Today | Weather | Tuesday, September 1, 2026

Active Weather Warnings

Heat Advisory

Weather in Lafayette, Indiana

11:25 AM

Now

82° F

Feels Like 93°

Precipitation 0 %

Wind 7 mph

UV Index (0 - 11+) 5

Humidity 72 %

Today

Day 93°

Night 72°

Precipitation 3 %

Wind 7 mph

UV Index (0 - 11+) 7

Lafayette Weather Forecast Updated

25 minutes ago

Last updated on September 01, 2026 at 10:59 AM

Air Quality in Lafayette

NOW

44 AQI

Good air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 10.51 µg/m³

PM₁₀ 11.05 µg/m³

O₃ 0.034 ppm

NO₂ 1.2 ppb

SO₂ 0.9 ppb

CO 0.14 ppm

NH₃ 1.14 µg/m³

NO 0.48 µg/m³

PM_2.5 – 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 10.51 µg/m³

PM₁₀ – 11.05 µg/m³

O₃ – 66.55 µg/m³

NO₂ – 2.32 µg/m³

SO₂ – 2.24 µg/m³

CO – 159.41 µg/m³

NH₃ – 1.14 µg/m³

NO – 0.48 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Lafayette

Moderate Expected Likely

Heat Advisory

Heat Advisory issued September 1 at 4:36AM EDT until September 3 at 8:00PM EDT by NWS Indianapolis IN

Sep 1, 2:00 PM → Sep 3, 8:00 PM

WHAT: Peak heat index values up to 105 are expected each afternoon
with limited relief from the heat and humidity overnight.

WHERE: All of central Indiana.

WHEN: From 2 PM this afternoon to 8 PM EDT Thursday.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.

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Drink plenty of fluids, limit time outdoors, and check up on relatives and neighbors.

Updated: Sep 1, 10:59 AM Source: NWS Alert