Hourly Weather Forecast for Greenwood, Indiana

Hourly Weather | Today › Tuesday, September 1, 2026

Active Weather Warnings

Heat Advisory

Greenwood, Indiana

12 PM

84°

Feels Like 93°

Humidity: 61%

UV Index: 6

Wind: 9 mph

1 PM

88°

Feels Like 99°

Humidity: 59%

UV Index: 7

Wind: 10 mph

2 PM

90°

Feels Like 100°

Humidity: 55%

UV Index: 6

Wind: 10 mph

3 PM

93°

Feels Like 100°

Humidity: 51%

UV Index: 5

Wind: 9 mph

4 PM

95°

Feels Like 102°

Humidity: 48%

UV Index: 4

Wind: 9 mph

5 PM

93°

Feels Like 100°

Humidity: 50%

UV Index: 2

Wind: 9 mph

6 PM

91°

Feels Like 97°

Humidity: 54%

UV Index: 1

Wind: 8 mph

7 PM

90°

Feels Like 95°

Humidity: 58%

UV Index: 0

Wind: 7 mph

8 PM

86°

Feels Like 91°

Humidity: 67%

UV Index: 0

Wind: 6 mph

9 PM

82°

Feels Like 90°

Humidity: 74%

UV Index: 0

Wind: 6 mph

10 PM

81°

Feels Like 86°

Humidity: 79%

UV Index: 0

Wind: 6 mph

11 PM

79°

Feels Like 82°

Humidity: 83%

UV Index: 0

Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

12 PM

40 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 7.77 µg/m³
PM₁₀: 8.52 µg/m³
O₃: 0.043 ppm
NO₂: 1 ppb
SO₂: 1.5 ppb
CO: 0.12 ppm

Health Recommendations:

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

1 PM

46 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 9.11 µg/m³
PM₁₀: 9.82 µg/m³
O₃: 0.050 ppm
NO₂: 0.8 ppb
SO₂: 1.7 ppb
CO: 0.12 ppm

Health Recommendations:

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

2 PM

50 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 10.29 µg/m³
PM₁₀: 10.99 µg/m³
O₃: 0.054 ppm
NO₂: 0.7 ppb
SO₂: 1.7 ppb
CO: 0.12 ppm

Health Recommendations:

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

3 PM

54 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 11.1 µg/m³
PM₁₀: 11.79 µg/m³
O₃: 0.055 ppm
NO₂: 0.7 ppb
SO₂: 1.4 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

50 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 11.29 µg/m³
PM₁₀: 11.97 µg/m³
O₃: 0.054 ppm
NO₂: 0.8 ppb
SO₂: 1.1 ppb
CO: 0.12 ppm

Health Recommendations:

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

5 PM

50 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 11.31 µg/m³
PM₁₀: 12 µg/m³
O₃: 0.054 ppm
NO₂: 1 ppb
SO₂: 0.9 ppb
CO: 0.12 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: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.49 µg/m³
PM₁₀: 12.23 µg/m³
O₃: 0.051 ppm
NO₂: 1.6 ppb
SO₂: 0.9 ppb
CO: 0.13 ppm

Health Recommendations:

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

7 PM

49 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.65 µg/m³
PM₁₀: 12.47 µg/m³
O₃: 0.045 ppm
NO₂: 2.2 ppb
SO₂: 0.8 ppb
CO: 0.13 ppm

Health Recommendations:

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

8 PM

49 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.64 µg/m³
PM₁₀: 12.54 µg/m³
O₃: 0.039 ppm
NO₂: 2.9 ppb
SO₂: 0.7 ppb
CO: 0.14 ppm

Health Recommendations:

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

9 PM

48 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.47 µg/m³
PM₁₀: 12.44 µg/m³
O₃: 0.035 ppm
NO₂: 3.1 ppb
SO₂: 0.6 ppb
CO: 0.14 ppm

Health Recommendations:

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

10 PM

47 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.36 µg/m³
PM₁₀: 12.37 µg/m³
O₃: 0.031 ppm
NO₂: 3 ppb
SO₂: 0.5 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: 11.15 µg/m³
PM₁₀: 12.19 µg/m³
O₃: 0.030 ppm
NO₂: 2.9 ppb
SO₂: 0.5 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 Greenwood

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, 10:52 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Greenwood

Heat Advisory

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