Top 10 Indian Cities With the Best and Worst Air Quality in November 2025

As winter sets in, India’s air pollution problem has returned with alarming severity—particularly in North India. Low wind speeds, falling temperatures, and increased emissions have pushed the Air Quality Index (AQI) of several major cities into the ‘very poor’ or ‘severe’ category.

According to the Central Pollution Control Board (CPCB) and data from IQAir Live AQI⁺ Rankings, New Delhi continues to hold the grim title of the world’s most polluted capital city, as of November 25, 2025.

Understanding AQI Levels

AQI Range Air Quality Category Health Implication
0–50 Good Minimal impact
51–100 Satisfactory Minor breathing discomfort
101–200 Moderately Polluted Discomfort to sensitive individuals
201–300 Poor Breathing discomfort on prolonged exposure
301–400 Very Poor Respiratory illness on prolonged exposure
401–500 Severe Serious health impacts; emergency conditions

Top 10 Indian Cities With Worst AQI (Most Polluted) – November 2025

The National Capital Region (NCR) dominates this list, with cities in Uttar Pradesh and Haryana recording dangerously high pollution levels.

Rank City State AQI Category Major Pollutants
1 Hapur Uttar Pradesh 416 Severe PM2.5
2 Noida Uttar Pradesh 397 Very Poor PM10, PM2.5
3 Ghaziabad Uttar Pradesh 396 Very Poor PM10, PM2.5
4 Delhi (NCT) Delhi 382 Very Poor PM2.5
5 Greater Noida Uttar Pradesh 382 Very Poor PM2.5
6 Charkhi Dadri Haryana 366 Very Poor PM2.5
7 Bulandshahr Uttar Pradesh 356 Very Poor PM2.5
8 Meerut Uttar Pradesh 350 Very Poor PM10, PM2.5
9 Manesar Haryana 342 Very Poor PM2.5
10 Baghpat Uttar Pradesh 330 Very Poor PM2.5
Delhi’s AQI remained at a hazardous 382, prompting emergency measures under the Graded Response Action Plan (GRAP) including bans on construction, vehicle restrictions, and anti-smog operations.

Top 10 Indian Cities With Best AQI (Cleanest) – November 2025

In sharp contrast, Southern and Northeastern states have shown remarkable air quality. Tamil Nadu dominates the list with clean, breathable air in 8 out of 10 cities.

Rank City State AQI Category Main Pollutant
1 Ariyalur Tamil Nadu 13 Good SO₂
2 Ooty Tamil Nadu 15 Good SO₂
3 Karur Tamil Nadu 16 Good SO₂
3 Tiruchirappalli Tamil Nadu 16 Good SO₂
4 Thanjavur Tamil Nadu 17 Good SO₂
5 Shillong Meghalaya 17 Good PM10
6 Perundurai Tamil Nadu 21 Good PM10
7 Tirupur Tamil Nadu 22 Good CO
8 Salem Tamil Nadu 22 Good PM2.5
9 Mangalore Karnataka 25 Good O₃
10 Davanagere Karnataka 26 Good CO
With an AQI of just 13, Ariyalur is officially India’s cleanest city as of November 2025.

Why Is Northern India So Polluted?

Several factors contribute to the North’s pollution crisis:

  • Crop residue burning in Punjab and Haryana
  • Vehicular emissions in densely populated cities
  • Construction dust and industrial smoke
  • Low wind speeds and temperature inversion trap pollutants
  • Firecracker use during festival season (Diwali)

Why Southern and Northeastern Cities Are Cleaner

  • Less industrialization and population density
  • Effective implementation of pollution norms
  • Abundant green cover and favorable geography
  • Limited use of fossil fuels for domestic purposes
Sumit Arora

As a team lead and current affairs writer at Adda247, I am responsible for researching and producing engaging, informative content designed to assist candidates in preparing for national and state-level competitive government exams. I specialize in crafting insightful articles that keep aspirants updated on the latest trends and developments in current affairs. With a strong emphasis on educational excellence, my goal is to equip readers with the knowledge and confidence needed to excel in their exams. Through well-researched and thoughtfully written content, I strive to guide and support candidates on their journey to success.

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