Ozone levels are expected to be in the unhealthy for sensitive groups range Tuesday, according to the Indiana Department of Environmental Management.
The Air Quality Action Day for ozone includes Lake, Porter and LaPorte counties.
Active children and adults — and people with respiratory diseases such as asthma — should limit prolonged outdoor activity. The forecasts are based on air quality readings and weather patterns recorded by state and federal meteorologists, IDEM reported.
The highest levels of ground-level ozone in the state are from mid-May to mid-September, according to IDEM. For more information or to check the daily index, go to www.in.gov/apps/idem/smog/ or the Environmental Protection Agency AIRNow website at www.airnow.gov/.