AQI Health Effects

OZONE HEALTH EFFECTS GUIDE
Air Quality Index	Health Effects Statements	Air Quality Index (AQI) An AQI of 100 corresponds to EPA's air quality standard	Ozone Concentration (parts per million) 8-hour average unless noted
Good	No health effects are expected when air quality is in this range.	0 to 50	0.0 to 0.064
Moderate	Unusually sensitive individuals may experience respiratory symptoms.	51 to 100	0.065 to 0.084
Unhealthy for Sensitive Groups	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	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	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	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.

PM10 HEALTH EFFECTS GUIDE
Air Quality Index	Health Effects Statements	Air Quality Index (AQI) An AQI of 100 corresponds to EPA's air quality standard	PM10 Concentration (micrograms per cubic meter) 24-hour average unless noted
Good	No health effects are expected when air quality is in this range.	0 to 50	0 to 54
Moderate	No health effects are expected when air quality is in this range.	51 to 100	55 to 154
Unhealthy for Sensitive Groups	Increasing likelihood of respiratory symptoms and aggravation of lung disease, such as asthma.	101 to 150	155 to 254
Unhealthy	Increased respiratory symptoms and aggravation of lung disease, such as asthma; possible respiratory effects in general population.	151 to 200	255 to 354
Very Unhealthy	Significant increase in respiratory symptoms and aggravation of lung disease, such as asthma; increasing likelihood of respiratory effects in general population.	201 to 300	355 to 424
Hazardous	Serious risk of respiratory symptoms and aggravation of lung disease, such as asthma; respiratory effects likely in general population..	301 to 500	425 to 604
Sensitive Groups: When the PM10 AQI exceeds 100 the sensitive groups most at risk are people with respiratory disease.