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• Organization: U.S. Environmental Protection Agency
• Dataset Last Updated: January 01, 2014

A REST web service API allowing the retrieval of real time air quality index data from AirNow.

• html
• html

• Organization: District of Columbia
• Dataset Last Updated: August 04, 2026 at 02:15 AM

Dataset is comprised of hourly air quality data points captured from the District’s air monitoring network sites. The dataset is quality controlled by a process of field data verification and...

• api
• html
• csv
• json
• kml
• zip
• +1 more