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 Sandy Hook to Manasquan Inlet NJ out 20 NM, AN

Last updated: 8:07 PM CDT  ·  Refresh
29°C
Feels like 34°
Mostly Cloudy
▲ 33°  /  ▼ 25°
Wind
6 mph WNW
Humidity
80%
Dew Point
26°
Pressure
29.74 inHg
Visibility
6 mi
UV Index
0.0
Cloud Cover
65%
Sunrise
6:16 AM
Sunset
8:05 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM is currently mostly cloudy at 29°C. Precipitation is likely — peak probability 74% around 8 PM. Atmospheric instability is elevated (CAPE up to 2246 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
29°
50%
8 PM
29°
74%
9 PM
28°
63%
10 PM
28°
53%
11 PM
28°
33%
12 AM
28°
9%
1 AM
27°
4%
2 AM
27°
4%
3 AM
27°
4%
4 AM
27°
5%
5 AM
25°
5%
6 AM
25°
5%
7 AM
27°
10%
8 AM
28°
14%
9 AM
29°
23%
10 AM
31°
23%
11 AM
32°
23%
12 PM
33°
24%
1 PM
33°
24%
2 PM
34°
29%
3 PM
35°
28%
4 PM
34°
40%
5 PM
34°
36%
6 PM
33°
26%
7-Day Forecast
Tonight
33° 25°
Mostly Cloudy with a 53% chance of rain.
Wed
36° 25°
Mostly Clear with a 36% chance of rain.
Thu
33° 25°
Partly Cloudy with a 65% chance of rain.
Fri
34° 25°
Mostly Cloudy with a 57% chance of rain.
Sat
34° 24°
Drizzle, 50% chance.
Sun
35° 24°
Clear.
Mon
35° 24°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Cloudy 50% 6 mph WNW 80%
8 PM 29° Rain 74% 5 mph NW 86%
9 PM 28° Thunderstorm 63% 5 mph NW 89%
10 PM 28° Partly Cloudy 53% 5 mph N 89%
11 PM 28° Partly Cloudy 33% 4 mph NW 89%
12 AM 28° Partly Cloudy 9% 3 mph NNW 89%
1 AM 27° Mostly Clear 4% 4 mph N 89%
2 AM 27° Mostly Clear 4% 4 mph N 89%
3 AM 27° Mostly Clear 4% 4 mph N 88%
4 AM 27° Mostly Clear 5% 5 mph N 87%
5 AM 25° Mostly Clear 5% 6 mph NNW 86%
6 AM 25° Partly Cloudy 5% 6 mph NNW 86%
7 AM 27° Mostly Clear 10% 8 mph N 80%
8 AM 28° Mostly Clear 14% 9 mph N 73%
9 AM 29° Mostly Clear 23% 10 mph N 68%
10 AM 31° Mostly Clear 23% 11 mph N 63%
11 AM 32° Clear 23% 12 mph N 59%
12 PM 33° Clear 24% 13 mph NNE 55%
1 PM 33° Mostly Clear 24% 13 mph NNE 54%
2 PM 34° Mostly Clear 29% 13 mph NNE 53%
3 PM 35° Partly Cloudy 28% 14 mph NNE 52%
4 PM 34° Partly Cloudy 40% 13 mph NNE 56%
5 PM 34° Partly Cloudy 36% 12 mph NNE 60%
6 PM 33° Partly Cloudy 26% 12 mph NE 65%
15-Day Forecast
Today
7/21
Mostly Cloudy
53%
25°
33°
Wed
7/22
Mostly Clear
36%
25°
36°
Thu
7/23
Partly Cloudy
65%
25°
33°
Fri
7/24
Mostly Cloudy
57%
25°
34°
Sat
7/25
Drizzle
50%
24°
34°
Sun
7/26
Clear
16%
24°
35°
Mon
7/27
Clear
8%
24°
35°
Tue
7/28
Clear
8%
24°
36°
Wed
7/29
Thunderstorm
44%
24°
37°
Thu
7/30
Thunderstorm
51%
24°
37°
Fri
7/31
Drizzle
51%
24°
36°
Sat
8/1
Drizzle
60%
24°
36°
Sun
8/2
Drizzle
60%
24°
34°
Mon
8/3
Drizzle
60%
23°
34°
Tue
8/4
Drizzle
60%
24°
34°
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
Today 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, 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
SBCAPE2741 J/kg
MLCAPE3260 J/kg
MUCAPE3556 J/kg
SBCIN-108 J/kg
MLCIN0 J/kg
Lifted Index-4.3
Kinematics
0–6 km Shear22 kt
0–1 km Shear16 kt
Eff. Shear35 kt
0–1 km SRH-17
0–3 km SRH-42
Eff. SRH-42
Storm Motion349° @ 28 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index37.3
Thermo & Levels
PWAT2.42 in
0–3 km LR5.6 °C/km
700–500 LR4.9 °C/km
Total Totals45.3
LCL964 hPa
LFC848 hPa
EL130 hPa
Freezing Lvl17,726 ft