Dense Fog Advisory — 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, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 11:00 AM

St. John the Baptist Parish, Louisiana, United States

Last updated: 1:08 AM CDT  ·  Refresh
22°C
Feels like 24°
Mostly Cloudy
▲ 29°  /  ▼ 21°
Wind
4 mph SSE
Humidity
92%
Dew Point
20°
Pressure
30.05 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
64%
Sunrise
7:03 AM
Sunset
6:31 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. John the Baptist Parish is currently mostly cloudy at 22°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 603 J/kg) — isolated convective development possible. Sunrise: 7:03AM · Sunset: 6:31PM.

Alerts

Dense Fog Advisory
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, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 11:00 AM
71 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
13%
1 AM
22°
5%
2 AM
22°
23%
3 AM
21°
31%
4 AM
21°
37%
5 AM
19°
42%
6 AM
19°
47%
7 AM
19°
47%
8 AM
21°
48%
9 AM
23°
48%
10 AM
24°
49%
11 AM
24°
17%
12 PM
25°
17%
1 PM
28°
17%
2 PM
29°
18%
3 PM
29°
18%
4 PM
28°
18%
5 PM
28°
3%
6 PM
27°
3%
7 PM
26°
3%
8 PM
26°
3%
9 PM
24°
3%
10 PM
24°
3%
11 PM
24°
3%
7-Day Forecast
Today
29° 21°
Mostly Cloudy with a 48% chance of rain.
Fri
29° 18°
Mostly Cloudy with a 25% chance of rain.
Sat
29° 12°
Clear.
Sun
22° 11°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 22° Mostly Cloudy 13% 4 mph SSE 92%
1 AM 22° Mostly Cloudy 5% 4 mph SE 88%
2 AM 22° Mostly Cloudy 23% 4 mph SE 91%
3 AM 21° Overcast 31% 4 mph ESE 92%
4 AM 21° Overcast 37% 3 mph E 94%
5 AM 19° Overcast 42% 3 mph E 95%
6 AM 19° Overcast 47% 3 mph E 97%
7 AM 19° Overcast 47% 3 mph E 98%
8 AM 21° Overcast 48% 4 mph ESE 98%
9 AM 23° Overcast 48% 4 mph E 94%
10 AM 24° Overcast 49% 5 mph E 87%
11 AM 24° Overcast 17% 5 mph E 83%
12 PM 25° Overcast 17% 4 mph E 81%
1 PM 28° Mostly Cloudy 17% 5 mph E 78%
2 PM 29° Partly Cloudy 18% 5 mph E 77%
3 PM 29° Partly Cloudy 18% 5 mph E 76%
4 PM 28° Partly Cloudy 18% 6 mph E 78%
5 PM 28° Partly Cloudy 3% 6 mph E 83%
6 PM 27° Partly Cloudy 3% 7 mph E 84%
7 PM 26° Partly Cloudy 3% 8 mph E 86%
8 PM 26° Partly Cloudy 3% 8 mph E 87%
9 PM 24° Partly Cloudy 3% 8 mph ESE 88%
10 PM 24° Partly Cloudy 3% 7 mph E 89%
11 PM 24° Partly Cloudy 3% 6 mph E 90%
4-Day Forecast
Today
10/15
Mostly Cloudy
48%
21°
29°
Fri
10/16
Mostly Cloudy
25%
18°
29°
Sat
10/17
Clear
3%
12°
29°
Sun
10/18
Clear
3%
11°
22°
71
Moderate
U.S. Air Quality Index · Dominant: O3
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
58 AQI 12.8 µg/m³
O3
Ground-level ozone
Dominant
71 AQI 61 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 71 Moderate 71 58
Fri 56 Moderate 50 56
Sat 46 Good 45 46
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.

Model sounding data is unavailable for this location.