Your Local Air Quality
For North Billerica, MA 01862
Date
Code
AQI Level
Major Pollutant
11/20/2009
10:00 PM
15
Small Particulate Matter
Date
Code
AQI Level
Major Pollutant
11/20/2009
37
Small Particulate Matter
11/20/2009
24
Ozone
11/20/2009
37
Small Particulate Matter
11/21/2009
24
Ozone
11/21/2009
37
Small Particulate Matter
| Air Quality Index (AQI) Scale | ||
| AQI Color | AQI Category | AQI Numbers |
| Good | 0-50 | |
| Moderate | 51-100 | |
| Unhealthy for Sensitive Groups | 101-150 | |
| Unhealthy | 151-200 | |
| Very Unhealthy | 201-300 | |
| Hazardous | 301-500+ | |
