Top 20 Most Polluted Countries in the World

Nearly all countries in the world have dangerous levels of air pollution, and the most polluted countries in the world have levels over 15 times the WHO recommended limit. Smart Air analyzed 2021 air pollution data provided by IQAir for 6475 cities from 117 countries to determine the most polluted …

Read more

Mumbai During Lockdown

Mumbai Air Quality Exceeds 8 Times WHO Limit in 2021

Mumbai air quality improved 2% in 2021, compared to the previous year. These higher air pollution levels push Mumbai’s annual PM2.5 average to more than eight times the World Health Organization’s annual limit of 5 µg/m3. Let’s dive into what trends we see throughout the year with Mumbai air quality and …

Read more

Did Bangalore Air Quality Get Better in 2021?

Analyzing air quality data from the Berkeley Earth Project, Smart Air found that Bangalore air quality worsened by 3% in 2021 compared to 2020. This leaves Bangalore with air pollution levels 6 times higher than the World Health Organization’s annual limit. Bangalore Air Quality by Month Breaking down the data by …

Read more

Kolkata Air Quality Exceeds 14 Times WHO Limit in 2021

Analyzing air pollution data from the US Consulate, Smart Air found that Kolkata’s air quality levels did not improve in 2021 compared to last year. With an annual PM level of 71 micrograms, the citizens of Kolkata are still breathing air pollution that is 14 times the WHO annual limit. …

Read more

Did Delhi Air Quality Get Better in 2021?

How was Delhi’s air quality in 2021? Did Delhi’s air quality improve in 2021 compared to recent years? Delhi air quality has seen little improvement recently. Air pollution levels have hovered around 20x the World Health Organization’s (WHO) recommended limit for PM2.5 levels. Smart Air dove into the data to …

Read more

Did India Air Pollution Improve in 2021?

How did India air pollution fare in 2021? Did the COVID-19 second wave affect air quality in India? Smart Air analyzed 2021 India air pollution data for five of India’s major cities: Delhi, Mumbai, Kolkata, Chennai, and Hyderabad. 2021 India Air Pollution Report Of the five major Indian cities analyzed …

Read more

20 Least Polluted Cities in India (2022 Rankings)

Looking to find one of the least polluted cities in India to get a break from the air pollution? Smart Air analyzed air pollution data for dozens of Indian cities to generate the 2022 ranking of the “20 Least Polluted Cities in India”. Scroll down below for the full rundown …

Read more

Delhi smog tower

Delhi Unveils Smog-Fighting Purifier Tower, But Does It Work?

Delhi is one of the most polluted cities in the world. PM2.5 pollution levels reach more than 10 times the World Health Organization’s annual limit. To combat air pollution, the Delhi government recently installed a new smog tower in the center of the city. But will this Delhi smog tower have an effect …

Read more

20 Most Polluted Cities in India (2022 Rankings)

Air pollution is one of the leading causes of death in India. So which cities in India are the most polluted? Smart Air analyzed 2021 air pollution data for dozens of Indian cities to generate the 2022 ranking of the “20 Most Polluted Cities in India”. Scroll down below for …

Read more

2021 Diwali Pollution: Worst in Delhi’s Recent History?

What effect did 2021 Diwali have on Delhi air pollution? We previously discussed Diwali’s serious impact on Delhi air pollution. But how did 2021 Diwali pollution compare to past years? Analyzing 2021 Diwali Air Pollution in Delhi To get to the bottom of this, the Smart Air team in India …

Read more

Smart Air is a social enterprise that creates simple, no-nonsense air purifiers and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.