Delhi records best January-October average air quality in eight years, barring 2020
The Environment Ministry said on 31 October 2025 that Delhi's average AQI for January-October 2025 was 170, the best in eight years apart from the 2020 lockdown year.
Summary
Delhi's average Air Quality Index (AQI) for January to October 2025 was 170, the Environment Ministry said on 31 October 2025, the best for that period in eight years apart from the Covid lockdown year 2020. The figure compares with 184 in 2024, 172 in 2023 and 201 in 2018. No day in the period had an average AQI above 400 (Severe or Severe+), against three such days in 2024. The period also had 79 'Satisfactory' days, the highest outside 2020, compared with 66 in 2024.
Key facts
- Period
- January-October 2025
- Average AQI
- 170 (184 in 2024; 201 in 2018)
- Days above AQI 400
- None (3 in 2024)
- Satisfactory days
- 79 (66 in 2024)
- Comparison
- Best in 8 years, barring 2020 lockdown
Practice MCQs 2 questions
What was Delhi's average AQI for January-October 2025, as reported by the Environment Ministry on 31 October 2025?
Show answer
Correct answer: C — 170
Delhi's average AQI for the period was 170, against 184 in 2024 and 201 in 2018.
How many days in January-October 2025 did Delhi record an average AQI above 400 (Severe or Severe+)?
Show answer
Correct answer: A — None
Not a single day in the period had an average AQI above 400; there were three such days in the same period of 2024.