Hourly Weather Forecast for Lafayette, Louisiana

Hourly Weather | Today › Tuesday, July 21, 2026

Active Weather Warnings

Heat Advisory

Lafayette, Louisiana

3 AM

81°

Feels Like 91°

Humidity: 90%

UV Index: 0

Wind: 6 mph

4 AM

79°

Feels Like 90°

Humidity: 92%

UV Index: 0

Wind: 6 mph

5 AM

79°

Feels Like 88°

Humidity: 93%

UV Index: 0

Wind: 6 mph

6 AM

79°

Feels Like 88°

Humidity: 94%

UV Index: 0

Wind: 6 mph

7 AM

79°

Feels Like 90°

Humidity: 89%

UV Index: 1

Wind: 5 mph

8 AM

82°

Feels Like 93°

Humidity: 83%

UV Index: 2

Wind: 7 mph

9 AM

84°

Feels Like 99°

Humidity: 76%

UV Index: 3

Wind: 7 mph

10 AM

88°

Feels Like 100°

Humidity: 69%

UV Index: 5

Wind: 8 mph

11 AM

91°

Feels Like 106°

Humidity: 62%

UV Index: 8

Wind: 8 mph

12 PM

93°

Feels Like 108°

Humidity: 57%

UV Index: 11

Wind: 8 mph

1 PM

93°

Feels Like 109°

Humidity: 55%

UV Index: 11

Wind: 8 mph

2 PM

95°

Feels Like 109°

Humidity: 52%

UV Index: 11

Wind: 9 mph

3 PM

95°

Feels Like 108°

Humidity: 53%

UV Index: 7

Wind: 9 mph

4 PM

93°

Feels Like 106°

Humidity: 55%

UV Index: 5

Wind: 9 mph

5 PM

93°

Feels Like 106°

Humidity: 56%

UV Index: 3

Wind: 9 mph

6 PM

93°

Feels Like 104°

Humidity: 59%

UV Index: 2

Wind: 8 mph

7 PM

91°

Feels Like 102°

Humidity: 63%

UV Index: 1

Wind: 8 mph

8 PM

90°

Feels Like 100°

Humidity: 68%

UV Index: 0

Wind: 6 mph

9 PM

88°

Feels Like 100°

Humidity: 72%

UV Index: 0

Wind: 6 mph

10 PM

84°

Feels Like 97°

Humidity: 79%

UV Index: 0

Wind: 6 mph

11 PM

84°

Feels Like 95°

Humidity: 83%

UV Index: 0

Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 AM

23 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.18 µg/m³
PM₁₀: 9.63 µg/m³
O₃: 0.024 ppm
NO₂: 0.3 ppb
SO₂: 0.2 ppb
CO: 0.07 ppm

Health Recommendations:

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

4 AM

22 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.29 µg/m³
PM₁₀: 9.83 µg/m³
O₃: 0.023 ppm
NO₂: 0.4 ppb
SO₂: 0.3 ppb
CO: 0.08 ppm

Health Recommendations:

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

5 AM

21 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.48 µg/m³
PM₁₀: 10.03 µg/m³
O₃: 0.022 ppm
NO₂: 0.6 ppb
SO₂: 0.4 ppb
CO: 0.08 ppm

Health Recommendations:

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

6 AM

19 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.72 µg/m³
PM₁₀: 10.28 µg/m³
O₃: 0.021 ppm
NO₂: 1 ppb
SO₂: 0.6 ppb
CO: 0.08 ppm

Health Recommendations:

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

7 AM

18 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4 µg/m³
PM₁₀: 10.5 µg/m³
O₃: 0.019 ppm
NO₂: 1.5 ppb
SO₂: 0.8 ppb
CO: 0.08 ppm

Health Recommendations:

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

8 AM

18 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 4.31 µg/m³
PM₁₀: 10.63 µg/m³
O₃: 0.018 ppm
NO₂: 1.9 ppb
SO₂: 0.9 ppb
CO: 0.08 ppm

Health Recommendations:

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

9 AM

19 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 4.57 µg/m³
PM₁₀: 10.56 µg/m³
O₃: 0.019 ppm
NO₂: 2 ppb
SO₂: 1.1 ppb
CO: 0.08 ppm

