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, 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, Southern Hancock, MS 7:00 PM

St. James Parish, Louisiana, United States

Last updated: 9:48 AM CDT  ·  Refresh
29°C
Feels like 33°
Mostly Clear
▲ 36°  /  ▼ 24°
Wind
4 mph WNW
Humidity
80%
Dew Point
25°
Pressure
29.93 inHg
Visibility
10 mi
UV Index
7.0
Cloud Cover
25%
Sunrise
6:43 AM
Sunset
7:18 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. James Parish is currently mostly clear at 29°C. Precipitation is likely — peak probability 63% around 6 PM. Atmospheric instability is elevated (CAPE up to 3185 J/kg) — isolated convective development possible. Sunrise: 6:43AM · Sunset: 7:18PM.

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, 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, Southern Hancock, MS
Expires 7:00 PM
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
39%
10 AM
31°
50%
11 AM
32°
51%
12 PM
33°
51%
1 PM
34°
52%
2 PM
34°
57%
3 PM
34°
52%
4 PM
33°
55%
5 PM
32°
49%
6 PM
30°
63%
7 PM
29°
49%
8 PM
28°
49%
9 PM
27°
34%
10 PM
27°
19%
11 PM
27°
10%
12 AM
26°
11%
1 AM
26°
21%
2 AM
26°
24%
3 AM
26°
24%
4 AM
26°
27%
5 AM
24°
27%
6 AM
24°
28%
7 AM
25°
28%
8 AM
26°
37%
7-Day Forecast
Today
36° 24°
Partly Cloudy with a 63% chance of rain.
Tue
36° 24°
Overcast with a 85% chance of rain.
Wed
33° 23°
Heavy Rain, 90% chance.
Thu
33° 23°
Rain, 76% chance.
Fri
33° 23°
Rain, 76% chance.
Sat
34° 23°
Rain, 90% chance.
Sun
35° 23°
Rain, 90% chance.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Clear 39% 4 mph WNW 80%
10 AM 31° Mostly Clear 50% 4 mph WNW 72%
11 AM 32° Mostly Clear 51% 4 mph WNW 68%
12 PM 33° Mostly Clear 51% 2 mph WNW 64%
1 PM 34° Partly Cloudy 52% 2 mph NW 62%
2 PM 34° Partly Cloudy 57% 2 mph N 60%
3 PM 34° Partly Cloudy 52% 3 mph ESE 59%
4 PM 33° Partly Cloudy 55% 3 mph SE 64%
5 PM 32° Mostly Cloudy 49% 3 mph E 69%
6 PM 30° Mostly Cloudy 63% 3 mph ESE 77%
7 PM 29° Mostly Cloudy 49% 3 mph S 81%
8 PM 28° Mostly Cloudy 49% 2 mph SW 84%
9 PM 27° Mostly Cloudy 34% 3 mph SW 87%
10 PM 27° Partly Cloudy 19% 2 mph SW 89%
11 PM 27° Partly Cloudy 10% 3 mph ESE 91%
12 AM 26° Partly Cloudy 11% 4 mph ENE 92%
1 AM 26° Partly Cloudy 21% 4 mph ENE 94%
2 AM 26° Mostly Cloudy 24% 4 mph E 94%
3 AM 26° Mostly Cloudy 24% 2 mph E 96%
4 AM 26° Mostly Cloudy 27% 2 mph E 96%
5 AM 24° Overcast 27% 3 mph E 96%
6 AM 24° Fog 28% 3 mph E 96%
7 AM 25° Overcast 28% 3 mph E 92%
8 AM 26° Overcast 37% 4 mph E 89%
15-Day Forecast
Today
9/7
Partly Cloudy
63%
24°
36°
Tue
9/8
Overcast
85%
24°
36°
Wed
9/9
Heavy Rain
90%
23°
33°
Thu
9/10
Rain
76%
23°
33°
Fri
9/11
Rain
76%
23°
33°
Sat
9/12
Rain
90%
23°
34°
Sun
9/13
Rain
90%
23°
35°
Mon
9/14
Drizzle
42%
23°
35°
Tue
9/15
Rain
68%
23°
34°
Wed
9/16
Rain
68%
22°
34°
Thu
9/17
Drizzle
60%
22°
33°
Fri
9/18
Drizzle
60%
22°
34°
Sat
9/19
Drizzle
60%
22°
33°
Sun
9/20
Drizzle
60%
22°
33°
Mon
9/21
Drizzle
60%
21°
33°
51
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
51 AQI 9.2 µg/m³
O3
Ground-level ozone
33 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 51 Moderate 33 51
Wed 40 Good 38 40
Thu 32 Good 23 32
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 Mon Sep 7, 13:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3060 J/kg
MLCAPE1758 J/kg
MUCAPE3060 J/kg
SBCIN-42 J/kg
MLCIN-57 J/kg
Lifted Index-6.6
Kinematics
0–6 km Shear13 kt
0–1 km Shear3 kt
Eff. Shear24 kt
0–1 km SRH14
0–3 km SRH31
Eff. SRH31
Storm Motion109° @ 14 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell1.2
K-Index38.4
Thermo & Levels
PWAT2.30 in
0–3 km LR6.1 °C/km
700–500 LR5.6 °C/km
Total Totals47.4
LCL965 hPa
LFC873 hPa
EL140 hPa
Freezing Lvl16,040 ft