Hourly Weather Forecast for Lafayette, Indiana

Hourly Weather | Today › Tuesday, September 1, 2026

Active Weather Warnings

Heat Advisory

Lafayette, Indiana

12 PM

86°

Feels Like 99°

Humidity: 65%

UV Index: 6

Wind: 7 mph

1 PM

90°

Feels Like 100°

Humidity: 61%

UV Index: 7

Wind: 8 mph

2 PM

90°

Feels Like 102°

Humidity: 57%

UV Index: 6

Wind: 8 mph

3 PM

91°

Feels Like 102°

Humidity: 55%

UV Index: 5

Wind: 8 mph

4 PM

93°

Feels Like 102°

Humidity: 53%

UV Index: 4

Wind: 8 mph

5 PM

91°

Feels Like 100°

Humidity: 55%

UV Index: 2

Wind: 8 mph

6 PM

91°

Feels Like 99°

Humidity: 57%

UV Index: 1

Wind: 7 mph

7 PM

90°

Feels Like 97°

Humidity: 62%

UV Index: 0

Wind: 6 mph

8 PM

86°

Feels Like 95°

Humidity: 71%

UV Index: 0

Wind: 5 mph

9 PM

82°

Feels Like 93°

Humidity: 78%

UV Index: 0

Wind: 4 mph

10 PM

81°

Feels Like 90°

Humidity: 83%

UV Index: 0

Wind: 4 mph

11 PM

77°

Feels Like 86°

Humidity: 90%

UV Index: 0

Wind: 2 mph

Hourly Air Quality Forecast - AQI (US EPA)

12 PM

48 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.55 µg/m³
PM₁₀: 12.15 µg/m³
O₃: 0.044 ppm
NO₂: 0.9 ppb
SO₂: 1.2 ppb
CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM

50 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 12.21 µg/m³
PM₁₀: 12.84 µg/m³
O₃: 0.050 ppm
NO₂: 0.8 ppb
SO₂: 1.2 ppb
CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM

52 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 12.76 µg/m³
PM₁₀: 13.42 µg/m³
O₃: 0.053 ppm
NO₂: 0.7 ppb
SO₂: 1.3 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM

56 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 12.8 µg/m³
PM₁₀: 13.45 µg/m³
O₃: 0.056 ppm
NO₂: 0.6 ppb
SO₂: 1.1 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM

51 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 12.06 µg/m³
PM₁₀: 12.69 µg/m³
O₃: 0.054 ppm
NO₂: 0.6 ppb
SO₂: 0.9 ppb
CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM

48 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.5 µg/m³
PM₁₀: 12.13 µg/m³
O₃: 0.052 ppm
NO₂: 0.7 ppb
SO₂: 0.8 ppb
CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM

47 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.32 µg/m³
PM₁₀: 11.95 µg/m³
O₃: 0.047 ppm
NO₂: 1.2 ppb
SO₂: 0.7 ppb
CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM

47 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.26 µg/m³
PM₁₀: 11.91 µg/m³
O₃: 0.038 ppm
NO₂: 2.2 ppb
SO₂: 0.5 ppb
CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM

47 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.21 µg/m³
PM₁₀: 11.88 µg/m³
O₃: 0.031 ppm
NO₂: 3.2 ppb
SO₂: 0.4 ppb
CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM

46 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.13 µg/m³
PM₁₀: 11.82 µg/m³
O₃: 0.027 ppm
NO₂: 3.5 ppb
SO₂: 0.4 ppb
CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM

46 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.09 µg/m³
PM₁₀: 11.77 µg/m³
O₃: 0.025 ppm
NO₂: 3.4 ppb
SO₂: 0.3 ppb
CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM

46 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 10.93 µg/m³
PM₁₀: 11.59 µg/m³
O₃: 0.025 ppm
NO₂: 3 ppb
SO₂: 0.3 ppb
CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Current Real-Time Air Quality Report

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.

+ Read More

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

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

Hourly Air Quality Forecast - AQI (US EPA)

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Weather Alerts and Warnings for Lafayette

Heat Advisory

Explore U.S. Weather Trends