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Ozone Cautionary Table

         OZONE CAUTIONARY STATEMENT GUIDE

Air Quality
Index
Cautionary Statements Health Effects Statements
Air Quality Index (AQI)
Ozone Concentration
(parts per million) 
Good No health impacts are expected when air quality is in this range. No health effects are expected when air quality is in this range. 0 to 50 0.0 to 0.064
Moderate Unusually sensitive people should consider limiting prolonged outdoor exertion. Unusually sensitive individuals may experience respiratory symptoms. 51 to 100 0.065 to 0.084
Unhealthy for Sensitive Groups Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion. Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with respiratory disease, such as asthma. 101 to 150 0.085 to 0.104
Unhealthy Active children and adults, and people with respiratory disease, such as asthma, should avoid prolonged or heavy outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion. Greater likelihood of respiratory symptoms and breathing difficulty in active children and adults and people with respiratory disease, such as asthma; possible respiratory effects in general population. 151 to 200 0.105 to 0.124
[8-hr]
or
0.165 to 0.204
[1-hr]
Very Unhealthy 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. Increasingly severe symptoms and impaired breathing likely in active children and adults and people with respiratory disease, such as asthma; increasing likelihood of respiratory effects in general population. 201 to 300 0.125 to 0.374
[8-hr]
or
0.205 to 0.404
[1-hr]
Hazardous Everyone should avoid all outdoor exertion. Severe respiratory effects and impaired breathing likely in active children and adults and people with respiratory disease, such as asthma; increasingly severe respiratory effects in general population. 301 to 500 0.405 to 0.604
[1-hr]
Sensitive Groups:  When the Ozone AQI exceeds 100 the sensitive groups most at risk are  children and people with asthma.
 

 

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