Hourly Weather | Today Tuesday, July 21, 2026
Noblesville, Indiana
5 AM
Cloudy Night
73°
Feels Like 75°
43
Humidity: 89%
UV Index: 0
Wind: 8 mph
6 AM
Stormy Weather
73°
Feels Like 72°
51
Humidity: 90%
UV Index: 0
Wind: 8 mph
7 AM
Cloudy Weather
73°
Feels Like 77°
47
Humidity: 92%
UV Index: 0
Wind: 8 mph
8 AM
Sunny with a Chance of Thunderstorms
73°
Feels Like 73°
75
Humidity: 92%
UV Index: 1
Wind: 8 mph
9 AM
Sunny with a Chance of Thunderstorms
75°
Feels Like 75°
75
Humidity: 92%
UV Index: 1
Wind: 8 mph
10 AM
Cloudy Weather
75°
Feels Like 84°
49
Humidity: 89%
UV Index: 2
Wind: 9 mph
11 AM
Cloudy Weather
79°
Feels Like 86°
34
Humidity: 86%
UV Index: 4
Wind: 10 mph
12 PM
Cloudy Weather
81°
Feels Like 90°
34
Humidity: 79%
UV Index: 5
Wind: 12 mph
1 PM
Cloudy Weather
82°
Feels Like 91°
37
Humidity: 71%
UV Index: 6
Wind: 13 mph
2 PM
Cloudy Weather
84°
Feels Like 93°
43
Humidity: 64%
UV Index: 5
Wind: 13 mph
3 PM
Cloudy Weather
86°
Feels Like 91°
47
Humidity: 61%
UV Index: 4
Wind: 13 mph
4 PM
Partly Sunny with Showers
88°
Feels Like 88°
51
Humidity: 57%
UV Index: 2
Wind: 14 mph
5 PM
Cloudy Weather
86°
Feels Like 90°
40
Humidity: 58%
UV Index: 2
Wind: 14 mph
6 PM
Cloudy Weather
84°
Feels Like 88°
34
Humidity: 60%
UV Index: 2
Wind: 13 mph
7 PM
Cloudy Weather
82°
Feels Like 84°
23
Humidity: 64%
UV Index: 1
Wind: 12 mph
8 PM
Cloudy Weather
81°
Feels Like 81°
1
Humidity: 69%
UV Index: 0
Wind: 10 mph
9 PM
Cloudy Weather
77°
Feels Like 79°
1
Humidity: 74%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
73°
Feels Like 75°
1
Humidity: 81%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
72°
Feels Like 73°
1
Humidity: 88%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 AM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.67 µg/m³
  • PM10: 16.08 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

6 AM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.48 µg/m³
  • PM10: 13.81 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

7 AM
48 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.57 µg/m³
  • PM10: 11.78 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.4 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 AM
42 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.03 µg/m³
  • PM10: 10.18 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

9 AM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.43 µg/m³
  • PM10: 8.54 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

10 AM
29 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.86 µg/m³
  • PM10: 6.96 µg/m³
  • O3: 0.021 ppm
  • NO2: 1.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

11 AM
24 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.73 µg/m³
  • PM10: 5.82 µg/m³
  • O3: 0.021 ppm
  • NO2: 1.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

12 PM
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.71 µg/m³
  • PM10: 4.8 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.9 ppb
  • SO2: 0.7 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

1 PM
19 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.37 µg/m³
  • PM10: 4.47 µg/m³
  • O3: 0.021 ppm
  • NO2: 1.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

2 PM
19 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.42 µg/m³
  • PM10: 4.53 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

3 PM
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.88 µg/m³
  • PM10: 5 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

4 PM
25 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.11 µg/m³
  • PM10: 6.24 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

5 PM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.7 µg/m³
  • PM10: 7.85 µg/m³
  • O3: 0.030 ppm
  • NO2: 0.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

6 PM
36 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.71 µg/m³
  • PM10: 8.88 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.7 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
37 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.8 µg/m³
  • PM10: 8.98 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

8 PM
34 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.24 µg/m³
  • PM10: 8.42 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

9 PM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.43 µg/m³
  • PM10: 7.61 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

10 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.72 µg/m³
  • PM10: 6.9 µg/m³
  • O3: 0.031 ppm
  • NO2: 1.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

11 PM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.08 µg/m³
  • PM10: 6.26 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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