What are top 5 polluted cities?

Based on 2024–2025 air quality data, the top most polluted cities, primarily in South Asia, are consistently ranked for high hazardous 𝑃 𝑀 2.5 𝑃 𝑀 2 . 5 concentrations. The most polluted cities often include Delhi, India; Lahore, Pakistan; Dhaka, Bangladesh; Hotan, China; and Bhiwadi, India. These cities suffer from severe air pollution due to vehicle emissions, industrial output, and seasonal crop burning.

What are the top 20 most polluted cities?

Rankings: 20 Most Polluted Cities in India in 2024

• New Delhi, India (78.7 µg/m3)
• Delhi, India (70.9 µg/m3)
• Ghaziabad, India (53.4 µg/m3)
• Patna, India (51.3 µg/m3)
• Muzaffarnagar, India (50.5 µg/m3)
• Lucknow, India (48.9 µg/m3)
• Chandigarh, India (46.8 µg/m3)
• Jaipur, India (46.4 µg/m3)

Which is the top 10 cleanest city in the world?

There's no single definitive list, but consistently high-ranking clean cities include Copenhagen (Denmark), Singapore, Zürich (Switzerland), Helsinki (Finland), and Auckland (New Zealand), often cited for green initiatives, clean energy, public transport (cycling in Copenhagen), and excellent waste management, though rankings vary by study, with recent reports also highlighting Kraków (Poland), Sharjah (UAE), and Doha (Qatar) for positive cleanliness reviews. 

Which are the top 5 dirtiest cities in India?

Based on the Swachh Survekshan 2025 report, as cited by sources like Indian Express and Deccan Herald, the top 5 dirtiest cities in India with a million+ population are Madurai, Ludhiana, Chennai, Ranchi, and Bengaluru, highlighting persistent issues with waste management and sanitation despite cleanliness initiatives.
 

What is the dirtiest city in the world?

There's no single "dirtiest city," as it depends on the metric (air quality, litter, waste), but Indian and Pakistani cities like Delhi, Lahore, and Bhiwadi consistently rank highest for severe air pollution (PM2.5), while cities like Budapest and Rome sometimes top lists for visible litter based on user reviews, showcasing diverse pollution challenges from smog to trash.
 

Top 5 Most Polluted Cities in the World (2022 Rankings)

What city has the best air quality?

Rankings: 25 Cities with the Best Air Quality

• Zürich, Switzerland (0.7 µg/m3)
• Vitória, Brazil (2.2 µg/m3)
• Hobart, Australia (2.4 µg/m3)
• Halifax, Canada (3.8 µg/m3)
• Vancouver, Canada (3.8 µg/m3)
• Saint-Denis, Réunion (3.8 µg/m3)
• Surrey, Canada (4.0 µg/m3)
• Tampere, Finland (4.0 µg/m3)

What is the cleanest city in the USA?

There's no single "cleanest" city, as it depends on metrics, but Honolulu, HI often tops lists for air quality and natural beauty, while metro areas like Portland, OR and Seattle, WA score high for overall environmental factors, and Chicago, IL, is noted for effective street cleanliness due to its alleyways. Rankings vary, with some studies highlighting Hawaii's air, others focusing on garbage disposal, and some on specific programs like Portland's green initiatives or Chicago's alley system for hiding trash.
 

What is the cleanest state in America?

While it varies by metric, Hawaii consistently ranks as the cleanest state, leading in air and water quality due to natural factors like trade winds and underground aquifers, with strong showings also from Vermont, Maine, Massachusetts, and Washington, which score high in clean air, water, recycling, and low pollution. 

Which three cities in the US have the highest no-emissions?

Three cities throughout the country that are making major strides toward reaching net zero are San Francisco, Boston and Austin. Identifying what these three cities have in common can serve as a guide for other cities that strive to reach net zero.

Which US city has the worst air quality?

Los Angeles air pollution

Los Angeles has the most contaminated air in the country.

