Key Takeaway Points
- India Has Cities with Clean Air: While air pollution is a concern in many Indian cities, places like Tirunelveli, Naharlagun, and Madikeri have notably better air quality, offering residents a healthier environment.
- Pollution Levels Vary Daily: The air quality data presented in this blog is based on real-time monitoring (March 18, 2025). AQI levels can fluctuate daily, so continuous monitoring is essential for an accurate assessment
- Geographical & Environmental Factors Matter: Many of the least polluted cities are located in hilly, forested, or coastal regions, such as Naharlagun in Arunachal Pradesh and Madikeri in Karnataka, where natural factors aid in air purification.
- Limited Industrialization Leads to Better Air Quality: Cities with less industrial activity tend to have cleaner air. For instance, Naharlagun and Madikeri have low industrial emissions compared to heavily industrialized cities.
- PM10 and PM2.5 Are the Primary Pollutants: The major air pollutants recorded in these cities are PM10 and PM2.5, which are key indicators of air quality. Monitoring these pollutants helps understand potential health risks.
- Tamil Nadu & Karnataka Lead in Air Quality: Most of the least polluted cities are concentrated in Tamil Nadu and Karnataka, showing that some states are better at maintaining cleaner air through geography and governance.
- Green Spaces Play a Crucial Role: The presence of forests, parks, and river systems in cities like Tirunelveli and Madikeri significantly contributes to natural air purification and lower AQI levels.
- No City Meets WHO’s Clean Air Standards: While these cities have better air quality than others, none of them meet the World Health Organization’s recommended pollution levels, highlighting the need for stricter environmental policies.
- Real-Time Air Quality Monitoring Is Essential: The blog emphasizes the importance of continuous air quality monitoring through advanced air quality monitoring devices like those from Oizom, which provide accurate data even in extreme conditions.
- Sustainable Living Is the Key to Cleaner Air: The cleanest cities in India set a benchmark for sustainable urban development, proving that balancing economic growth with environmental conservation is crucial for improving air quality.
Top 10 Least Polluted Cities in India: Find Out Where the Air is Fresh.
When we think about air pollution in India, densely populated cities like Delhi and Mumbai often come to mind. In the previous article, I discussed the top 10 most polluted cities in the world in 2025. But what if I told you there’s a hidden gem in India that’s leading the way in clean air? Are you trying to find the cleanest city in India to escape the air pollution? So, Today, I came up with the least polluted city in India. In a nation where industrialization and rapid urbanization have frequently caused environmental issues, some areas stand out for their dedication to maintaining clean, fresh air. India, a country renowned for its varied landscapes and cultural traditions, is also home to cities with extremely low air pollution.
Imagine waking up to the chirping of birds, enjoying outdoor activities without the constant worry of air quality, and feeling rejuvenated by the clean atmosphere around you. In this blog, we’ll take a closer look at the least air-polluted cities in India, Scroll down for more information regarding the pollution-free Indian cities.
Picture yourself in a city where the air is crisp, the sky is clear, and every breath feels refreshing. While much of India battles air pollution, there are still places where you can experience this kind of clean air. Wondering where they are? Let’s explore the top 10 least polluted cities in India and uncover what makes them special
Top 10 least polluted cities in India
Are you looking to find India’s cleanest cities with the best air quality? These locations are establishing standards for sustainable living. Continue reading to find out more!
Pollution Levels Vary Daily” → Think of air quality like the stock market, constantly changing based on environmental and human factors. This is why real-time monitoring is crucial for making informed decisions about outdoor activities and health.
1.Tirunelveli, Tamil Nadu
- Tirunelveli, Tamil Nadu, is a city known for its rich culture, the iconic Nellaiappar Temple, and the famous ‘Irutu Kadai Halwa.’ Nestled along the Thamirabharani River, it boasts natural beauty with green spaces like Kalakkadu Wildlife Sanctuary and Papanasam Hills.
