South Carolina Ground-level Ozone Forecast
Due to the health effects of ground-level ozone, DHEC provides the service of forecasting ozone concentrations to warn the public of unhealthy air and to encourage people to avoid exposure to unhealthy air and voluntarily reduce emissions. DHEC may declare an Ozone Action Day when ozone levels are forecast to reach unhealthy levels. On ozone action days, you can take simple steps to reduce the pollution that results in the formation of ground-level ozone.
This webpage is updated each day of the Ground-level Ozone Forecasting Season (April 1 - September 30) by 4:00 p.m. EDT for the following day.
Ground-level Ozone Forecast for Thursday, May 17, 2012
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What do the Air Quality Index (AQI) colors mean?
| AQI Color Code (Value Range) |
Cautionary Statement |
|---|---|
| Good (0-50) | No health effects are expected. |
| Moderate (51-100) | Unusually sensitive people should consider limiting prolonged outdoor exertion. |
| Unhealthy for Sensitive Groups (101-150) | Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion. |
| Unhealthy (151-200) | Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion. |
| Very Unhealthy (200+) | Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion. |
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For more information please contact the Bureau of Air Quality at (803) 898-4123 or by email.