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KNozone Action Day


(n) Knozone Action Day has been declared for Indianapolis, IN, on Thursday, Aug 30
Today and Tomorrow's Forecast
Wednesday, Aug 29:   Moderate Ozone
Thursday, Aug 30: 103 AQI Unhealthy for Sensitive Groups Ozone

Wednesday : PM2.5 readings are in the upper good range, despite some haze buildup. Ozone was in the upper 60’s in portions of the forecast area. High pressure over the Great Lakes will move off to the mid-Atlantic coast Thursday. Winds will turn to the east, then south while humidity remains fairly low. Most of the solar heating will go into raising the temperature into the low 90’s. As hurricane Isaac moves into Louisiana then Arkansas, his circulation will tend to reinforce high pressure locally. The 500mb level ridge is centered over northern Indiana tomorrow.


Take action to protect your health!

During a Knozone Air Quality Action Day, the region’s air quality may become unhealthy for individuals who are sensitive to air pollutants, including:

o Children
o Senior citizens
o People with breathing-related illnesses, such as asthma
o Those who are active outdoors

The Indianapolis Office of Sustainability encourages sensitive groups to reduce prolonged or heavy exertion outdoors on Knozone Air Quality Action Days.

People who have any concerns about how air pollution affects their health should seek the advice of a physician.

Everyone has a role in improving Indianapolis’ air quality, not only on Knozone Air Quality Action Days, but all year long. Learn how you can help at or call (317) 327-4AIR.


Do not reply directly to this email. If you want more information on the air quality forecast, or other aspects of the local air quality program, please contact your local air quality agency using the information above. For more information on the U.S. EPA's AIRNow Program, visit





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