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: 4:20 PM CDT  ·  Refresh
33°C
Feels like 42°
Mostly Cloudy
▲ 34°  /  ▼ 24°
Wind
8 mph W
Humidity
68%
Dew Point
24°
Pressure
29.65 inHg
Visibility
10 mi
UV Index
5.5
Cloud Cover
73%
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 mostly cloudy at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2028 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°
44%
5 PM
33°
44%
6 PM
32°
43%
7 PM
31°
25%
8 PM
31°
28%
9 PM
28°
28%
10 PM
27°
28%
11 PM
27°
21%
12 AM
27°
22%
1 AM
26°
8%
2 AM
26°
14%
3 AM
26°
14%
4 AM
26°
15%
5 AM
24°
15%
6 AM
24°
15%
7 AM
24°
34%
8 AM
26°
39%
9 AM
28°
39%
10 AM
29°
39%
11 AM
30°
40%
12 PM
30°
40%
1 PM
31°
40%
2 PM
31°
40%
3 PM
32°
41%
7-Day Forecast
Today
34° 24°
Mostly Cloudy with a 44% chance of rain.
Thu
36° 24°
Mostly Cloudy with a 40% chance of rain.
Fri
34° 25°
Mostly Cloudy with a 48% chance of rain.
Sat
33° 24°
Partly Cloudy with a 52% chance of rain.
Sun
33° 22°
Drizzle, 60% chance.
Mon
34° 20°
Drizzle, 60% chance.
Tue
36° 22°
Clear with a 35% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 33° Mostly Cloudy 44% 8 mph W 68%
5 PM 33° Mostly Cloudy 44% 6 mph W 73%
6 PM 32° Mostly Cloudy 43% 5 mph W 74%
7 PM 31° Overcast 25% 4 mph W 74%
8 PM 31° Mostly Cloudy 28% 4 mph WSW 76%
9 PM 28° Mostly Cloudy 28% 4 mph WSW 76%
10 PM 27° Mostly Cloudy 28% 3 mph WSW 77%
11 PM 27° Mostly Cloudy 21% 3 mph WSW 78%
12 AM 27° Partly Cloudy 22% 4 mph WSW 80%
1 AM 26° Partly Cloudy 8% 4 mph WSW 82%
2 AM 26° Partly Cloudy 14% 4 mph WSW 85%
3 AM 26° Partly Cloudy 14% 4 mph W 87%
4 AM 26° Partly Cloudy 15% 4 mph W 89%
5 AM 24° Partly Cloudy 15% 4 mph W 90%
6 AM 24° Mostly Cloudy 15% 4 mph W 92%
7 AM 24° Overcast 34% 5 mph W 89%
8 AM 26° Mostly Cloudy 39% 6 mph W 81%
9 AM 28° Mostly Cloudy 39% 7 mph W 74%
10 AM 29° Partly Cloudy 39% 7 mph W 68%
11 AM 30° Mostly Cloudy 40% 7 mph W 69%
12 PM 30° Mostly Cloudy 40% 7 mph WNW 70%
1 PM 31° Mostly Cloudy 40% 7 mph WNW 70%
2 PM 31° Mostly Cloudy 40% 7 mph WNW 69%
3 PM 32° Overcast 41% 6 mph WNW 68%
15-Day Forecast
Today
7/29
Mostly Cloudy
44%
24°
34°
Thu
7/30
Mostly Cloudy
40%
24°
36°
Fri
7/31
Mostly Cloudy
48%
25°
34°
Sat
8/1
Partly Cloudy
52%
24°
33°
Sun
8/2
Drizzle
60%
22°
33°
Mon
8/3
Drizzle
60%
20°
34°
Tue
8/4
Clear
35%
22°
36°
Wed
8/5
Drizzle
60%
22°
36°
Thu
8/6
Drizzle
60%
23°
36°
Fri
8/7
Drizzle
60%
22°
36°
Sat
8/8
Drizzle
60%
22°
36°
Sun
8/9
Drizzle
60%
23°
36°
Mon
8/10
Drizzle
60%
23°
36°
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, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2441 J/kg
MLCAPE1473 J/kg
MUCAPE2441 J/kg
SBCIN-45 J/kg
MLCIN0 J/kg
Lifted Index-6.0
Kinematics
0–6 km Shear10 kt
0–1 km Shear4 kt
Eff. Shear9 kt
0–1 km SRH16
0–3 km SRH-17
Eff. SRH-17
Storm Motion321° @ 17 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.8
Thermo & Levels
PWAT2.10 in
0–3 km LR7.5 °C/km
700–500 LR5.3 °C/km
Total Totals46.1
LCL879 hPa
LFC843 hPa
EL135 hPa
Freezing Lvl16,585 ft