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

Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM, PK

Last updated: 2:47 PM CDT  ·  Refresh
34°C
Feels like 42°
Mostly Cloudy
▲ 36°  /  ▼ 25°
Wind
8 mph N
Humidity
60%
Dew Point
26°
Pressure
29.77 inHg
Visibility
6 mi
UV Index
7.0
Cloud Cover
69%
Sunrise
6:16 AM
Sunset
8:05 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM is currently mostly cloudy at 34°C. Precipitation is likely — peak probability 53% around 5 PM. Atmospheric instability is elevated (CAPE up to 3219 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
34°
37%
3 PM
34°
44%
4 PM
34°
44%
5 PM
35°
52%
6 PM
34°
49%
7 PM
32°
32%
8 PM
32°
31%
9 PM
30°
41%
10 PM
29°
26%
11 PM
29°
25%
12 AM
28°
5%
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°
12%
8 AM
27°
16%
9 AM
30°
27%
10 AM
31°
28%
11 AM
32°
28%
12 PM
32°
29%
1 PM
33°
29%
7-Day Forecast
Today
36° 25°
Partly Cloudy with a 65% chance of rain.
Wed
37° 25°
Partly Cloudy with a 38% chance of rain.
Thu
36° 26°
Partly Cloudy with a 56% chance of rain.
Fri
36° 26°
Partly Cloudy with a 52% chance of rain.
Sat
36° 24°
Drizzle, 60% chance.
Sun
36° 24°
Clear.
Mon
36° 24°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Cloudy 37% 8 mph N 60%
3 PM 34° Mostly Cloudy 44% 8 mph NNW 62%
4 PM 34° Partly Cloudy 44% 8 mph NNW 66%
5 PM 35° Partly Cloudy 52% 8 mph NNW 71%
6 PM 34° Partly Cloudy 49% 8 mph NNW 75%
7 PM 32° Partly Cloudy 32% 7 mph NW 78%
8 PM 32° Partly Cloudy 31% 6 mph NNW 80%
9 PM 30° Partly Cloudy 41% 5 mph N 82%
10 PM 29° Rain 26% 3 mph NNW 84%
11 PM 29° Mostly Clear 25% 3 mph NNW 85%
12 AM 28° Clear 5% 4 mph N 86%
1 AM 28° Mostly Clear 5% 4 mph N 86%
2 AM 28° Partly Cloudy 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% 8 mph N 87%
7 AM 26° Partly Cloudy 12% 8 mph N 83%
8 AM 27° Partly Cloudy 16% 9 mph N 77%
9 AM 30° Partly Cloudy 27% 10 mph N 71%
10 AM 31° Partly Cloudy 28% 11 mph NNE 68%
11 AM 32° Partly Cloudy 28% 12 mph NNE 65%
12 PM 32° Partly Cloudy 29% 12 mph NNE 63%
1 PM 33° Partly Cloudy 29% 12 mph NNE 63%
15-Day Forecast
Today
7/21
Partly Cloudy
65%
25°
36°
Wed
7/22
Partly Cloudy
38%
25°
37°
Thu
7/23
Partly Cloudy
56%
26°
36°
Fri
7/24
Partly Cloudy
52%
26°
36°
Sat
7/25
Drizzle
60%
24°
36°
Sun
7/26
Clear
19%
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, 18:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE4072 J/kg
MLCAPE3523 J/kg
MUCAPE4045 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-6.6
Kinematics
0–6 km Shear16 kt
0–1 km Shear9 kt
Eff. Shear29 kt
0–1 km SRH13
0–3 km SRH-20
Eff. SRH-20
Storm Motion345° @ 29 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.0
K-Index39.8
Thermo & Levels
PWAT2.59 in
0–3 km LR7.6 °C/km
700–500 LR4.9 °C/km
Total Totals44.6
LCL895 hPa
LFC1008 hPa
EL120 hPa
Freezing Lvl17,500 ft