What is knozone?

Knozone is an initiative to make Indianapolis one of the Midwest’s most sustainable, livable cities. Through education, resources and tips for taking action, Knozone works with residents and businesses to improve Indianapolis’ air quality, making our city a great place to live, work and visit.

Today’s air quality

Here are the current conditions for the city of Indianapolis.

Current Conditions for Air Quality Index (AQI)

Ozone

PM2.5

  • Good air quality

    Good (0-50)

    Poses no risk to the public. Enjoy outdoor activities as normal.

    ×
    Good
  • Moderate air quality

    Moderate (51-100)

    Poses a small risk to unusually sensitive people. Unusually sensitive population should reduce strenuous outdoor activities.

    ×
    Moderate
  • Unhealthy for Sensitive Groups air quality

    Unhealthy for Sensitive Groups (101-150)

    Poses risks to people sensitive to air pollution, such as those with heart or lung disease (including asthma), older adults, active adults and children. Sensitive groups should cut back or reschedule strenuous outdoor activities.

    ×
    Unhealthy for Sensitive Groups
  • Unhealthy air quality

    Unhealthy (151-200)

    Poses risks to everyone, especially people sensitive to air pollution, such as those with heart or lung disease (including asthma), older adults, active adults and children. It is advised to reduce strenuous activities; sensitive groups should avoid or reschedule.

    ×
    Unhealthy
  • Very Unhealthy air quality

    Very Unhealthy (201-300)

    Poses serious risks to everyone, especially people sensitive to air pollution, such as those with heart or lung disease (including asthma), older adults, active adults and children. It is advised for everyone to avoid prolonged outdoor activities; sensitive groups should avoid all outdoor activities.

    ×
    Very Unhealthy
  • Hazardous air quality

    Hazardous (301-500)

    Poses serious risks to everyone. Everyone is advised to avoid all outdoor activities; sensitive groups should remain indoors and keep activity levels low.

    ×
    Hazardous

Action Days

Ozone and fine particulate levels in the air are high today. Limit the time you spend outside and participate in the Here's How You Can Help section below.

Approximately 45% of ozone causing pollution is produced by

motor vehicles

Only 12% can be attributed to power plants and large factories

Click here to view the IDEM report

Learn How You Can Help

#KNOZONE

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