Excessive Heat Warning — St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, 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, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM

St. James Parish, Louisiana, United States

Last updated: 7:24 PM CDT  ·  Refresh
31°C
Feels like 37°
Partly Cloudy
▲ 34°  /  ▼ 25°
Wind
5 mph WSW
Humidity
73%
Dew Point
25°
Pressure
29.86 inHg
Visibility
9 mi
UV Index
1.6
Cloud Cover
54%
Sunrise
6:20 AM
Sunset
7:58 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. James Parish is currently partly cloudy at 30°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2110 J/kg) — isolated convective development possible. Sunrise: 6:20AM · Sunset: 7:58PM.

Alerts

Excessive Heat Warning
St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, 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, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
12%
8 PM
31°
29%
9 PM
29°
23%
10 PM
28°
23%
11 PM
28°
23%
12 AM
27°
15%
1 AM
27°
7%
2 AM
27°
12%
3 AM
27°
12%
4 AM
26°
12%
5 AM
25°
12%
6 AM
25°
12%
7 AM
26°
20%
8 AM
27°
22%
9 AM
29°
23%
10 AM
30°
23%
11 AM
31°
26%
12 PM
32°
27%
1 PM
33°
27%
2 PM
33°
27%
3 PM
33°
31%
4 PM
33°
32%
5 PM
32°
28%
6 PM
32°
26%
7-Day Forecast
Tonight
34° 25°
Partly Cloudy with a 23% chance of rain.
Thu
35° 25°
Mostly Cloudy with a 29% chance of rain.
Fri
34° 26°
Mostly Cloudy with a 49% chance of rain.
Sat
34° 25°
Mostly Cloudy with a 60% chance of rain.
Sun
33° 23°
Rain, 80% chance.
Mon
33° 23°
Rain, 65% chance.
Tue
34° 23°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 31° Partly Cloudy 12% 5 mph WSW 73%
8 PM 31° Mostly Cloudy 29% 5 mph SW 81%
9 PM 29° Overcast 23% 5 mph SW 85%
10 PM 28° Mostly Cloudy 23% 5 mph SW 87%
11 PM 28° Mostly Cloudy 23% 5 mph WSW 88%
12 AM 27° Mostly Cloudy 15% 5 mph WSW 89%
1 AM 27° Mostly Cloudy 7% 5 mph WSW 90%
2 AM 27° Mostly Cloudy 12% 5 mph WSW 91%
3 AM 27° Mostly Cloudy 12% 4 mph WSW 92%
4 AM 26° Mostly Cloudy 12% 4 mph W 93%
5 AM 25° Mostly Cloudy 12% 4 mph W 93%
6 AM 25° Mostly Cloudy 12% 4 mph W 94%
7 AM 26° Mostly Cloudy 20% 5 mph W 91%
8 AM 27° Mostly Cloudy 22% 6 mph W 84%
9 AM 29° Partly Cloudy 23% 7 mph W 77%
10 AM 30° Partly Cloudy 23% 7 mph W 71%
11 AM 31° Partly Cloudy 26% 6 mph W 67%
12 PM 32° Partly Cloudy 27% 6 mph W 64%
1 PM 33° Partly Cloudy 27% 6 mph W 61%
2 PM 33° Partly Cloudy 27% 7 mph W 60%
3 PM 33° Mostly Cloudy 31% 7 mph W 60%
4 PM 33° Mostly Cloudy 32% 8 mph W 62%
5 PM 32° Mostly Cloudy 28% 7 mph W 66%
6 PM 32° Mostly Cloudy 26% 7 mph WSW 70%
15-Day Forecast
Today
7/29
Partly Cloudy
23%
25°
34°
Thu
7/30
Mostly Cloudy
29%
25°
35°
Fri
7/31
Mostly Cloudy
49%
26°
34°
Sat
8/1
Mostly Cloudy
60%
25°
34°
Sun
8/2
Rain
80%
23°
33°
Mon
8/3
Rain
65%
23°
33°
Tue
8/4
Drizzle
53%
23°
34°
Wed
8/5
Rain
66%
24°
36°
Thu
8/6
Rain
66%
24°
36°
Fri
8/7
Drizzle
52%
24°
36°
Sat
8/8
Drizzle
60%
24°
36°
Sun
8/9
Drizzle
60%
24°
36°
Mon
8/10
Drizzle
60%
24°
36°
Tue
8/11
Drizzle
60%
24°
36°
Wed
8/12
Drizzle
60%
24°
36°
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 11.2 µg/m³
O3
Ground-level ozone
35 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 35 55
Fri 55 Moderate 35 55
Sat 46 Good 19 46
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 Wed Jul 29, 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
SBCAPE2453 J/kg
MLCAPE1561 J/kg
MUCAPE2453 J/kg
SBCIN-72 J/kg
MLCIN0 J/kg
Lifted Index-5.5
Kinematics
0–6 km Shear10 kt
0–1 km Shear7 kt
Eff. Shear14 kt
0–1 km SRH10
0–3 km SRH10
Eff. SRH10
Storm Motion298° @ 17 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.2
K-Index23.9
Thermo & Levels
PWAT1.99 in
0–3 km LR5.9 °C/km
700–500 LR5.7 °C/km
Total Totals43.7
LCL936 hPa
LFC879 hPa
EL134 hPa
Freezing Lvl16,978 ft