- While Tirunelveli recently topped India’s air quality charts with an AQI of 33, its current PM 10 stands at 35 (‘Fair’). The city’s cleaner air is largely due to its abundant greenery, fewer industrial emissions, and natural air purification from its surroundings. Moreover, the air is pure, ideal for outdoor activities.
- The primary pollutant measured was PM10. Monitoring PM10 levels is essential to assess air quality and understand its impact on human health and the environment.
- “India Has Cities with Clean Air” → Did you know that Tirunelveli’s air quality is so clean that it equates to smoking 0 cigarettes a day? While major metros struggle with smog, a few Indian cities continue to enjoy fresh air, proving that sustainable practices and geographical advantages make a real difference.
2.Naharlagun, Arunachal Pradesh
- Nestled in the Himalayan foothills, Naharlagun, Arunachal Pradesh, is renowned for its serene landscapes and rich cultural heritage. As of March 18, 2025, the town’s Air Quality Index (AQI) is 92, categorized as ‘Moderate’.
- Naharlagun’s relatively clean air can be attributed to its abundant greenery and low industrial activity. The town is surrounded by lush hills and forests, which act as natural air purifiers. Additionally, the presence of well-maintained parks like Polo Park and Nehru Park provides residents and visitors with ample green spaces to enjoy.
- Its current PM 10 stands at 43.
- The town’s commitment to preserving its natural beauty and promoting sustainable practices contributes to its commendable air quality, making Naharlagun a refreshing escape for those seeking tranquility amidst nature.
- The primary pollutant measured was PM10. Monitoring PM10 levels is essential to assess air quality and understand its impact on human health and the environment.
3.Madikeri, Karnataka
- Madikeri, Karnataka, set in the Western Ghats, is known for its coffee plantations, Abbey Falls, and Raja’s Seat, offering stunning valley views. With an AQI of 43 (‘Good’), the town enjoys fresh air and minimal pollution.
- Its dense forests, coffee estates, and lack of heavy industries help maintain air quality. The cool climate, rich biodiversity, and sustainable tourism practices further keep the environment clean. Whether for its scenic landscapes or refreshing weather, Madikeri is a perfect getaway for nature lovers.
- Its current PM2.5 stands at 44.
- The primary pollutant measured was PM2.5. Monitoring PM2.5 levels is essential to assess air quality and understand its impact on human health and the environment.
4.Vijayapura, Karnataka
- Vijayapura, formerly known as Bijapur, is a city in Karnataka renowned for its remarkable Islamic architecture. The iconic Gol Gumbaz, boasting one of the world’s largest domes, and the elegant Ibrahim Rauza, often dubbed the “Taj Mahal of the Deccan,” are standout attractions.
- As of March 18, 2025, Vijayapura’s Air Quality Index (AQI) is 87, categorized as ‘Moderate.’ This indicates acceptable air quality; however, individuals with respiratory sensitivities should consider limiting prolonged outdoor activities.
- Its current PM 10 stands at 47.
- The city’s relatively clean air can be attributed to its limited industrial activity and expansive green spaces. Landmarks like the Almatti Dam and the well-preserved gardens surrounding historical sites contribute to reducing air pollutants. Additionally, the local government’s initiatives to promote sustainable tourism and urban planning have played a role in maintaining air quality.
- Visitors to Vijayapura can enjoy its rich cultural heritage and architectural marvels while benefiting from its commendable environmental standards.
- The primary pollutant measured was PM10. Monitoring PM10 levels is essential to assess air quality and understand its impact on human health and the environment.
5.Thanjavur, Tamil Nadu
- Thanjavur, commonly known as Thanjai and formerly as Tanjore, is a city in the Indian state of Tamil Nadu. It is the twelfth largest city in Tamil Nadu. Thanjavur is a significant hub for southern Indian religion, art, and architecture. The majority of the Great Living Chola Temples, which are UNESCO World Heritage Sites, are located in and around Thanjavur.
