Dense Fog 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, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 10:00 AM

Saint Helena Parish, Louisiana, United States

Last updated: 10:52 PM CDT  ·  Refresh
23°C
Feels like 24°
Clear
▲ 33°  /  ▼ 15°
Wind
4 mph S
Humidity
77%
Dew Point
18°
Pressure
29.84 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
8%
Sunrise
7:03 AM
Sunset
6:33 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Saint Helena Parish is currently clear at 23°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:03AM · Sunset: 6:33PM.

Alerts

Dense Fog 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, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 10:00 AM
50 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
3%
11 PM
21°
3%
12 AM
20°
3%
1 AM
19°
4%
2 AM
19°
11%
3 AM
18°
13%
4 AM
17°
15%
5 AM
15°
15%
6 AM
15°
15%
7 AM
17°
15%
8 AM
18°
6%
9 AM
24°
7%
10 AM
26°
7%
11 AM
28°
7%
12 PM
29°
7%
1 PM
32°
7%
2 PM
33°
7%
3 PM
33°
7%
4 PM
32°
7%
5 PM
28°
3%
6 PM
27°
3%
7 PM
26°
3%
8 PM
24°
3%
9 PM
22°
3%
7-Day Forecast
Tonight
33° 15°
Clear.
Wed
33° 15°
Fog.
Thu
34° 14°
Mostly Clear.
Fri
34° 14°
Partly Cloudy.
Sat
27° 9°
Mostly Cloudy.
Sun
29° 8°
Clear with a 30% chance of rain.
Mon
29° 16°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 23° Clear 3% 4 mph S 77%
11 PM 21° Clear 3% 4 mph S 79%
12 AM 20° Clear 3% 4 mph S 84%
1 AM 19° Mostly Clear 4% 3 mph SW 87%
2 AM 19° Mostly Clear 11% 3 mph SSW 90%
3 AM 18° Mostly Clear 13% 3 mph SSW 92%
4 AM 17° Partly Cloudy 15% 2 mph SSW 94%
5 AM 15° Haze 15% 2 mph SSE 95%
6 AM 15° Fog 15% 1 mph SSE 96%
7 AM 17° Fog 15% 1 mph SSE 90%
8 AM 18° Mostly Cloudy 6% 0 mph SE 82%
9 AM 24° Partly Cloudy 7% 1 mph S 71%
10 AM 26° Partly Cloudy 7% 2 mph SSE 63%
11 AM 28° Mostly Clear 7% 2 mph SSE 55%
12 PM 29° Mostly Clear 7% 3 mph SSE 48%
1 PM 32° Mostly Clear 7% 4 mph SSE 42%
2 PM 33° Clear 7% 4 mph SSE 36%
3 PM 33° Clear 7% 5 mph SSE 32%
4 PM 32° Clear 7% 5 mph SSE 36%
5 PM 28° Clear 3% 4 mph SSE 43%
6 PM 27° Clear 3% 4 mph S 49%
7 PM 26° Clear 3% 4 mph SSE 54%
8 PM 24° Clear 3% 4 mph SSE 58%
9 PM 22° Clear 3% 4 mph SE 63%
15-Day Forecast
Today
10/13
Clear
3%
15°
33°
Wed
10/14
Fog
15%
15°
33°
Thu
10/15
Mostly Clear
7%
14°
34°
Fri
10/16
Partly Cloudy
16%
14°
34°
Sat
10/17
Mostly Cloudy
3%
9°
27°
Sun
10/18
Clear
30%
8°
29°
Mon
10/19
Clear
17%
16°
29°
Tue
10/20
Clear
31%
18°
32°
Wed
10/21
Drizzle
43%
15°
32°
Thu
10/22
Drizzle
44%
15°
33°
Fri
10/23
Drizzle
51%
16°
33°
Sat
10/24
Drizzle
60%
17°
32°
Sun
10/25
Clear
60%
16°
31°
Mon
10/26
Drizzle
60%
14°
30°
Tue
10/27
Drizzle
60%
14°
29°
50
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
48 AQI 8.7 µg/m³
O3
Ground-level ozone
Dominant
50 AQI 54 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 50 Good 50 48
Thu 48 Good 47 48
Fri 52 Moderate 47 52
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Tue Oct 13, 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
SBCAPE0 J/kg
MLCAPE9 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index4.9
Kinematics
0–6 km Shear17 kt
0–1 km Shear5 kt
Eff. Shear—
0–1 km SRH14
0–3 km SRH38
Eff. SRH—
Storm Motion83° @ 16 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index2.0
Thermo & Levels
PWAT1.17 in
0–3 km LR3.3 °C/km
700–500 LR6.5 °C/km
Total Totals33.5
LCL938 hPa
LFC—
EL—
Freezing Lvl16,713 ft