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With the weather heating up in the Blue Water Area we may see more Ozone Action Days. What goes into determining an ozone action day is the job of the Michigan Department of Environmental Quality. Officials at the Michigan DEQ take into account several different factors when determining the severity and nature of an ozone action day. Specific parameters play a significant role. Solar insolation, cloud cover, temperature, wind speed and direction, and the presence or absence of precipitation. Emission factors also contribute. Emissions, though, are not measured on a continuous basis as ambient ozone monitor concentrations are. Emission information is taken into consideration upon general knowledge and historic data. Activities that affect emission data to name a few are; refueling or topping off vehicles, using gas-powered lawn equipment even using charcoal lighter fluid. Activities that can have a positive impact on air quality are car pooling, biking to work, delaying or combining errands and using water based paints. For further information visit deqmiair.org