- The air quality in Thanjavur has a 67 index value, which is considered Moderate. Moreover, the air is pure, ideal for outdoor activities.
- Its current PM 10 stands at 47.
- The primary pollutant measured was PM10. Monitoring PM10 levels is essential to assess air quality and understand its impact on human health and the environment.
- Vellore, commonly known as Velur, is a large metropolis and the administrative center of the Vellore district in Tamil Nadu, India. It is situated on the Palar River’s banks in the northeastern Tamil Nadu region. Vellore is located on the Mumbai–Chennai arm of the Golden Quadrilateral.
6.Koppal, Karnataka
- Koppal, Karnataka, is renowned for its rich historical and cultural heritage. The city is home to the Mahadeva Temple in Itagi, celebrated for its intricate Chalukyan architecture, and the Koppal Fort considered one of India’s strongest forts, which offers panoramic views of the surrounding landscape.
- As of March 18, 2025, Koppal’s Air Quality Index (AQI) stands at 46, classified as ‘Fair’. This indicates that while air quality is acceptable, individuals with respiratory sensitivities should consider limiting prolonged outdoor activities.
- Its current PM 10 stands at 55.
- Koppal’s relatively clean environment can be attributed to its limited industrial activity and the presence of extensive green spaces. The city’s commitment to preserving its historical sites and natural beauty has also contributed to maintaining better air quality. Visitors to Koppal can enjoy its historical landmarks and natural beauty while benefiting from its relatively clean environment.
7.Varanasi, Uttar Pradesh
- Varanasi, often hailed as the spiritual heart of India, is renowned for its rich tapestry of history and culture. The city is home to the Kashi Vishwanath Temple, a significant pilgrimage site dedicated to Lord Shiva, and the Ghats of the Ganges, where daily rituals and the mesmerizing Ganga Aarti ceremonies captivate visitors. Additionally, the Ramnagar Fort, an 18th-century sandstone fortification, stands as a testament to the city’s regal past.
- As of March 18, 2025, Varanasi’s Air Quality Index (AQI) is reported at 59, categorized as ‘Moderate’. This indicates that while air quality is acceptable, individuals with respiratory sensitivities should consider limiting prolonged outdoor activities.
- Its current PM 10 and PM2.5 stands at 55.
- Visitors to Varanasi can immerse themselves in its profound spiritual ambiance, explore its historic landmarks, and partake in cultural rituals, all while benefiting from the city’s ongoing commitment to environmental betterment.
8.Hubballi, Karnataka
- Hubballi, also known as Hubli, is a vibrant city in Karnataka, renowned for its rich cultural heritage and historical significance. Notable landmarks include the Chandramouleshwara Temple, an exquisite example of Chalukyan architecture, and the Nrupatunga Betta, a scenic hilltop offering panoramic views of the city.
- As of March 18, 2025, Hubballi’s Air Quality Index (AQI) is reported at 91, categorized as ‘Moderate’. This indicates that while air quality is acceptable, individuals with respiratory sensitivities should consider limiting prolonged outdoor activities.
- Its current PM 10 and CO stands at 56
- The city’s relatively clean environment can be attributed to several factors. The presence of numerous parks and green spaces, such as the Unkal Lake, contributes to air purification and offers residents and visitors areas for recreation and relaxation. Additionally, Hubballi’s role as a major trading center, linking Maharashtra, Goa, and Andhra Pradesh with North Karnataka, has fostered economic growth while maintaining environmental consciousness.
- Visitors to Hubballi can immerse themselves in its cultural richness, explore historical sites, and enjoy the city’s natural beauty, all while benefiting from its relatively healthy air quality.
9.Kannur, Kerala
- Kannur, often referred to as the “Crown of Kerala,” is renowned for its unspoiled beaches, historic forts, and vibrant cultural heritage. As of March 18, 2025, Kannur’s Air Quality Index (AQI) was recorded at 60, categorized as ‘Poor,’ indicating that air pollution poses minimal risk to the general population.
