Did Bangalore’s Air Quality Get Better in 2018?

Analyzing air quality data from the Berkeley Earth Project, Smart Air found that Bangalore’s air quality worsened by 7% in 2018 compared to 2017. This puts Bangalore at about 4 times the World Health Organization’s annual limit.     Bangalore Air Pollution by Month Breaking down the data by month reveals … Read more

Is Beijing or Delhi Air Worse?

Beijing and Delhi often make headlines for air polluted cities, but which city has worse air? I wanted to get some hard numbers on how the two cities’ air quality compare.   The Data To do that, I analyzed PM2.5 data from the US Embassies in Delhi and government monitors … Read more

India Delhi Indoor Air Quality vs Outdoors

Delhi’s Indoor Air Pollution Lower than Outdoors

Whether indoor air is safer than outdoor air is an important question for the millions of people living in heavily polluted cities like Delhi or Bangalore. Yet I’ve heard a lot of disagreement about this question. Is indoor air really safer than outdoor air? Is it true for all areas … Read more

India 2018 Air Quality Report

Air quality in five of India’s major cities saw little improvement in 2018. In short, air quality was flat in Hyderabad year over year, while air quality worsened in Mumbai and Kolkata. Here’s the full data to show you just how bad India’s air quality levels were in 2018:   Worsening … Read more

Did Hyderabad’s Air Quality Improve in 2018?

Analyzing air quality data from the US Consulate, Smart Air found that Hyderabad’s air quality was flat in 2018 compared to last year. At this level, Hyderabad averages nearly six times the World Health Organization’s annual air quality limit.   Month by Month Analysis Breaking down the data by month, … Read more

Did Mumbai’s Air Quality Improve in 2018?

Smart Air analysed Mumbai’s PM2.5 air quality data provided by the US Consulate. What we found was that Mumbai’s PM2.5 levels increased 15% in 2018, giving much poorer air quality than the previous year. These higher air pollution levels push Mumbai’s annual PM2.5 average to more than seven times the … Read more

Did Kolkata’s Air Get Better in 2018?

Analyzing air pollution data from the US Consulate, Smart Air found that Kolkata’s air pollution rose 19% in 2018 compared to last year. This extra smog pushes Kolkata to an average of more than nine times the World Health Organization’s annual limit.   Kolkata started the year with January pollution … Read more

Can air pollution masks help with India's air pollution?

Do Masks Really Work in India’s Air Pollution?

Every year when winter rolls around, a billion people in India are left breathing toxic, polluted air when on the streets. Be it in Delhi, Mumbai, Kolkata or Hyderabad, everyone is forced to become experts in a complicated scientific question to cope with the pollution: Do air pollution masks work? … Read more

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