TULSA, OKLAHOMA -- Thursday, August 19 has been designated an Ozone Alert Day for the Tulsa area by the Oklahoma Department of Environmental Quality.
This is the third Ozone Alert Day so far this year.
The DEQ says persons with lung or heart disease should be aware that increased pollution may cause them to experience adverse health effects.
Ozone affects people differently.
Symptoms include chest pain, coughing, sneezing, nausea, headache and pulmonary congestion. Active children, adults and especially people with respiratory disease such as asthma should limit prolonged outdoor exertion.
Ozone is formed when the gas nitrogen oxide combines with chemicals called volatile organic compounds. Hot and windless days usually create the perfect conditions for an Ozone Alert Day.