An Ozone Action Day, which can be declared by a local municipality, county or state, is observed at certain times during the summer months, when weather conditions (such as heat, humidity, and air stagnation) run the risk of causing health problems.
Ozone Action Days, alternately called an "Ozone Alert" or a "Clean Air Alert", primarily center in the midwestern portion of the United States; particularly in well-urbanized areas such as Chicago, Cleveland, Detroit, and Indianapolis.
Read more about Ozone Action Day: Surface Ozone Vs. The Ozone Layer, Sources of Ground Ozone, Notification, What Can Be Done
Famous quotes containing the words action and/or day:
“The beginning, middle, and end of the birth, growth, and perfection of whatever we behold is from contraries, by contraries, and to contraries; and whatever contrarity is, there is action and reaction, there is motion, diversity, multitude, and order, there are degrees, succession and vicissitude.”
—Giordano Bruno (1548–1600)
“If you don’t appear
at all one day they think you’re lazy
or dead.”
—Frank O’Hara (1926–1966)