Excessive Heat Watch 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: 10:54 PM CDT  ·  Refresh
28°C
Feels like 32°
Mostly Clear
▲ 36°  /  ▼ 24°
Wind
3 mph SW
Humidity
84%
Dew Point
25°
Pressure
30.06 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
13%
Sunrise
6:31 AM
Sunset
7:43 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. James Parish is currently mostly clear at 28°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2461 J/kg) — isolated convective development possible. Sunrise: 6:31AM · Sunset: 7:43PM.

Alerts

Excessive Heat Watch
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
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
8%
11 PM
28°
19%
12 AM
28°
9%
1 AM
27°
4%
2 AM
27°
4%
3 AM
27°
4%
4 AM
27°
4%
5 AM
25°
4%
6 AM
24°
4%
7 AM
27°
17%
8 AM
28°
21%
9 AM
29°
21%
10 AM
31°
31%
11 AM
32°
31%
12 PM
33°
39%
1 PM
36°
35%
2 PM
36°
36%
3 PM
36°
36%
4 PM
35°
37%
5 PM
34°
37%
6 PM
33°
19%
7 PM
32°
19%
8 PM
31°
19%
9 PM
29°
20%
7-Day Forecast
Tonight
36° 24°
Mostly Clear.
Mon
37° 24°
Partly Cloudy with a 37% chance of rain.
Tue
39° 26°
Partly Cloudy with a 35% chance of rain.
Wed
38° 24°
Partly Cloudy with a 57% chance of rain.
Thu
39° 24°
Overcast with a 30% chance of rain.
Fri
39° 24°
Rain, 64% chance.
Sat
38° 23°
Rain, 64% chance.
TimeTempConditionsPrecipWindHumidity
Now 28° Mostly Clear 8% 3 mph SW 84%
11 PM 28° Mostly Clear 19% 4 mph SW 86%
12 AM 28° Clear 9% 5 mph SW 87%
1 AM 27° Clear 4% 5 mph SW 88%
2 AM 27° Clear 4% 5 mph SW 88%
3 AM 27° Clear 4% 5 mph WSW 88%
4 AM 27° Clear 4% 3 mph WSW 89%
5 AM 25° Clear 4% 3 mph WNW 90%
6 AM 24° Clear 4% 3 mph WNW 90%
7 AM 27° Clear 17% 4 mph WNW 84%
8 AM 28° Mostly Clear 21% 5 mph WNW 75%
9 AM 29° Partly Cloudy 21% 5 mph WNW 66%
10 AM 31° Mostly Cloudy 31% 4 mph W 61%
11 AM 32° Partly Cloudy 31% 4 mph W 56%
12 PM 33° Mostly Clear 39% 4 mph WSW 50%
1 PM 36° Partly Cloudy 35% 4 mph SW 48%
2 PM 36° Partly Cloudy 36% 4 mph SW 47%
3 PM 36° Partly Cloudy 36% 5 mph SSW 47%
4 PM 35° Partly Cloudy 37% 5 mph SSW 55%
5 PM 34° Partly Cloudy 37% 4 mph SW 62%
6 PM 33° Partly Cloudy 19% 4 mph SW 69%
7 PM 32° Partly Cloudy 19% 4 mph SW 74%
8 PM 31° Mostly Cloudy 19% 5 mph SSW 78%
9 PM 29° Mostly Cloudy 20% 6 mph SSW 83%
15-Day Forecast
Today
8/16
Mostly Clear
8%
24°
36°
Mon
8/17
Partly Cloudy
37%
24°
37°
Tue
8/18
Partly Cloudy
35%
26°
39°
Wed
8/19
Partly Cloudy
57%
24°
38°
Thu
8/20
Overcast
30%
24°
39°
Fri
8/21
Rain
64%
24°
39°
Sat
8/22
Rain
64%
23°
38°
Sun
8/23
Thunderstorm
27%
22°
38°
Mon
8/24
Thunderstorm
44%
23°
38°
Tue
8/25
Drizzle
44%
24°
39°
Wed
8/26
Drizzle
60%
24°
38°
Thu
8/27
Drizzle
60%
24°
39°
Fri
8/28
Drizzle
60%
24°
39°
Sat
8/29
Drizzle
60%
23°
38°
Sun
8/30
Drizzle
60%
23°
38°
53
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
53 AQI 10.4 µg/m³
O3
Ground-level ozone
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 39 53
Tue 53 Moderate 31 53
Wed 49 Good 27 49
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 Aug 17, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1987 J/kg
MLCAPE1618 J/kg
MUCAPE2110 J/kg
SBCIN-140 J/kg
MLCIN-95 J/kg
Lifted Index-4.2
Kinematics
0–6 km Shear9 kt
0–1 km Shear4 kt
Eff. Shear6 kt
0–1 km SRH23
0–3 km SRH56
Eff. SRH56
Storm Motion101° @ 18 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index27.2
Thermo & Levels
PWAT1.98 in
0–3 km LR5.2 °C/km
700–500 LR5.7 °C/km
Total Totals43.9
LCL973 hPa
LFC803 hPa
EL146 hPa
Freezing Lvl16,677 ft