Extreme Heat Warning — St. James, LA, St. John The Baptist, LA, Upper 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 Jefferson, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM Extreme Heat Warning — St. James, LA, St. John The Baptist, LA, Upper 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 Jefferson, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, 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: 5:20 PM CDT  ·  Refresh
32°C
Feels like 41°
Partly Cloudy
▲ 37°  /  ▼ 24°
Wind
4 mph S
Humidity
68%
Dew Point
25°
Pressure
30.00 inHg
Visibility
9 mi
UV Index
5.7
Cloud Cover
40%
Sunrise
6:31 AM
Sunset
7:42 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. James Parish is currently partly cloudy at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2827 J/kg) — isolated convective development possible. Sunrise: 6:31AM · Sunset: 7:42PM.

Alerts

Extreme Heat Warning
St. James, LA, St. John The Baptist, LA, Upper 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 Jefferson, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, 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
St. James, LA, St. John The Baptist, LA, Upper 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 Jefferson, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, 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
32°
22%
6 PM
32°
39%
7 PM
31°
38%
8 PM
30°
38%
9 PM
29°
21%
10 PM
29°
21%
11 PM
28°
18%
12 AM
28°
17%
1 AM
27°
3%
2 AM
27°
5%
3 AM
27°
5%
4 AM
26°
5%
5 AM
24°
5%
6 AM
24°
8%
7 AM
25°
8%
8 AM
27°
9%
9 AM
28°
9%
10 AM
29°
9%
11 AM
29°
9%
12 PM
32°
9%
1 PM
34°
9%
2 PM
34°
11%
3 PM
34°
11%
4 PM
34°
11%
7-Day Forecast
Today
37° 24°
Partly Cloudy with a 38% chance of rain.
Tue
37° 24°
Partly Cloudy.
Wed
37° 25°
Partly Cloudy with a 22% chance of rain.
Thu
36° 24°
Mostly Cloudy with a 52% chance of rain.
Fri
38° 24°
Thunderstorm, 60% chance.
Sat
37° 24°
Drizzle, 60% chance.
Sun
37° 24°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 32° Partly Cloudy 22% 4 mph S 67%
6 PM 32° Partly Cloudy 39% 7 mph W 78%
7 PM 31° Partly Cloudy 38% 10 mph NW 82%
8 PM 30° Partly Cloudy 38% 8 mph WSW 83%
9 PM 29° Mostly Clear 21% 6 mph SW 83%
10 PM 29° Mostly Clear 21% 7 mph SW 84%
11 PM 28° Partly Cloudy 18% 6 mph SW 85%
12 AM 28° Partly Cloudy 17% 5 mph SW 87%
1 AM 27° Partly Cloudy 3% 5 mph SW 88%
2 AM 27° Mostly Cloudy 5% 5 mph SW 88%
3 AM 27° Mostly Cloudy 5% 4 mph WSW 88%
4 AM 26° Mostly Cloudy 5% 4 mph WSW 89%
5 AM 24° Mostly Cloudy 5% 4 mph WSW 90%
6 AM 24° Mostly Cloudy 8% 4 mph W 90%
7 AM 25° Mostly Cloudy 8% 4 mph WNW 90%
8 AM 27° Mostly Cloudy 9% 5 mph WNW 86%
9 AM 28° Partly Cloudy 9% 6 mph WNW 81%
10 AM 29° Partly Cloudy 9% 6 mph WNW 76%
11 AM 29° Mostly Cloudy 9% 5 mph W 70%
12 PM 32° Mostly Cloudy 9% 5 mph W 64%
1 PM 34° Mostly Cloudy 9% 5 mph W 60%
2 PM 34° Mostly Cloudy 11% 5 mph W 59%
3 PM 34° Mostly Cloudy 11% 5 mph WSW 57%
4 PM 34° Mostly Cloudy 11% 5 mph WSW 56%
15-Day Forecast
Today
8/17
Partly Cloudy
38%
24°
37°
Tue
8/18
Partly Cloudy
12%
24°
37°
Wed
8/19
Partly Cloudy
22%
25°
37°
Thu
8/20
Mostly Cloudy
52%
24°
36°
Fri
8/21
Thunderstorm
60%
24°
38°
Sat
8/22
Drizzle
60%
24°
37°
Sun
8/23
Drizzle
53%
24°
37°
Mon
8/24
Drizzle
60%
24°
38°
Tue
8/25
Drizzle
60%
24°
37°
Wed
8/26
Drizzle
60%
24°
38°
Thu
8/27
Drizzle
60%
24°
37°
Fri
8/28
Drizzle
60%
24°
37°
Sat
8/29
Drizzle
60%
23°
37°
Sun
8/30
Drizzle
60%
23°
37°
Mon
8/31
Drizzle
60%
23°
37°
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 10.1 µg/m³
O3
Ground-level ozone
35 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 53 Moderate 35 53
Wed 50 Good 31 50
Thu 45 Good 19 45
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, 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
SBCAPE3412 J/kg
MLCAPE2369 J/kg
MUCAPE3412 J/kg
SBCIN-51 J/kg
MLCIN-30 J/kg
Lifted Index-7.2
Kinematics
0–6 km Shear3 kt
0–1 km Shear2 kt
Eff. Shear10 kt
0–1 km SRH11
0–3 km SRH12
Eff. SRH12
Storm Motion45° @ 16 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.6
Thermo & Levels
PWAT2.12 in
0–3 km LR7.1 °C/km
700–500 LR5.7 °C/km
Total Totals48.0
LCL906 hPa
LFC858 hPa
EL129 hPa
Freezing Lvl16,775 ft