Delhi records lowest September average AQI in five years (102)
Delhi's monthly average AQI for September 2026 was 102, its lowest for September in five years (2022–2026), the Environment Ministry said on 30 September 2026.
Summary
Delhi's September average AQI was 102 against 105 in 2025 and 2024, 108 in 2023 and 104 in 2022. January–September 2026 had 194 days with AQI below 200, the most in five years, and the fewest 'Poor to Severe+' days (79). Average PM2.5 for the period was 69 µg/m³, joint-lowest since 2022. The Commission for Air Quality Management (CAQM) is coordinating pollution control.
Key facts
- Sept 2026 average AQI
- 102 (lowest Sept in 5 years)
- Sept 2025
- 105
- Days AQI < 200 (Jan–Sep)
- 194 in 2026
- Poor to Severe+ days (Jan–Sep)
- 79
- Avg PM2.5 (Jan–Sep)
- 69 µg/m³
- Agency
- Commission for Air Quality Management (CAQM)
Practice MCQs 1 questions
What was Delhi's monthly average AQI for September 2026, the lowest September figure in five years?
Show answer
Correct answer: B — 102
Delhi's September 2026 average AQI was 102, against 105 in 2025, 105 in 2024, 108 in 2023 and 104 in 2022.