Question:easy
Post Diwali air pollution index chart was created. Air quality index values on 4 different days were plotted. An AQI value of 470 indicates which level of air pollution?
Post Diwali air pollution index chart was created. Air quality index values on 4 different days were plotted. An AQI value of 470 indicates which level of air pollution?
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Use the Indian CPCB AQI scale where values above 401 correspond to the highest named category.
Updated On: Jun 23, 2026
- Poor
- Very poor
- Severe
- Moderate
Show Solution
The Correct Option is C
Solution and Explanation
Air Quality Index (AQI) -- Indian CPCB Scale:
India's Central Pollution Control Board (CPCB) uses the following AQI classification:
| Category | AQI Range |
|---|---|
| Good | 0-50 |
| Satisfactory | 51-100 |
| Moderate | 101-200 |
| Poor | 201-300 |
| Very Poor | 301-400 |
| Severe | 401 and above |
An AQI value of 470 falls above 401, placing it firmly in the Severe category.
Health implications of Severe AQI: Affects even healthy individuals; serious respiratory effects in the general population; all outdoor activities should be avoided.
\[\boxed{\text{Severe (AQI} = 470, \text{ range } \geq 401)}\]
India's Central Pollution Control Board (CPCB) uses the following AQI classification:
| Category | AQI Range |
|---|---|
| Good | 0-50 |
| Satisfactory | 51-100 |
| Moderate | 101-200 |
| Poor | 201-300 |
| Very Poor | 301-400 |
| Severe | 401 and above |
An AQI value of 470 falls above 401, placing it firmly in the Severe category.
Health implications of Severe AQI: Affects even healthy individuals; serious respiratory effects in the general population; all outdoor activities should be avoided.
\[\boxed{\text{Severe (AQI} = 470, \text{ range } \geq 401)}\]
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