Today | Weather | Wednesday, March 18, 2026

Weather in Lafayette, Louisiana

04:05 AM
Now
Cloudy Night
43° F
Feels Like 45°
Precipitation 0 %
Wind 2 mph
Humidity 73 %
Today
Cloudy Weather
Day 66°
Night 48°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 5

Lafayette Weather Forecast Updated

28 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 18, 2025)
Cloudy Weather

Day

73°

Night

66°

Wind

12 mph

UV Index

7

Precipitation

0 %

Air Quality in Lafayette

NOW
82 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.67 µg/m³
PM10 2.38 µg/m³
O3 0.064 ppm
NO2 0.2 ppb
SO2 0.4 ppb
CO 0.12 ppm
NH3 0.66 µg/m³
NO 0 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)
PM2.51.67 µg/m³
PM102.38 µg/m³
O3126.1 µg/m³
NO20.38 µg/m³
SO21.13 µg/m³
CO138.76 µg/m³
NH30.66 µg/m³
NO0 µg/m³