A Machine Learning Approach to Predict Air Quality in California

Table 11

The six AQI categories defined by EPA.

Air quality index value range	Levels of health concern	Description
0 to 50		Air quality is considered satisfactory.
51 to 100		Air quality is acceptable; however, for some pollutants, there is a moderate health concern for a small number of people, namely, those that experience respiratory problems.
101 to 150		Although for most of the people, the health concern is moderate, for groups with lung diseases, the elderly, and children, there is a great risk of exposure to some pollutants and particulates.
151 to 200		Health side effects for all the affected area population. Sensitive groups may experience more serious effects.
201 to 300		Health alerts would be triggered as all the affected area population would experience serious health effects.
301 to 500		Health alerts with emergency warnings would be triggered. The entire area population would be severely affected.