| Good |
1-50 |
< 54 μg/m3 |
< 12 μg/m3 |
Air quality is considered satisfactory, and air pollution poses little or no risk |
| Moderate |
51-100 |
< 154 μg/m3 |
< 35.4 μg/m3 |
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. |
| Unhealthy for Sensitive Groups |
101-150 |
< 254 μg/m3 |
< 55.4 μg/m3 |
Members of sensitive groups may experience health effects. The general public is not likely to be affected. |
| Unhealthy |
151-200 |
< 354 μg/m3 |
< 150.4 μg/m3 |
Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects. |
| Very Unhealthy |
201-300 |
< 424 μg/m3 |
< 250.4 μg/m3 |
Health warnings of emergency conditions. The entire population is more likely to be affected |
| Hazardous |
301-500 |
> 424 μg/m3 |
> 250.4 μg/m3 |
Health alert: everyone may experience more serious health effects |
| Visit these websites Regional Air Quality site & Luftdaten.info where you can find a wealth of information |