Is AirNow data free to use?

Yes. AirNow is a work of the U.S. government and is in the public domain. You can use it without a license; citing U.S. Environmental Protection Agency is good practice.

Who publishes AirNow?

U.S. Environmental Protection Agency publishes it. The official page is https://www.airnow.gov/.

How current is AirNow on DatenUS?

The latest data we loaded is as of 10/30/2026. We check the source on a schedule and update the pages that use it.

How should I cite this data?

Cite the original publisher: AirNow, U.S. Environmental Protection Agency, https://www.airnow.gov/. If you used a DatenUS page, you can add its URL as the place you viewed it.

AirNow

U.S. Environmental Protection Agency · Safety & environment

Published by: U.S. Environmental Protection Agency
Status on DatenUS: Live; Data as of 10/30/2026
License: Public domain; Data are preliminary and subject to change.

What this data covers

AirNow is published by U.S. Environmental Protection Agency. DatenUS uses it for: Air quality. We load it on a schedule from the official source and show the date of the latest update on every page that uses it.

Official source: airnow.gov

Where to see this data on DatenUS

Pages built from this source, by topic

Frequently asked questions

Is AirNow data free to use?: Yes. AirNow is a work of the U.S. government and is in the public domain. You can use it without a license; citing U.S. Environmental Protection Agency is good practice.
Who publishes AirNow?: U.S. Environmental Protection Agency publishes it. The official page is https://www.airnow.gov/.
How current is AirNow on DatenUS?: The latest data we loaded is as of 10/30/2026. We check the source on a schedule and update the pages that use it.
How should I cite this data?: Cite the original publisher: AirNow, U.S. Environmental Protection Agency, https://www.airnow.gov/. If you used a DatenUS page, you can add its URL as the place you viewed it.

Source: U.S. Environmental Protection Agency · Data as of 10/30/2026