Hourly Weather | Today Wednesday, March 18, 2026
Active Weather Warnings
Noblesville, Indiana
6 AM
Snowy Weather
23°
Feels Like 10°
44
Humidity: 68%
UV Index: 0
Wind: 10 mph
7 AM
Snowy Weather
25°
Feels Like 10°
48
Humidity: 70%
UV Index: 0
Wind: 12 mph
8 AM
Snowy Weather
25°
Feels Like 10°
43
Humidity: 76%
UV Index: 0
Wind: 12 mph
9 AM
Cloudy Weather
25°
Feels Like 10°
40
Humidity: 79%
UV Index: 1
Wind: 13 mph
10 AM
Cloudy Weather
27°
Feels Like 12°
37
Humidity: 78%
UV Index: 1
Wind: 14 mph
11 AM
Cloudy Weather
27°
Feels Like 14°
37
Humidity: 79%
UV Index: 1
Wind: 15 mph
12 PM
Cloudy Weather
30°
Feels Like 18°
40
Humidity: 76%
UV Index: 1
Wind: 15 mph
1 PM
Snowy Weather
32°
Feels Like 19°
44
Humidity: 73%
UV Index: 1
Wind: 15 mph
2 PM
Cloudy Weather
36°
Feels Like 25°
25
Humidity: 69%
UV Index: 2
Wind: 15 mph
3 PM
Cloudy Weather
37°
Feels Like 28°
20
Humidity: 65%
UV Index: 2
Wind: 15 mph
4 PM
Cloudy Weather
39°
Feels Like 32°
20
Humidity: 63%
UV Index: 2
Wind: 14 mph
5 PM
Cloudy Weather
41°
Feels Like 34°
20
Humidity: 64%
UV Index: 1
Wind: 14 mph
6 PM
Cloudy Weather
43°
Feels Like 34°
20
Humidity: 64%
UV Index: 1
Wind: 12 mph
7 PM
Cloudy Weather
39°
Feels Like 34°
13
Humidity: 72%
UV Index: 0
Wind: 9 mph
8 PM
Cloudy Weather
37°
Feels Like 34°
0
Humidity: 79%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Weather
36°
Feels Like 32°
0
Humidity: 84%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Weather
34°
Feels Like 30°
0
Humidity: 87%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
34°
Feels Like 30°
0
Humidity: 90%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.32 µg/m³
  • PM10: 5.17 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.9 ppb
  • SO2: 2.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

7 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.86 µg/m³
  • PM10: 5.67 µg/m³
  • O3: 0.050 ppm
  • NO2: 2 ppb
  • SO2: 3.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

8 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.26 µg/m³
  • PM10: 5.93 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.1 ppb
  • SO2: 3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.29 µg/m³
  • PM10: 5.9 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.3 ppb
  • SO2: 2.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

10 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.91 µg/m³
  • PM10: 5.52 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.7 ppb
  • SO2: 2.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

11 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.33 µg/m³
  • PM10: 4.95 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.6 ppb
  • SO2: 1.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.93 µg/m³
  • PM10: 4.59 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.3 ppb
  • SO2: 1.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.85 µg/m³
  • PM10: 4.64 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.2 ppb
  • SO2: 1.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.17 µg/m³
  • PM10: 5.11 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.1 ppb
  • SO2: 1.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.69 µg/m³
  • PM10: 5.75 µg/m³
  • O3: 0.053 ppm
  • NO2: 2 ppb
  • SO2: 1.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

4 PM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.25 µg/m³
  • PM10: 6.32 µg/m³
  • O3: 0.053 ppm
  • NO2: 1.8 ppb
  • SO2: 1.9 ppb
  • CO: 0.14 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:

  • PM2.5: 5.58 µg/m³
  • PM10: 6.61 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.6 ppb
  • SO2: 1.8 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

6 PM
53 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.64 µg/m³
  • PM10: 6.61 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.6 ppb
  • SO2: 1.7 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 PM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.36 µg/m³
  • PM10: 6.29 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.2 ppb
  • SO2: 1.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

8 PM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.22 µg/m³
  • PM10: 6.13 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.7 ppb
  • SO2: 1.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

9 PM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.22 µg/m³
  • PM10: 6.13 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.7 ppb
  • SO2: 1.1 ppb
  • CO: 0.15 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.47 µg/m³
  • PM10: 6.39 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.6 ppb
  • SO2: 1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.8 µg/m³
  • PM10: 6.75 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Noblesville

Moderate Expected Observed

Special Weather Statement

Special Weather Statement issued March 17 at 9:33PM EDT by NWS Indianapolis IN
Mar 17, 9:33 PM Mar 18, 5:45 AM
Light snow will develop after midnight in western portions of
central Indiana reaching the remainder of central Indiana in the
pre-dawn hours of Wednesday morning.

The snow will continue into the morning rush hour before gradually
ending by noon. If traveling, exercise caution and be prepared
for slick spots on roads; especially bridges, overpasses, and
untreated surfaces.

Total snow accumulations from a few tenths up to 1 inch are
expected, with the highest amounts expected generally north of
I-70.
Updated: Mar 18, 5:32 AM Source: NWS Alert