The CPCB (Central Pollution Control Board) National Ambient Air Quality Standard for PM2.5 in India is:

• A Annual mean: 15 μg/m³; 24-hour mean: 35 μg/m³
• B Annual mean: 25 μg/m³; 24-hour mean: 75 μg/m³
• C Annual mean: 10 μg/m³; 24-hour mean: 25 μg/m³
• D Annual mean: 40 μg/m³; 24-hour mean: 60 μg/m³ ✓

Explanation

India's National Ambient Air Quality Standards (NAAQS) set the PM2.5 standard at annual mean 40 μg/m³ and 24-hour mean 60 μg/m³. These are considerably less stringent than WHO 2021 guidelines (annual 5 μg/m³, 24-hr 15 μg/m³), reflecting India's developmental context. PM10 annual mean is 60 μg/m³.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.