PurpleAir Blog

  • Bangladesh Air Quality Fact Sheet 2021

    Bangladesh is currently the world’s most polluted country, with air quality at levels that are dangerously low for human health. With its streets full of pollutant-heavy activities, such as industrial factories, dust burning, and mega project sites, residents in cities such as Dhaka are feeling the burden by having to face unprecedented levels of air pollution.
  • United Kingdom Air Quality Fact Sheet

    The UK is one of the few places in the world that has been successfully decreasing overall levels of air pollution over recent years. In the past decade alone, the country has effectively cut its SO2 gas emissions by almost half. In 2019, the total emissions were nearly 300Gg less than in 20102.
  • India Air Quality Fact Sheet 2021

    India’s growth in recent decades has resulted in an exponential increase in the number of vehicles and industrial factories emitting pollutants into the atmosphere. As a result, the air quality has been worsening, with big cities seeing some of the highest levels of air pollution in the world. Particulate Matter (PM) concentrations have increased over the past decade and have since become a grave health concern for millions in the country.
  • China Air Quality Fact Sheet 2021

    The past two decades of industrial expansion in China have resulted in an exponential increase in air pollution, decreasing the nation’s air quality. These recent spikes in pollutants, such as Particulate Matter (PM), have resulted in health concerns that have subsequently decreased the average life expectancy for residents.
  • US Air Quality Fact Sheet 2021

    While studies show that air quality in the US is significantly better than it was 50 years ago, the World Health Organization (WHO) is updating its standards of what acceptable air quality is.

    With the WHO’s new safety guidelines of no more than 5 µg/m³ of particulate pollution, it seems that the vast majority of Americans (~97%) are at risk of unsafe levels of air pollution.