- Its current PM 10 stands at 56.
- The city’s relatively clean environment can be attributed to its lush greenery, coastal breezes, and limited industrial activity. These natural and infrastructural factors contribute to maintaining good air quality, making Kannur a refreshing destination for visitors seeking both cultural enrichment and natural beauty.
10.Chhal, Chhattisgarh
- Chhal is a village located in the Dharamjaigarh Tehsil of Raigarh District, Chhattisgarh, India. As of March 18, 2025, Chhal’s Air Quality Index (AQI) is reported at 56, categorized as ‘Poor’. This indicates that the air quality is unhealthy for sensitive groups, and prolonged outdoor activities should be limited.
- Its current PM 10 stands at 56.
- Chhal is notable for its coal mining operations, particularly the Chhal Open Cast (OC) Seam III project, which has a capacity of 6 million tons per year. The village is also known for its cultural heritage, hosting festivals such as the Karma Festival, which showcases traditional Adivasi customs and attracts visitors interested in experiencing local traditions.
- The presence of coal mining activities contributes to the area’s economic development but also poses environmental challenges, including air pollution. Efforts to maintain cleanliness in Chhal include community initiatives to promote environmental awareness and the implementation of regulations to mitigate pollution from industrial activities. However, continuous efforts are necessary to improve air quality and ensure a healthier environment for residents and visitors alike.
Hey there! The data we’re analyzing was gathered in real-time on March 18th, 2025, through the AQI Bulletin of CPCB and real-time AccuWeather. It’s a snapshot of that specific day, which means the numbers can fluctuate daily. So, while this gives us a solid glimpse into the situation on that particular day, remember that tomorrow’s data might tell a slightly different story. Real-time data can be quite dynamic!
Why Should You Care?
While these cities enjoy relatively cleaner air, none of them meet WHO’s recommended air quality standards. This means that even the best air in India isn’t truly “clean” by global benchmarks. Here’s why this matters:
- Health Impact: Poor air quality can lead to respiratory diseases, cardiovascular issues, and reduced life expectancy. Monitoring and improving air quality is crucial.
- Travel & Relocation: If you’re considering moving or planning a trip, knowing which cities have the cleanest air can help you make an informed decision.
- Policy Influence: Understanding which factors contribute to clean air can help push for better environmental policies in heavily polluted regions.
Conclusion
Finally, None of the cities under analysis had pollution levels below the WHO-recommended threshold, despite the fact that the list of the least polluted cities in India is provided above. Tirunelveli and Naharlagun, the least polluted cities in India, Most of the least polluted cities were located in Karnataka and Tamil Nadu. Moreover, air quality monitoring devices are required to have accurate air quality data in cities. By monitoring air quality data with Oizom devices, which monitor various environmental parameters like air quality, polluting gases, odourful and toxic gases, noise, weather conditions, radiation, etc. Using our patented e-breathing technology, Oizom assures the highest accuracy even in extreme environmental conditions. I hope you find these insights helpful and interesting!
FAQs
The Air Quality Index (AQI) is commonly used to quantify air pollution. This considers contaminants such as NO₂, SO₂, CO, O₃, PM2.5, and PM10. To keep tabs on pollution levels, both public and private entities use sensors and air quality monitoring stations.
Heavy traffic, industrial emissions, building dust, and population density all contribute to the high levels of pollution found in major Indian cities like Delhi, Mumbai, and Kolkata. Winter fog is one example of a weather condition that can trap pollutants and deteriorate the quality of the air.
You can check real-time air pollution data on websites and apps like:
- Central Pollution Control Board (CPCB) AQI Dashboard
- SAFAR (System of Air Quality and Weather Forecasting and Research)
- World Air Quality Index (waqi.info)
- AirVisual App
