July 8, 2011 at 6:15 PM EST - Updated June 24 at 3:53 PM
The Hamilton County Department of Environmental Services issued a smog alert for Sunday, July 10 and Monday, July 11for Butler, Clermont, Hamilton and Warren counties in Ohio and Boone, Campbell and Kenton counties in Kentucky. The smog alert has been extended and now includes Tuesday, July 12.
HCDOES expects to see levels of particulate matter in the "unhealthy for sensitive groups" range on the Air Quality Index.
Smog is a term used to describe air pollution that is a result of the interaction of sunlight with certain chemicals in the atmosphere. The two primary pollutants in smog are ground-level ozone (O3) and particulate matter (PM).
These pollutants come from a variety of sources, including:
Automobiles, trucks and buses
Large industry and combustion sources such as utilities
Small industry such as gasoline dispensing facilities and print shops
Consumer products such as paints and cleaners
Off-road engines such as aircraft, locomotives, construction equipment and lawn and garden equipment
Every resident in the affected area is asked to make a small change in his or her daily habits on Smog Alert days to reduce smog formation, such as:
Taking the bus (METRO: 513-621-4455 or TANK: 859-331-8265)
Carpooling or vanpooling (RideShare: 241-RIDE)
Riding a bike or rollerblading instead of driving.
Avoiding use of gasoline powered lawn equipment.
Keeping your vehicle maintained.
Combining trips or eliminating unnecessary vehicle trips.