داده های کیفیت هوا ارائه شده توسط: the Massachusett Office of Energy and Environmental Affair (mass.gov) and Air Now - US EPA (airnow.gov)
Note that the measurements for O3 (ozone), NO2 (nitrogen dioxide), SO2 (sulfur dioxide) and CO (carbon monoxide) are taken from the station: USA:Massachusett/chicopee/westover Afb