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

St. James Parish, Louisiana, United States

Last updated: 6:57 PM CDT  ·  Refresh
32°C
Feels like 38°
Partly Cloudy
▲ 36°  /  ▼ 24°
Wind
6 mph SW
Humidity
64%
Dew Point
24°
Pressure
29.93 inHg
Visibility
9 mi
UV Index
2.3
Cloud Cover
31%
Sunrise
6:33 AM
Sunset
7:39 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. James Parish is currently partly cloudy at 32°C. Precipitation is likely — peak probability 62% around 5 PM. Atmospheric instability is elevated (CAPE up to 3763 J/kg) — isolated convective development possible. Sunrise: 6:33AM · Sunset: 7:39PM.

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
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
15%
7 PM
31°
31%
8 PM
30°
33%
9 PM
29°
25%
10 PM
28°
25%
11 PM
28°
25%
12 AM
27°
13%
1 AM
27°
9%
2 AM
27°
9%
3 AM
26°
9%
4 AM
26°
9%
5 AM
24°
8%
6 AM
24°
8%
7 AM
26°
21%
8 AM
28°
23%
9 AM
29°
20%
10 AM
30°
31%
11 AM
31°
41%
12 PM
32°
41%
1 PM
36°
45%
2 PM
36°
45%
3 PM
35°
46%
4 PM
34°
55%
5 PM
32°
61%
7-Day Forecast
Tonight
36° 24°
Partly Cloudy with a 25% chance of rain.
Fri
38° 24°
Partly Cloudy with a 61% chance of rain.
Sat
38° 24°
Partly Cloudy.
Sun
40° 25°
Mostly Clear with a 67% chance of rain.
Mon
38° 24°
Drizzle, 52% chance.
Tue
38° 24°
Rain, 72% chance.
Wed
38° 24°
Rain, 62% chance.
TimeTempConditionsPrecipWindHumidity
Now 32° Partly Cloudy 15% 6 mph SW 64%
7 PM 31° Partly Cloudy 31% 6 mph SW 71%
8 PM 30° Partly Cloudy 33% 6 mph SW 77%
9 PM 29° Mostly Clear 25% 6 mph SW 82%
10 PM 28° Partly Cloudy 25% 5 mph SW 85%
11 PM 28° Mostly Clear 25% 4 mph WSW 88%
12 AM 27° Partly Cloudy 13% 4 mph W 91%
1 AM 27° Mostly Clear 9% 4 mph W 91%
2 AM 27° Clear 9% 3 mph W 91%
3 AM 26° Partly Cloudy 9% 3 mph W 90%
4 AM 26° Mostly Clear 9% 2 mph W 92%
5 AM 24° Mostly Clear 8% 3 mph WSW 92%
6 AM 24° Fog 8% 4 mph WSW 93%
7 AM 26° Mostly Clear 21% 4 mph W 88%
8 AM 28° Mostly Clear 23% 6 mph W 82%
9 AM 29° Mostly Clear 20% 7 mph WNW 76%
10 AM 30° Mostly Clear 31% 7 mph W 68%
11 AM 31° Partly Cloudy 41% 6 mph W 61%
12 PM 32° Partly Cloudy 41% 6 mph W 53%
1 PM 36° Partly Cloudy 45% 6 mph W 52%
2 PM 36° Partly Cloudy 45% 5 mph W 52%
3 PM 35° Partly Cloudy 46% 5 mph WSW 52%
4 PM 34° Partly Cloudy 55% 6 mph WSW 58%
5 PM 32° Mostly Cloudy 61% 6 mph WSW 64%
15-Day Forecast
Today
8/20
Partly Cloudy
25%
24°
36°
Fri
8/21
Partly Cloudy
61%
24°
38°
Sat
8/22
Partly Cloudy
18%
24°
38°
Sun
8/23
Mostly Clear
67%
25°
40°
Mon
8/24
Drizzle
52%
24°
38°
Tue
8/25
Rain
72%
24°
38°
Wed
8/26
Rain
62%
24°
38°
Thu
8/27
Rain
74%
24°
37°
Fri
8/28
Rain
73%
24°
38°
Sat
8/29
Rain
66%
24°
39°
Sun
8/30
Overcast
39%
24°
37°
Mon
8/31
Drizzle
60%
24°
38°
Tue
9/1
Drizzle
60%
24°
38°
Wed
9/2
Drizzle
60%
24°
38°
Thu
9/3
Drizzle
60%
24°
38°
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 9.6 µg/m³
O3
Ground-level ozone
24 AQI 27 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Fri 52 Moderate 24 52
Sat 48 Good 35 48
Sun 41 Good 35 41
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 Thu Aug 20, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2984 J/kg
MLCAPE1680 J/kg
MUCAPE2984 J/kg
SBCIN-77 J/kg
MLCIN-44 J/kg
Lifted Index-5.6
Kinematics
0–6 km Shear15 kt
0–1 km Shear4 kt
Eff. Shear16 kt
0–1 km SRH21
0–3 km SRH35
Eff. SRH35
Storm Motion63° @ 14 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index28.5
Thermo & Levels
PWAT1.79 in
0–3 km LR6.5 °C/km
700–500 LR6.0 °C/km
Total Totals44.2
LCL904 hPa
LFC851 hPa
EL147 hPa
Freezing Lvl16,434 ft