Answer:
the amount of pollutants in the air is unhealthy
Explanation:
AQI or Air Quality Index assesses the air quality. It indicates how clean or unhealthy the air is and its effects. It is calculated by measuring the concentration of major air pollutants across many locations in the country. The air quality is divided into six categories:
- 0 to 50 : good
- 51 to 100 : moderate
- 101 to 150 : unhealthy for sensitive groups
- 151 to 200 : unhealthy
- 201 to 300 : very unhealthy
- more than 300 : hazardous
An AQI of 201 means that the air quality is very unhealthy. Everyone is susceptible to health hazards in this air quality.
