cityBreathe app for iPhone and iPad

With cityBreathe you can track 8 of some of the most prevalent pollutants in our air, including Nitrogen Dioxide, Ozone, Particulate 10, Particulate 2.5 and Sulphur Dioxide¹. Using over 2,500 weather stations across the world cityBreathe can accurately determine the pollution in the United States, Canada, Mexico and the United Kingdom. See the individual levels, your previous exposure and advice on what the pollutants can do and how to best avoid exposure. This also includes specific advice for those who may be at risk due breathing conditions².

If you enable "At risk notifications" GPS will be used periodically in the background to determine the level of pollutants in the area. Continued use of GPS running in the background can dramatically decrease battery life.

¹ Subject to the closest pollution stations configuration and availability.
² This advice should be used as suggestions and you should always seek the advice of a professional if suffering from symptoms.