PurpleAir Blog

  • Particulate Matter 101: What It Is And How Can You Control Its Effects

    What is Particulate Matter? This article addresses the definition of particulate matter, its types, and potential hazards on the human body.

  • Air Quality in Latin America: A Comprehensive Guide

    To better understand the causes, health risks, and what you can do about air quality in Latin America, we first need to look at the most recent data. Read on for the current research.
  • Why Are Winter Wildfires Increasing in Frequency?

    Warmer temperatures in July, August, and September used to pair with dry winds to constitute the fire season. But with the changing temperature trends across the globe, wildfires are no longer restricted to a specific season.
  • What to Know About India’s Crop Burning Season

    Every year, crop burning season drastically affects the air quality in India all across the country. Learn more about crop burning, why it's harmful to the environment, and what can we do to address the issues in our society.
  • Fetal Toxicity: How Particle Pollution Affects Pregnant Women

    It's no secret that particle pollution is bad for your health. But what you may not know is that it can also be harmful to pregnant women and a fetus as it develops. Learn more about the latest research here.
  • All You Need To Know About Dew Point And How It Differs From Humidity

    So, where does condensation come from? The science behind this process is in two words: dew point. This article aims to explain the dew point phenomenon, its measurement, the benefits of monitoring its levels, and how it differs from humidity.

  • NASA Study Finds A Decrease In Ship Tracks In 2020 – What Are The Possible Causes?

    Recently, NASA conducted a study and shared satellite observations and images from 2020, showing lesser-than-usual sulfur-containing tracks from the North Pacific to the Mediterranean.
  • How is PM2.5 Measured?

    PM2.5 is typically measured with an instrument called a PM2.5 monitor or an aerosol sampler. These monitors work by drawing in air and then measuring the concentration of PM2.5 particles on a filter. The results are typically expressed as micrograms per cubic meter of air (μg/m3).
  • Asbestos: What It Is and What You Need to Know

    Asbestos is a naturally occurring substance that was once commonly used in building materials. It is now known to cause serious health problems, so it is vital to be aware of it and take steps to avoid exposure. This article will discuss what asbestos is, where it can be found, and the health risks associated with it.
  • 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.