Air pollution is harmful to health, adversely affecting millions of people globally. Yet, it can be difficult to access meaningful air quality data in a simple and timely way and to monitor respiratory health without specialist equipment or medical expertise. The Asthma Foundation will develop a mobile and web-based health app to aggregate and report on real-time air quality data, along with a wearable sensor to monitor personal respiratory data. This will enable people to better manage the impact of air pollution on their health. In three years, the project will help 40,000 people better predict and prevent asthma attacks, thereby reducing the economic and health costs of air pollution.