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, Central Plaquemines, LA, Central Jefferson, 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: 1:29 AM CDT  ·  Refresh
27°C
Feels like 31°
Clear
▲ 36°  /  ▼ 25°
Wind
5 mph WSW
Humidity
91%
Dew Point
25°
Pressure
29.88 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
2%
Sunrise
6:19 AM
Sunset
7:59 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. James Parish is currently clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2414 J/kg) — isolated convective development possible. Sunrise: 6:19AM · Sunset: 7:59PM.

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, Central Plaquemines, LA, Central Jefferson, 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
37 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
11%
2 AM
27°
13%
3 AM
27°
4%
4 AM
26°
15%
5 AM
25°
15%
6 AM
24°
15%
7 AM
26°
15%
8 AM
27°
16%
9 AM
29°
16%
10 AM
31°
8%
11 AM
32°
5%
12 PM
33°
5%
1 PM
35°
5%
2 PM
35°
5%
3 PM
35°
5%
4 PM
35°
5%
5 PM
34°
5%
6 PM
34°
5%
7 PM
33°
5%
8 PM
31°
5%
9 PM
30°
5%
10 PM
29°
3%
11 PM
29°
3%
12 AM
28°
3%
7-Day Forecast
Today
36° 25°
Mostly Clear.
Wed
37° 25°
Partly Cloudy.
Thu
36° 26°
Mostly Cloudy with a 64% chance of rain.
Fri
35° 25°
Overcast with a 63% chance of rain.
Sat
35° 24°
Rain, 64% chance.
Sun
36° 24°
Rain, 78% chance.
Mon
37° 23°
Drizzle, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Clear 11% 5 mph WSW 91%
2 AM 27° Mostly Clear 13% 5 mph W 91%
3 AM 27° Mostly Clear 4% 5 mph W 92%
4 AM 26° Mostly Clear 15% 5 mph W 92%
5 AM 25° Mostly Clear 15% 5 mph W 92%
6 AM 24° Mostly Clear 15% 5 mph W 92%
7 AM 26° Mostly Clear 15% 6 mph WNW 89%
8 AM 27° Mostly Clear 16% 8 mph WNW 83%
9 AM 29° Clear 16% 8 mph WNW 76%
10 AM 31° Mostly Clear 8% 8 mph WNW 70%
11 AM 32° Mostly Clear 5% 7 mph WNW 64%
12 PM 33° Mostly Clear 5% 6 mph WNW 59%
1 PM 35° Mostly Clear 5% 5 mph WNW 56%
2 PM 35° Clear 5% 6 mph W 55%
3 PM 35° Clear 5% 6 mph WSW 54%
4 PM 35° Clear 5% 7 mph WSW 56%
5 PM 34° Clear 5% 7 mph WSW 60%
6 PM 34° Clear 5% 7 mph WSW 65%
7 PM 33° Clear 5% 7 mph WSW 70%
8 PM 31° Clear 5% 7 mph SW 76%
9 PM 30° Clear 5% 6 mph SW 80%
10 PM 29° Clear 3% 6 mph SW 83%
11 PM 29° Mostly Clear 3% 6 mph SW 85%
12 AM 28° Mostly Clear 3% 6 mph WSW 88%
15-Day Forecast
Today
7/28
Mostly Clear
15%
25°
36°
Wed
7/29
Partly Cloudy
6%
25°
37°
Thu
7/30
Mostly Cloudy
64%
26°
36°
Fri
7/31
Overcast
63%
25°
35°
Sat
8/1
Rain
64%
24°
35°
Sun
8/2
Rain
78%
24°
36°
Mon
8/3
Drizzle
63%
23°
37°
Tue
8/4
Rain
68%
24°
37°
Wed
8/5
Thunderstorm
68%
24°
37°
Thu
8/6
Drizzle
51%
24°
38°
Fri
8/7
Drizzle
60%
24°
36°
Sat
8/8
Drizzle
60%
24°
35°
Sun
8/9
Drizzle
60%
24°
36°
Mon
8/10
Drizzle
60%
24°
36°
Tue
8/11
Drizzle
60%
24°
37°
37
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
37 AQI 6.6 µg/m³
O3
Ground-level ozone
29 AQI 31 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 37 Good 29 37
Wed 44 Good 28 44
Thu 53 Moderate 28 53
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 Tue Jul 28, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1606 J/kg
MLCAPE1407 J/kg
MUCAPE1654 J/kg
SBCIN-112 J/kg
MLCIN0 J/kg
Lifted Index-3.4
Kinematics
0–6 km Shear25 kt
0–1 km Shear4 kt
Eff. Shear24 kt
0–1 km SRH6
0–3 km SRH-14
Eff. SRH-14
Storm Motion332° @ 17 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.0
K-Index26.0
Thermo & Levels
PWAT1.76 in
0–3 km LR5.0 °C/km
700–500 LR5.1 °C/km
Total Totals40.6
LCL991 hPa
LFC796 hPa
EL159 hPa
Freezing Lvl17,415 ft