Flood Warning — East Baton Rouge County, LA Excessive 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 8:00 PM

Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM, AM

Last updated: 3:18 PM CDT  ·  Refresh
32°C
Feels like 38°
Mostly Cloudy
▲ 36°  /  ▼ 25°
Wind
9 mph NW
Humidity
61%
Dew Point
26°
Pressure
29.77 inHg
Visibility
10 mi
UV Index
6.5
Cloud Cover
71%
Sunrise
6:16 AM
Sunset
8:05 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM is currently mostly cloudy at 32°C. Precipitation is likely — peak probability 65% around 4 PM. Atmospheric instability is elevated (CAPE up to 3088 J/kg) — isolated convective development possible. Sunrise: 6:16AM · Sunset: 8:05PM.

58 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
60%
4 PM
33°
65%
5 PM
34°
52%
6 PM
34°
49%
7 PM
33°
47%
8 PM
32°
57%
9 PM
30°
39%
10 PM
29°
39%
11 PM
29°
38%
12 AM
28°
25%
1 AM
28°
5%
2 AM
28°
5%
3 AM
27°
5%
4 AM
27°
5%
5 AM
26°
5%
6 AM
25°
5%
7 AM
26°
5%
8 AM
27°
16%
9 AM
28°
16%
10 AM
30°
27%
11 AM
31°
28%
12 PM
32°
28%
1 PM
33°
29%
2 PM
32°
33%
7-Day Forecast
Today
36° 25°
Partly Cloudy with a 60% chance of rain.
Wed
37° 25°
Partly Cloudy with a 50% chance of rain.
Thu
36° 26°
Partly Cloudy with a 60% chance of rain.
Fri
36° 26°
Mostly Clear with a 52% chance of rain.
Sat
36° 24°
Drizzle, 60% chance.
Sun
36° 24°
Clear.
Mon
36° 24°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 32° Mostly Cloudy 60% 9 mph NW 61%
4 PM 33° Mostly Cloudy 65% 6 mph NNW 65%
5 PM 34° Partly Cloudy 52% 7 mph NNW 70%
6 PM 34° Partly Cloudy 49% 7 mph NNW 75%
7 PM 33° Partly Cloudy 47% 7 mph NNW 78%
8 PM 32° Mostly Cloudy 57% 6 mph NW 81%
9 PM 30° Partly Cloudy 39% 4 mph NNW 82%
10 PM 29° Partly Cloudy 39% 6 mph NE 84%
11 PM 29° Partly Cloudy 38% 4 mph NW 85%
12 AM 28° Mostly Clear 25% 4 mph NNW 86%
1 AM 28° Clear 5% 4 mph N 86%
2 AM 28° Mostly Clear 5% 4 mph N 87%
3 AM 27° Partly Cloudy 5% 4 mph N 88%
4 AM 27° Partly Cloudy 5% 5 mph N 88%
5 AM 26° Partly Cloudy 5% 6 mph N 88%
6 AM 25° Partly Cloudy 5% 7 mph N 87%
7 AM 26° Partly Cloudy 5% 7 mph N 85%
8 AM 27° Partly Cloudy 16% 8 mph N 80%
9 AM 28° Partly Cloudy 16% 9 mph N 75%
10 AM 30° Partly Cloudy 27% 10 mph NNE 71%
11 AM 31° Partly Cloudy 28% 11 mph NNE 68%
12 PM 32° Partly Cloudy 28% 11 mph NNE 66%
1 PM 33° Partly Cloudy 29% 12 mph NNE 64%
2 PM 32° Partly Cloudy 33% 12 mph NNE 67%
15-Day Forecast
Today
7/21
Partly Cloudy
60%
25°
36°
Wed
7/22
Partly Cloudy
50%
25°
37°
Thu
7/23
Partly Cloudy
60%
26°
36°
Fri
7/24
Mostly Clear
52%
26°
36°
Sat
7/25
Drizzle
60%
24°
36°
Sun
7/26
Clear
9%
24°
36°
Mon
7/27
Clear
9%
24°
36°
Tue
7/28
Clear
9%
24°
37°
Wed
7/29
Drizzle
60%
24°
37°
Thu
7/30
Drizzle
60%
24°
37°
Fri
7/31
Drizzle
60%
24°
36°
Sat
8/1
Drizzle
60%
24°
36°
Sun
8/2
Drizzle
60%
24°
36°
Mon
8/3
Drizzle
60%
23°
36°
Tue
8/4
Drizzle
60%
24°
36°
58
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
58 AQI 13.0 µg/m³
O3
Ground-level ozone
27 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 58 Moderate 27 58
Thu 49 Good 26 49
Fri 39 Good 34 39
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 21, 19:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3742 J/kg
MLCAPE3367 J/kg
MUCAPE4012 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-6.4
Kinematics
0–6 km Shear18 kt
0–1 km Shear9 kt
Eff. Shear32 kt
0–1 km SRH-3
0–3 km SRH-35
Eff. SRH-35
Storm Motion348° @ 30 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.0
Thermo & Levels
PWAT2.57 in
0–3 km LR6.9 °C/km
700–500 LR5.1 °C/km
Total Totals45.0
LCL916 hPa
LFC1008 hPa
EL121 hPa
Freezing Lvl17,385 ft