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 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 Excessive Heat Watch 8:00 PM

St. James Parish, Louisiana, United States

Last updated: 3:42 PM CDT  ·  Refresh
34°C
Feels like 39°
Clear
▲ 35°  /  ▼ 24°
Wind
4 mph SSE
Humidity
50%
Dew Point
24°
Pressure
30.09 inHg
Visibility
9 mi
UV Index
8.3
Cloud Cover
1%
Sunrise
6:30 AM
Sunset
7:45 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. James Parish is currently clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3611 J/kg) — isolated convective development possible. Sunrise: 6:30AM · Sunset: 7:45PM.

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, 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
Expires 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
Expires 8:00 PM
Excessive Heat Watch
Expires 8:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
5%
4 PM
34°
3%
5 PM
35°
3%
6 PM
33°
3%
7 PM
32°
3%
8 PM
31°
3%
9 PM
29°
3%
10 PM
28°
3%
11 PM
28°
3%
12 AM
27°
3%
1 AM
27°
3%
2 AM
26°
7%
3 AM
26°
6%
4 AM
26°
7%
5 AM
24°
17%
6 AM
24°
17%
7 AM
24°
17%
8 AM
26°
3%
9 AM
28°
3%
10 AM
30°
3%
11 AM
31°
3%
12 PM
32°
3%
1 PM
32°
3%
2 PM
32°
3%
7-Day Forecast
Today
35° 24°
Clear.
Sat
36° 24°
Fog.
Sun
37° 24°
Partly Cloudy.
Mon
37° 24°
Clear with a 43% chance of rain.
Tue
38° 24°
Clear.
Wed
37° 23°
Drizzle, 50% chance.
Thu
38° 23°
Drizzle, 43% chance.
TimeTempConditionsPrecipWindHumidity
Now 34° Clear 5% 4 mph SSE 50%
4 PM 34° Clear 3% 5 mph SSE 54%
5 PM 35° Clear 3% 5 mph S 60%
6 PM 33° Clear 3% 6 mph SSW 69%
7 PM 32° Clear 3% 6 mph SW 76%
8 PM 31° Clear 3% 6 mph SW 81%
9 PM 29° Clear 3% 6 mph SW 86%
10 PM 28° Clear 3% 5 mph SW 89%
11 PM 28° Clear 3% 5 mph SW 91%
12 AM 27° Clear 3% 5 mph SW 93%
1 AM 27° Clear 3% 4 mph SW 94%
2 AM 26° Mostly Clear 7% 3 mph SW 95%
3 AM 26° Mostly Clear 6% 2 mph SW 96%
4 AM 26° Haze 7% 2 mph WSW 96%
5 AM 24° Haze 17% 2 mph NNW 96%
6 AM 24° Fog 17% 2 mph N 96%
7 AM 24° Partly Cloudy 17% 2 mph NNW 93%
8 AM 26° Partly Cloudy 3% 3 mph NW 88%
9 AM 28° Partly Cloudy 3% 4 mph WNW 82%
10 AM 30° Mostly Clear 3% 4 mph WNW 76%
11 AM 31° Mostly Clear 3% 3 mph NW 70%
12 PM 32° Clear 3% 3 mph NNW 65%
1 PM 32° Clear 3% 2 mph NNW 62%
2 PM 32° Mostly Clear 3% 2 mph NE 61%
15-Day Forecast
Today
8/14
Clear
5%
24°
35°
Sat
8/15
Fog
17%
24°
36°
Sun
8/16
Partly Cloudy
18%
24°
37°
Mon
8/17
Clear
43%
24°
37°
Tue
8/18
Clear
9%
24°
38°
Wed
8/19
Drizzle
50%
23°
37°
Thu
8/20
Drizzle
43%
23°
38°
Fri
8/21
Clear
60%
23°
39°
Sat
8/22
Drizzle
60%
23°
38°
Sun
8/23
Drizzle
60%
22°
38°
Mon
8/24
Drizzle
60%
23°
37°
Tue
8/25
Drizzle
60%
24°
37°
Wed
8/26
Drizzle
60%
24°
37°
Thu
8/27
Drizzle
60%
24°
38°
Fri
8/28
Drizzle
60%
24°
37°
55
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
55 AQI 11.1 µg/m³
O3
Ground-level ozone
20 AQI 23 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 55 Moderate 20 55
Sun 53 Moderate 39 53
Mon 54 Moderate 39 54
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 Fri Aug 14, 19:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3181 J/kg
MLCAPE1577 J/kg
MUCAPE3181 J/kg
SBCIN-11 J/kg
MLCIN-75 J/kg
Lifted Index-6.6
Kinematics
0–6 km Shear3 kt
0–1 km Shear4 kt
Eff. Shear4 kt
0–1 km SRH-8
0–3 km SRH-11
Eff. SRH-11
Storm Motion216° @ 19 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index19.9
Thermo & Levels
PWAT1.48 in
0–3 km LR7.3 °C/km
700–500 LR6.0 °C/km
Total Totals41.2
LCL878 hPa
LFC819 hPa
EL139 hPa
Freezing Lvl16,759 ft