Guide
0-50 = Good Air quality is considered satisfactory
50-100 = Moderate Air quality is acceptable
100-150 = Unhealthy for Sensitive Groups
150-200 = Unhealthy Everyone may begin to
experience health effects
200-300 = Very Unhealthy Health warnings of
emergency conditions.
300+ = Hazardous Health alert !

Guide
Nitro D = no2(nitrogen dioxide) Values are converted from µg/m3 to AQI levels using the EPA standard.
Sulfur Dioxide = so2 (Sulfur Dioxide Air Values are converted from µg/m3 to AQI levels using the EPA standard.