Which AQI range corresponds to "Unhealthy for Sensitive Groups"?
Show answer & explanation
Correct answer: A
Explanation
Answer: 101–150
Explanation: The Air Quality Index (AQI) range of 101–150 is categorized as “Unhealthy for Sensitive Groups”. At this level, people with respiratory diseases, children, and the elderly may experience health effects. General public health impact is minimal, but sensitive individuals should limit prolonged outdoor exposure.
Additional Key Facts
AQI is used to measure air pollution levels and health impact.
The Air Quality Index is divided into categories based on pollutant concentration.
0–50: Good
51–100: Moderate
101–150: Unhealthy for Sensitive Groups
151–200: Unhealthy
201–300: Very Unhealthy
301–500: Hazardous
Potential Exam-Oriented Questions & Answers
Question: What AQI level is considered “Hazardous”?
Answer: 301–500
Question: What does AQI measure?
Answer: Level of air pollution and its impact on health