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The Air Quality table shows the 12-year average of the EPA's Air Quality Index, an approximate indicator of overall air pollution. The index is based on measurements of carbon monoxide, ozone and other pollutants.
The % Good/Moderate Days column is the percentage of days measured in your favorite retirement city or town that offered good to moderate air quality with the lowest level of pollutants.
The 11 cities with a Good/Moderate ratio of 100% have the best air quality of our 99+ top retirement cities.
|2001 - 2012|
|City/Town||Days||per Year||per Year||per Year||Rank|
|Santa Fe, NM||100%||357||0||0||1|
|Port Townsend, WA||100%||302||0||0||1|
|Hot Springs Village, AR||100%||153||0||0||1|
|Great Falls, MT||99.7%||359||1||0||12|
|Colorado Springs, CO||99.7%||358||1||0||12|
|Good/Moderate = Air quality is measured as good to moderate quality|
|Unhealthy for SensPerson = Air quality is measured as unhealthy for sensitive|
|Unhealthy/VU = Air quality is measured as unhealthy/very unhealthy for all|
|Total number of days measured per location is 365 or less.|
|GPTR Rank - Higher "% Good/Moderate Days" is better|
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