Which city in India is least polluted?

1. Kollam, Kerala

Kerala is a state most famously known as "God's own country." Kollam, which serves as a prominent trading city for the state, is a coastal city located on the banks of Ashtamundi Lake. It hosts the administrative offices of Kollam district and is also quite progressive-the proportion of females to males in Kollam city is the second highest among the 500 most populous cities in India. The city also boasts of a technopark, which is the only such IT park that can be accessed by road, rail, water and air transportation.

2. Hassan, Karnataka

This town is situated 934 meters above sea level with pleasant weather similar to Bangalore. The town has efficient rail, road and air transportation, and due to its rich history under the Hoysala dynasty, is home to many architectural wonders in the form of temples and more.

3. Madurai, Tamil Nadu

Madurai is the second largest city by area, and third by population, in the state of Tamil Nadu. This city has been the center of learning for Tamil culture, literature, art, music and dance for centuries.

Popularly called "Thoonga Nagaram," meaning the city that never sleeps, Madurai's active nightlife is one of the many reasons the city attracts a large number of tourists from within the country and abroad. The city is also famous for Gandhi Memorial Museum, one of the 5 Gandhi sangrahalayas in India.

4. Pondicherry

A total of 5 languages, including French, Tamil, English, Telugu and Malayalam, are spoken here. TheTamil Nadu State Transport Corporation operates Volvo air-conditioned transportation services from to Pondicherry, with daily bus services just a few main stops away from Chennai. Additionally, Prime Minister Narendra Modi recently announced Pondicherry as a Smart City, as it is now connected by Air India with aircraft service 6 times a week.


General North Indian/ South India people: OMG! Which city is this? May be it is somewhere near Gurgaon or Chennai.

For others who knows where Agartala is, Kudos!! You really are an Indian.

Generally people are well acquainted with Assam, Guwahati, Shillong but what about other states! There are states which are full of vegetation and green environment and Agartala is one of the.

"Agartala ( Agortola) is the capital as well as the largest city of the Indian state ofTripura and also is the second largest city in North-east India after Guwahati, both in municipal area and population. The city is the seat of the Government of Tripura. Agartala is one of the fastest developing cities of India." --Wikipedia

Tripura has a geographical area of 10,490 square km. Of which 6292 square km. (59.98%) is the forest area as per legal classification in the state. For people who are fed up with the concrete jungles, Vegetation of Agartala is the best place for them to breathe in fresh air.

There is a saying that if you breathe in Delhi for an hour its like smoking 10000 cigarettes altogether. But I would say if you breathe in fresh Air of Agartala you can purify your lungs polluted by pollution from major cities.

According to the Central Pollution Control Board (CPCB) India, the least polluted cities in India, ranked based on air quality are Pathanamthitta, Mangalore, Wayanad, Hassan and Palakkad. The table below shows the ranking of these cities as per the PM10 content in the air.

  • 2015

Rank City State/Territory PM10

1 Pathanamthitta Kerala 23

2 Mangalore Karnataka 31

3 Wayanad Kerala 33

4 Hassan Karnataka 36

5 Palakkad Kerala 36

Source: Central Pollution Control Board (CPCB) India


Looks like we already have answers based on how the place feels. While judging a location by the freshness of its air, we must consider that slightly cool and less (not low) humid air feels fresh even if it is rife with particulates and other pollutants. For this reason, parts of Shimla (Himachal Pradesh) may be polluted from vehicular pollution but any resident will swear by how fresh the air is. In reality, people from the plains actually drive up to Shimla (increasing pollution locally) just for the fresh air.

For a scientific truth about the least polluted city in India, one would first need to install AQ monitors in all cities. Installing is important, since you want the data for a whole year to round off natural seasonal variations. Studies for a single day across many cities will miss out the city's polluted days (see Chandpur, which is next to a thermal power plant). Even Andaman & Nicobar and Lakshadweep have some pollution, as per today's data on National Air Quality Monitoring by IIT-Kanpur (available here) Screenshot below.

All the places mentioned here are small towns/villages and not big cities. Among big cities, Chandigarh is by far the least polluted city in India. I am myself living here and always feel a huge difference in air and dirt lying everywhere when I go to Delhi(most often) or any other Indian city. The city is less polluted as it has :

1. Lots of parks and trees to absorb air pollutants.
2. Wide roads preventing traffic congestion.
3. Very good provision of cleanliness. Sweepers clean the entire city early in morning and are honest. They perform their duty even in extremely cold winters.
4. Police is very strict in fining the drivers of vehicles releasing pollutants.
5. Above all is the civic sense among people. People rarely litter the roads, the water bodies etcetera. People generally have their vehicle pollution checked and are concerned about keeping city pollution free.


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