If you live in Southeast, Southcentral or Southwest Pennsylvania, you'll soon see something new when watching your local weather forecasts. Beginning this month, daily ozone forecasts will be issued to inform people about unhealthy levels of summertime air pollution.
RED represents ozone levels that are unhealthy for everyone.
Ozone forms when volatile organic compounds and nitrogen oxides emitted by cars, businesses, machinery, paints and solvents react with sunlight. Hot stagnant summertime weather can make ozone worse. On code red or ozone action days, people are asked to limit their driving and use mass transit. Don't top of your gas tank and put off mowing your yard. With another Pennsylvania Earth Minute , I m Susan Rickens.