PurpleAir Blog

  • Update 2022: Air Quality Life Index (AQLI)

    The Energy Policy Institute at the University of Chicago released an update to the Air Quality Life Index earlier this year (June 2022). It brings us new insights into the air quality around the world. The Air Quality Life Index (AQLI) was developed by the University of Chicago’s Milton Friedman Distinguished Service Professor in Economics Michael Greenstone and his team at the Energy Policy Institute at the University of Chicago (EPIC). 
  • Community Spotlight: West Coast Calibration Factor Study

    Each time a PurpleAir sensor is installed, and air quality data is uploaded to the PurpleAir Map, the quality and reach of our community increases. In this post, we highlight the results from a scientific study and discuss what it means in the bigger picture. The network improves with each additional sensor, and studies like the one in this post are also part of the PurpleAir story.
  • Fireworks Today – Can We Do Better?

    There's no doubt that large, night-sky-filled fireworks are dramatic and thrilling. From the immense splashes of colors streaking across the sky to the booms of massive explosions that send sparkles in all directions, fireworks have a unique place in people's hearts. For many, celebrations like 4th of July just feel right if they're capped with dramatic fireworks that get the heart racing. But is that enough? Is the cost too high? Let's see if we can do better.
  • Why Does 'Particulate Matter' Matter?

    For nations in the Northern Hemisphere, we can expect July and August to be the hottest and driest months. Fire danger warnings increase and vast areas become vulnerable to wildfires. This can mean heavy smoke and smog, and here are three reports we should remember as we plan our activities.
  • Summer is Here – Be Prepared

    Summer’s the time for sun, time off, and playing outside. Summer is also the season when temperatures rise, drought conditions increase, and large wildfires make the news. Especially across Western US states, the warmer weather can open the landscape to wildfire risks. Make sure you know what’s happening with your air quality – at home and beyond. 

     

  • High Levels of PM2.5 in the Air

    When the AQI (Air Quality Index) in your area shows extremely high levels of PM2.5 or your PurpleAir sensor shows a health alert, it means that pollution is hazardous at these levels. Consider these steps to reduce your exposure.
  • Hyper-local, Real-time Air Quality Map

    The air we breathe has direct consequences on our health. According to The NOAA, "Poor air quality is responsible for an estimated more than 100,000 premature deaths in the U.S each year". PurpleAir has designed a hyper-local, real-time air quality map that targets the need to measure and visualize air quality.
  • What is Particulate Matter (PM)?

    PM - which stands for particulate matter or particle pollution - is an intricate mixture of liquid droplets made up of acids (like nitrates and sulfates), ammonium, water, black carbon, organic chemicals, metals, soil material, and air-borne particles.