Health Recommendations:

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

10 AM

20 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 4.84 µg/m³
PM₁₀: 10.45 µg/m³
O₃: 0.021 ppm
NO₂: 2 ppb
SO₂: 1.1 ppb
CO: 0.08 ppm

Health Recommendations:

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

11 AM

26 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.62 µg/m³
PM₁₀: 10.98 µg/m³
O₃: 0.028 ppm
NO₂: 1.7 ppb
SO₂: 1.1 ppb
CO: 0.09 ppm

Health Recommendations:

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

12 PM

35 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 7.49 µg/m³
PM₁₀: 12.87 µg/m³
O₃: 0.038 ppm
NO₂: 1 ppb
SO₂: 1.1 ppb
CO: 0.09 ppm

Health Recommendations:

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

1 PM

42 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 9.02 µg/m³
PM₁₀: 14.51 µg/m³
O₃: 0.046 ppm
NO₂: 0.6 ppb
SO₂: 1 ppb
CO: 0.09 ppm

Health Recommendations:

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

2 PM

46 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 9.73 µg/m³
PM₁₀: 15.33 µg/m³
O₃: 0.050 ppm
NO₂: 0.4 ppb
SO₂: 0.9 ppb
CO: 0.09 ppm

Health Recommendations:

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

3 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 10.15 µg/m³
PM₁₀: 15.92 µg/m³
O₃: 0.051 ppm
NO₂: 0.4 ppb
SO₂: 0.9 ppb
CO: 0.09 ppm

Health Recommendations:

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

4 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 10.62 µg/m³
PM₁₀: 16.7 µg/m³
O₃: 0.052 ppm
NO₂: 0.4 ppb
SO₂: 0.8 ppb
CO: 0.09 ppm

Health Recommendations:

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

5 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 11.11 µg/m³
PM₁₀: 17.74 µg/m³
O₃: 0.052 ppm
NO₂: 0.4 ppb
SO₂: 0.8 ppb
CO: 0.09 ppm

Health Recommendations:

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

6 PM

48 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 11.22 µg/m³
PM₁₀: 18.59 µg/m³
O₃: 0.052 ppm
NO₂: 0.4 ppb
SO₂: 0.8 ppb
CO: 0.09 ppm

Health Recommendations:

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

7 PM

46 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 10.57 µg/m³
PM₁₀: 18.75 µg/m³
O₃: 0.049 ppm
NO₂: 0.4 ppb
SO₂: 0.7 ppb
CO: 0.09 ppm

Health Recommendations:

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

8 PM

43 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 9.36 µg/m³
PM₁₀: 18.08 µg/m³
O₃: 0.046 ppm
NO₂: 0.4 ppb
SO₂: 0.6 ppb
CO: 0.09 ppm

Health Recommendations:

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

9 PM

39 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 7.95 µg/m³
PM₁₀: 16.82 µg/m³
O₃: 0.043 ppm
NO₂: 0.4 ppb
SO₂: 0.5 ppb
CO: 0.08 ppm

Health Recommendations:

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

10 PM

36 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 6.55 µg/m³
PM₁₀: 15.28 µg/m³
O₃: 0.039 ppm
NO₂: 0.3 ppb
SO₂: 0.4 ppb
CO: 0.08 ppm

Health Recommendations:

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

11 PM

33 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 5.33 µg/m³
PM₁₀: 13.79 µg/m³
O₃: 0.035 ppm
NO₂: 0.3 ppb
SO₂: 0.3 ppb
CO: 0.08 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 July 21 at 1:00AM CDT until July 21 at 7:00PM CDT by NWS Lake Charles LA

Jul 21, 12:00 PM → Jul 21, 7:00 PM

WHAT: Heat index values up to 111 expected.

WHERE: Portions of central, south central, southwest, and west
central Louisiana and southeast Texas.

WHEN: From noon today to 7 PM CDT this evening.

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

+ Read More

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Monitor the latest forecasts and warnings for updates.

Updated: Jul 21, 1:46 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Lafayette

Heat Advisory

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