Part 12 · Environmental and Occupational Health
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| Pollutant | WHO AQG 2021 | India NAAQS 2009 |
|---|---|---|
| PM₂.₅ annual / 24‑h | 5 / 15 µg/m³ | 40 / 60 µg/m³ |
| PM₁₀ annual / 24‑h | 15 / 45 µg/m³ | 60 / 100 µg/m³ |
| NO₂ annual / 24‑h | 10 / 25 µg/m³ | 40 / 80 µg/m³ |
| SO₂ 24‑h | 40 µg/m³ | 80 µg/m³ |
| O₃ 8‑h | 100 µg/m³ | 100 µg/m³ |
| CO 8‑h | 4 mg/m³ (24‑h) | 2 mg/m³ (8‑h) |
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