Air Quality Index Range
Good
AQI: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk
Satisfactory
AQI: Satisfactory (51 - 100)
Air quality is considered satisfactory, and air pollution poses little or no risk
Moderate
AQI: Moderate (101 - 200)
Air quality is acceptable; however, for some pollutants
there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution
Poor
AQI: Poor for Sensitive Groups (201 - 300)
Although general public is not likely to be affected at this AQI range,
people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and
children are at greater risk from the presence of particles in the air
Very Poor
AQI: Very Poor (301 - 400)
Health alert: everyone may experience more serious health effects
Severe
AQI: Severe (401 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected