People spend approximately 90 percent of their time indoors, which makes indoor air quality a major contributing factor towards their health. For non experts, measuring and understanding air quality is difficult without special tools and expensive equipment.

We designed inAir, a tool for measuring, visualizing, and learning about indoor air quality. inAir provides historical and real-time visualizations of indoor air quality by measuring tiny hazardous airborne particles, Particulte Matter, as small as 0.5 microns in size.

Particulate matter is the primary cause of indoor air quality problems contributing to the development of health hazards such as respiratory problems, heart disease and lung cancer. It is also closely linked with human activities such as cooking, cleaning and ventilation. It is an airborne mixture of microscopic solid particles and liquid droplets made up of a number of components, including acids such as nitrates and sulfates, organic chemicals, metals, and dust. Those can be inhaled and trapped in various parts of the respiratory tract. Exposure to fine particles between 0.5 and 2.5 microns poses a great risk particularly to people with respiratory problems and older adults. Healthy people also may experience temporary symptoms from exposure to elevated levels of particles.

We designed and implemented inAir, a personal tool for sensing and evaluating indoor air quality to improve awareness and understanding of indoor air quality. inAir consists of three parts; a commercially available air quality sensor, an iPod Touch and an arduino micro-controller.

  • inAir: Measuring and Visualizing Indoor Air Quality

    Sunyoung Kim and Eric Paulos

    In the Proceedings of Ubicomp 2009, 11th International Conference on Ubiquitous Computing. Orlando Florida, USA.

  • inAir: Sharing Indoor Air Quality Measurements and Visualizations

    Sunyoung Kim and Eric Paulos

    In the Proceedings of CHI 2010, To appear