AirNow was designed to provide the public with real-time air quality observations, forecasts and health information that citizens can use to plan activities such that exposure can be reduced. AirNow provides information about current Air Quality Index (AQI) which tells you how clean or polluted your outdoor air is, along with associated health effects that may be of concern. The AQI translates air quality data into numbers and colors that help people understand when to take action to protect their health.
The public can access AQI info from the platforms below: - At http://www.airnow.gov - On Facebook and Twitter - Through EnviroFlash email alerts - With the free AirNow App for iPhones and Android - With the customizable AirNow Widget
AirNow has developed a real-time air quality standard that is used by all data submitters; for interoperability, an AirNow API provides service-based data capabilities. Data is used daily by air quality forecasters and sometimes emergency responders. It is also consulted for epidemiological studies.