Today | Weather | Friday, September 18, 2026

Weather in New Orleans, Louisiana

11:44 AM
Now
Cloudy Weather
90° F
Feels Like 99°
Precipitation 19 %
Wind 9 mph
UV Index (0 - 11+) 7
Humidity 53 %
Today
Sunny with a Chance of Thunderstorms
Day 91°
Night 73°
Precipitation 100 %
Wind 8 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

New Orleans Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 18, 2025)
Night

Day

90°

Night

70°

Wind

5 mph

Precipitation

0 %

Air Quality in New Orleans

NOW
56 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.04 µg/m³
PM10 9.75 µg/m³
O3 0.056 ppm
NO2 0.1 ppb
SO2 0.1 ppb
CO 0.10 ppm
NH3 0.05 µg/m³
NO 0.02 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.53.04 µg/m³
PM109.75 µg/m³
O3109.81 µg/m³
NO20.14 µg/m³
SO20.22 µg/m³
CO118.09 µg/m³
NH30.05 µg/m³
NO0.02 µg/m³