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The higher the AQI value, the higher the level of air pollution and the greater the health risk. AQI is divided into six categories. Each category corresponds to a different level of health risk.
Good: Air quality is considered satisfactory, and air pollution poses little or no risk.
Moderate: 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: Members of sensitive groups may experience health effects. The general public is not likely to be affected.
Unhealthy: Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
Very Unhealthy: Health warnings of emergency conditions. The entire population is more likely to be affected.
Hazardous: Health alert: everyone may experience more serious health effects
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