Which city is the most polluted in the world 2025?

Real-time 100 Most Polluted Cities in The World 2025 Live

• Mainpuri, India. 929. Hazardous.
• Greater Noida, India. 873. Hazardous.
• Khairabad, India. 730. Hazardous.
• Noida, India. 730. Hazardous.
• Aligarh, India. 706. Hazardous.
• Varanasi, India. 703. Hazardous.
• Khurja, India. 696. Hazardous.
• Ghaziabad, India. 688. Hazardous.

Which US cities have the most litter?

Top Ten Cities with the Most Roadside Litter

• #1: San Francisco. ...
• #2: Los Angeles. ...
• #3: Philadelphia. ...
• #4: New Orleans. ...
• #5: Portland. ...
• #6: Memphis. ...
• #7: Milwaukee. ...
• #8: New York City.

Which is the no. 1 cleanest country in the world?

According to the 2024 Environmental Performance Index (EPI), Estonia is the cleanest country, scoring highest for protecting human health and ecosystems, followed closely by Luxembourg and Germany, with Finland and Denmark also ranking top for their strong environmental policies, clean air, and water. Different rankings highlight specific strengths, but generally, European nations dominate the top spots due to effective waste management, renewable energy use, and low pollution.
 

Who air pollution 99%?

Almost 99% of the world's population is exposed to air pollution, breathing air that exceeds WHO's safe guideline limits. Air pollution contributes to 6.7 million premature deaths every year, with low- and middle-income countries most affected. Cleaner air, healthier lives.

What are the 10 most polluted places on Earth?

The most polluted places on Earth are primarily cities in India, Pakistan, and China, dominated by PM2.5 particulate matter, with places like Delhi, Bhiwadi, Hotan, and Lahore consistently topping air quality lists, while countries like Chad, Bangladesh, and Pakistan face extreme national averages, highlighting severe air pollution issues impacting billions globally.
 

Which is the no. 1 cleanest city in the world?

Copenhagen, Denmark: The cleanest city on the planet

Currently, the energy mix exceeds 30%, and it is expected to achieve energy independence by 2050. Notable features: Bicycle implementation: Copenhagen has 700,000 bicycles. 62% of its citizens use them.

What is the no. 1 dirtiest country in the world?

While rankings vary by data source, Chad and Bangladesh consistently rank as the world's dirtiest or most air-polluted countries in recent reports (2024/2025), primarily due to extremely high PM2.5 levels from dust, burning, and industry, with Pakistan and the DRC often following closely. Different metrics exist, but Chad led in PM2.5 concentrations in 2024, while Bangladesh often tops other reports based on similar metrics or being a consistent leader. 

Which is the dirtiest city on Earth?

There's no single "dirtiest city," as it depends on the metric (air quality, trash, etc.), but Lahore (Pakistan) and Delhi (India) frequently top air pollution lists (PM2.5), while some reports rank Budapest (Hungary) or Las Vegas (USA) as dirtiest based on tourism-related trash issues, highlighting different aspects of urban grime. 

Which is the top 10 cleanest city?

Top 10 Cleanest Cities in India to Visit in 2025 for a Pollution-Free Experience

1. Indore – The Cleanest City in India 2025, Yet Again. ...
2. Surat – Gujarat's Industrial Powerhouse and the 2nd Cleanest City in India. ...
3. Navi Mumbai – India's Planned and Pollution-Free Marvel. ...
4. Mysuru – Cleanliness in the Lap of Royalty.

Which is the safest city in India?

There isn't one single "safest" city, as rankings vary, but Mangalore, Kolkata, Hyderabad, Chennai, and cities in Gujarat (Vadodara, Ahmedabad, Surat) consistently rank high for overall safety, low crime, and good quality of life in recent (2024-2025) reports, often cited for strong policing, community support, and infrastructure. Kolkata often leads in women's safety indices, while Mangalore tops crowd-sourced safety indices like Numbeo.