Tropical Storm Watch Heat 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 7:00 PM Coastal Flood Advisory — St. John The Baptist, LA, Southwestern St. Tammany, LA, Lower Tangipahoa, LA, Coastal Jefferson, LA, Lower Lafourche, LA, Lower Terrebonne, LA, Upper St. Charles, LA 4:00 AM

Norco, Louisiana

Last updated: 10:55 AM CDT  ·  Refresh
31°C
Feels like 36°
Mostly Clear
▲ 37°  /  ▼ 26°
Wind
6 mph N
Humidity
64%
Dew Point
24°
Pressure
29.85 inHg
Visibility
10 mi
UV Index
9.0
Cloud Cover
22%
Sunrise
6:14 AM
Sunset
8:01 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Norco is currently mostly clear at 31°C. Precipitation is likely — peak probability 58% around 4 PM. Atmospheric instability is elevated (CAPE up to 2895 J/kg) — isolated convective development possible. Sunrise: 6:14AM · Sunset: 8:01PM.

65 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
10%
11 AM
34°
28%
12 PM
35°
35%
1 PM
36°
39%
2 PM
36°
45%
3 PM
34°
50%
4 PM
34°
58%
5 PM
33°
54%
6 PM
32°
54%
7 PM
31°
40%
8 PM
31°
33%
9 PM
29°
33%
10 PM
28°
26%
11 PM
28°
23%
12 AM
28°
9%
1 AM
27°
9%
2 AM
27°
13%
3 AM
26°
19%
4 AM
26°
19%
5 AM
26°
15%
6 AM
26°
15%
7 AM
27°
25%
8 AM
27°
26%
9 AM
29°
26%
7-Day Forecast
Today
37° 26°
Partly Cloudy with a 58% chance of rain.
Wed
34° 26°
Mostly Cloudy with a 76% chance of rain.
Thu
35° 26°
Mostly Clear with a 74% chance of rain.
Fri
35° 24°
Mostly Clear with a 60% chance of rain.
Sat
36° 24°
Rain, 69% chance.
Sun
36° 24°
Rain, 70% chance.
Mon
37° 24°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 31° Mostly Clear 10% 6 mph N 64%
11 AM 34° Mostly Clear 28% 6 mph N 60%
12 PM 35° Partly Cloudy 35% 8 mph NNW 58%
1 PM 36° Mostly Clear 39% 8 mph NNW 61%
2 PM 36° Partly Cloudy 45% 8 mph NNW 62%
3 PM 34° Rain 50% 8 mph N 63%
4 PM 34° Partly Cloudy 58% 8 mph NW 65%
5 PM 33° Rain 54% 7 mph NNW 68%
6 PM 32° Partly Cloudy 54% 8 mph NW 73%
7 PM 31° Partly Cloudy 40% 8 mph NW 75%
8 PM 31° Mostly Clear 33% 8 mph NNW 75%
9 PM 29° Mostly Clear 33% 8 mph NNW 76%
10 PM 28° Partly Cloudy 26% 8 mph NNW 78%
11 PM 28° Partly Cloudy 23% 8 mph N 81%
12 AM 28° Partly Cloudy 9% 8 mph N 84%
1 AM 27° Partly Cloudy 9% 8 mph N 84%
2 AM 27° Partly Cloudy 13% 9 mph N 83%
3 AM 26° Mostly Clear 19% 9 mph N 83%
4 AM 26° Partly Cloudy 19% 10 mph N 83%
5 AM 26° Partly Cloudy 15% 11 mph N 83%
6 AM 26° Partly Cloudy 15% 12 mph N 84%
7 AM 27° Partly Cloudy 25% 13 mph N 82%
8 AM 27° Partly Cloudy 26% 14 mph N 79%
9 AM 29° Partly Cloudy 26% 15 mph NNE 77%
15-Day Forecast
Today
7/21
Partly Cloudy
58%
26°
37°
Wed
7/22
Mostly Cloudy
76%
26°
34°
Thu
7/23
Mostly Clear
74%
26°
35°
Fri
7/24
Mostly Clear
60%
24°
35°
Sat
7/25
Rain
69%
24°
36°
Sun
7/26
Rain
70%
24°
36°
Mon
7/27
Clear
17%
24°
37°
Tue
7/28
Drizzle
42%
24°
37°
Wed
7/29
Thunderstorm
44%
25°
37°
Thu
7/30
Thunderstorm
64%
25°
37°
Fri
7/31
Drizzle
60%
24°
37°
Sat
8/1
Drizzle
60%
24°
36°
Sun
8/2
Drizzle
60%
24°
36°
Mon
8/3
Drizzle
60%
24°
36°
Tue
8/4
Rain
90%
24°
35°
65
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
65 AQI 16.6 µg/m³
O3
Ground-level ozone
30 AQI 33 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 65 Moderate 30 65
Thu 48 Good 31 48
Fri 48 Good 28 48
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, 14:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2463 J/kg
MLCAPE738 J/kg
MUCAPE2463 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.1
Kinematics
0–6 km Shear22 kt
0–1 km Shear12 kt
Eff. Shear28 kt
0–1 km SRH-1
0–3 km SRH-29
Eff. SRH-29
Storm Motion350° @ 31 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.8
Thermo & Levels
PWAT2.11 in
0–3 km LR6.7 °C/km
700–500 LR4.9 °C/km
Total Totals42.6
LCL917 hPa
LFC1011 hPa
EL141 hPa
Freezing Lvl17,510 ft