Hourly Weather | Today Wednesday, March 18, 2026
Hammond, Indiana
5 AM
Snowy Weather
25°
Feels Like
53
Frost Risk: 61%
Humidity: 81%
UV Index: 0
Wind: 16 mph
6 AM
Cloudy Weather
25°
Feels Like
49
Frost Risk: 61%
Humidity: 81%
UV Index: 0
Wind: 16 mph
7 AM
Snowy Weather
27°
Feels Like
60
Humidity: 83%
UV Index: 0
Wind: 15 mph
8 AM
Snowy Weather
25°
Feels Like
61
Frost Risk: 74%
Humidity: 83%
UV Index: 0
Wind: 15 mph
9 AM
Cloudy Weather
27°
Feels Like 10°
46
Humidity: 84%
UV Index: 1
Wind: 16 mph
10 AM
Snowy Weather
28°
Feels Like 12°
61
Humidity: 81%
UV Index: 1
Wind: 16 mph
11 AM
Cloudy Weather
30°
Feels Like 18°
40
Humidity: 75%
UV Index: 1
Wind: 16 mph
12 PM
Cloudy Weather
34°
Feels Like 21°
34
Humidity: 69%
UV Index: 2
Wind: 17 mph
1 PM
Cloudy Weather
37°
Feels Like 27°
27
Humidity: 67%
UV Index: 2
Wind: 16 mph
2 PM
Cloudy Weather
39°
Feels Like 34°
15
Humidity: 64%
UV Index: 3
Wind: 13 mph
3 PM
Cloudy Weather
43°
Feels Like 37°
15
Humidity: 62%
UV Index: 3
Wind: 10 mph
4 PM
Cloudy Weather
43°
Feels Like 39°
15
Humidity: 63%
UV Index: 2
Wind: 9 mph
5 PM
Cloudy Weather
45°
Feels Like 41°
15
Humidity: 62%
UV Index: 1
Wind: 8 mph
6 PM
Cloudy Weather
41°
Feels Like 37°
15
Humidity: 71%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
39°
Feels Like 36°
10
Humidity: 77%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Weather
37°
Feels Like 34°
0
Humidity: 83%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Weather
36°
Feels Like 32°
0
Humidity: 89%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Weather
34°
Feels Like 30°
0
Humidity: 91%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
34°
Feels Like 30°
0
Humidity: 92%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.37 µg/m³
  • PM10: 3.52 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.57 µg/m³
  • PM10: 3.79 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.4 ppb
  • SO2: 1.1 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: 3.93 µg/m³
  • PM10: 4.29 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.4 ppb
  • SO2: 1.3 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: 4.37 µg/m³
  • PM10: 4.9 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.7 ppb
  • SO2: 1.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.7 µg/m³
  • PM10: 5.39 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.5 ppb
  • SO2: 1.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.99 µg/m³
  • PM10: 5.75 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.5 ppb
  • SO2: 1.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.21 µg/m³
  • PM10: 5.94 µg/m³
  • O3: 0.049 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.

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

Pollutant Concentrations:

  • PM2.5: 5.65 µg/m³
  • PM10: 6.3 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.6 ppb
  • SO2: 1 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: 6.55 µg/m³
  • PM10: 7.14 µg/m³
  • O3: 0.052 ppm
  • NO2: 1.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

2 PM
59 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.79 µg/m³
  • PM10: 8.43 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.8 ppb
  • SO2: 0.6 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.

3 PM
68 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.71 µg/m³
  • PM10: 9.41 µg/m³
  • O3: 0.060 ppm
  • NO2: 0.6 ppb
  • SO2: 0.6 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.

4 PM
73 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.44 µg/m³
  • PM10: 10.21 µg/m³
  • O3: 0.061 ppm
  • NO2: 0.6 ppb
  • SO2: 0.7 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.

5 PM
66 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.72 µg/m³
  • PM10: 10.61 µg/m³
  • O3: 0.059 ppm
  • NO2: 1.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.36 µg/m³
  • PM10: 11.41 µg/m³
  • O3: 0.052 ppm
  • NO2: 3.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 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: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.22 µg/m³
  • PM10: 12.48 µg/m³
  • O3: 0.045 ppm
  • NO2: 6.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

8 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.49 µg/m³
  • PM10: 13.97 µg/m³
  • O3: 0.040 ppm
  • NO2: 7.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

9 PM
54 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.92 µg/m³
  • PM10: 15.6 µg/m³
  • O3: 0.037 ppm
  • NO2: 8.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

10 PM
57 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.45 µg/m³
  • PM10: 17.27 µg/m³
  • O3: 0.035 ppm
  • NO2: 8.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

11 PM
59 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.37 µg/m³
  • PM10: 18.24 µg/m³
  • O3: 0.032 ppm
  • NO2: 7.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.23 ppm

Health Recommendations:

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