What Does the Number On My Air Purifier Mean?

What is the meaning of that number displayed on your air purifier? Many popular air purifiers including Xiaomi and Phillips display live air quality readings. But what exactly do these numbers mean and are they even accurate? In this article, we break down everything you need to know about that …

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Manama Bahrain Air Pollution One of Worst in World

25 Most Polluted Cities in the World (2022 Rankings)

Air pollution is one of the leading causes of death around the world. But which cities and countries are the most polluted in the world? Smart Air analyzed 2021 and 2022 air pollution data for 529 major cities from 88 countries around the world to create the 2022 updated ranking …

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Did Hyderabad’s Air Quality Improve in 2021?

How was Hyderabad’s 2021 air quality? Did Hyderabad’s air quality improve in 2021 compared to recent years? Air pollution in 2020 averaged levels over 4 times the World Health Organization’s (WHO) recommended limit for PM2.5 levels. Smart Air dove into the data to see if there was any improvement in 2021. Hyderabad …

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Did Chennai Air Quality Get Better in 2021?

Chennai air quality worsened by 11.5% in 2021 compared to 2020. This leaves Chennai with air pollution levels 6 times higher than the World Health Organization’s annual limit. What are the trends in Chennai air quality and how does Chennai air pollution compare to other Indian cities? Chennai Air Quality: …

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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 …

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Which Way Round Should a Surgical Face Mask Go?

Surgical masks are designed to be worn in one direction only. However, it can be difficult to know which way round a medical face mask should go. Should the blue side face out, or in? Some surgical masks are white all over, which way round should these white face masks …

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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 …

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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 …

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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.