Ozone (O3) is present in low concentrations throughout the Earth’s atmosphere. It is a triatomic molecule, consisting of three oxygen atoms and is much less stable than the oxygen (O2). Ozone in the lower atmosphere is an air pollutant with harmful effects; however, the ozone layer in the upper atmosphere is beneficial. It prevents potentially damaging ultraviolet light from reaching the Earth’s surface.
According to air quality guidelines from the World Health Organization – exposure to ozone and the pollutants can cause premature death, asthma, bronchitis, heart attack, and other cardiopulmonary problems. According to scientists with the United States Environmental Protection Agency (EPA), susceptible people can be adversely affected by ozone levels as low as 40 ppb.
Recently various States issued Air quality alerts.
OHIO- The Mid-Ohio Regional Planning Commission (MORPC) is issuing Air Quality Alerts for today. The affected region is Delaware, Fairfield, Franklin, Knox, Madison and Licking counties. These counties are likely to experience ozone pollution levels that are unhealthy for sensitive groups on the national Air Quality Index scale. The forecast for Monday is 110 AQI. The AQI scale runs from 0...
to 300 — the higher the AQI value, the greater the health concern. When levels reach above 100, air quality is considered to be unhealthy for sensitive groups, which includes people with respiratory and heart disease, children and older adults.
North Carolina – The N.C. Division of Air Quality has called Monday through Wednesday Air Quality Action days for Wake, Durham, Franklin, Granville, Johnston, Orange, Person, Vance and Chatham counties. An “orange” level has been assigned for Orange County, indicating unhealthy air for those with heart or respiratory issues as well as children and active adults
Health experts advised to avoid the exposure of ozone. You can use mass transportation or carpool to reduce auto emissions, plan mowing the lawn in the evening, when temperature is low.