°
8%
9 PM
28°
8%
10 PM
27°
8%
11 PM
27°
8%
12 AM
27°
8%
1 AM
27°
9%
2 AM
26°
9%
3 AM
26°
15%
4 AM
26°
15%
5 AM
23°
15%
6 AM
23°
16%
7 AM
24°
35%
8 AM
26°
39%
9 AM
28°
40%
10 AM
29°
40%
11 AM
29°
40%
12 PM
29°
40%
1 PM
32°
46%
7-Day Forecast
Today
35° 23°
Partly Cloudy with a 29% chance of rain.
Thu
36° 23°
Mostly Cloudy with a 47% chance of rain.
Fri
34° 25°
Partly Cloudy with a 52% chance of rain.
Sat
34° 24°
Mostly Cloudy with a 81% chance of rain.
Sun
32° 22°
Drizzle, 68% chance.
Mon
34° 20°
Drizzle, 60% chance.
Tue
35° 22°
Clear with a 35% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 33° Partly Cloudy 29% 6 mph W 58%
3 PM 33° Overcast 27% 6 mph WSW 66%
4 PM 33° Mostly Cloudy 26% 8 mph WSW 70%
5 PM 33° Mostly Cloudy 26% 6 mph W 69%
6 PM 33° Mostly Cloudy 22% 5 mph W 70%
7 PM 32° Mostly Cloudy 5% 5 mph W 71%
8 PM 31° Mostly Cloudy 8% 4 mph W 72%
9 PM 28° Mostly Cloudy 8% 4 mph WSW 74%
10 PM 27° Mostly Cloudy 8% 3 mph WSW 76%
11 PM 27° Mostly Cloudy 8% 3 mph WSW 77%
12 AM 27° Overcast 8% 4 mph WSW 79%
1 AM 27° Overcast 9% 4 mph WSW 80%
2 AM 26° Mostly Cloudy 9% 4 mph WSW 84%
3 AM 26° Mostly Cloudy 15% 4 mph WSW 88%
4 AM 26° Mostly Cloudy 15% 4 mph W 90%
5 AM 23° Mostly Cloudy 15% 4 mph W 91%
6 AM 23° Mostly Cloudy 16% 4 mph W 92%
7 AM 24° Mostly Cloudy 35% 4 mph W 91%
8 AM 26° Mostly Cloudy 39% 5 mph W 83%
9 AM 28° Mostly Cloudy 40% 6 mph W 75%
10 AM 29° Mostly Cloudy 40% 6 mph W 69%
11 AM 29° Mostly Cloudy 40% 6 mph WNW 70%
12 PM 29° Mostly Cloudy 40% 6 mph WNW 72%
1 PM 32° Partly Cloudy 46% 6 mph WNW 72%
15-Day Forecast
Today
7/29
Partly Cloudy
29%
23°
35°
Thu
7/30
Mostly Cloudy
47%
23°
36°
Fri
7/31
Partly Cloudy
52%
25°
34°
Sat
8/1
Mostly Cloudy
81%
24°
34°
Sun
8/2
Drizzle
68%
22°
32°
Mon
8/3
Drizzle
60%
20°
34°
Tue
8/4
Clear
35%
22°
35°
Wed
8/5
Drizzle
60%
22°
36°
Thu
8/6
Drizzle
60%
23°
36°
Fri
8/7
Drizzle
60%
22°
35°
Sat
8/8
Drizzle
60%
22°
35°
Sun
8/9
Drizzle
60%
23°
36°
Mon
8/10
Drizzle
60%
23°
35°
Tue
8/11
Drizzle
60%
23°
36°
Wed
8/12
Drizzle
60%
23°
36°
52
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
52 AQI 9.7 µg/m³
O3
Ground-level ozone
28 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 52 Moderate 28 52
Fri 58 Moderate 31 58
Sat 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 Wed Jul 29, 17:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2379 J/kg
MLCAPE1723 J/kg
MUCAPE2379 J/kg
SBCIN0 J/kg
MLCIN-1 J/kg
Lifted Index-4.8
Kinematics
0–6 km Shear12 kt
0–1 km Shear3 kt
Eff. Shear12 kt
0–1 km SRH9
0–3 km SRH-5
Eff. SRH-5
Storm Motion311° @ 16 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index30.8
Thermo & Levels
PWAT1.98 in
0–3 km LR7.8 °C/km
700–500 LR4.7 °C/km
Total Totals42.9
LCL870 hPa
LFC1005 hPa
EL132 hPa
Freezing Lvl16,985 ft