9/22/14: AIRNow is experiencing technical difficulties with our maps. We are sorry for the inconvenience.
AIRNow will be undergoing maintenance Sunday, 9/14/14 from 7:00 AM to 8:00 PM EDT. We apologize for any inconvenience.
The Maryland Department of the Environment has scheduled an air monitoring data outage from the evening of September 12 - 15, 2014. Data will return on Tuesday September 16th.
11/04/14: Updated AirNow materials in Spanish- Ozone and Your health and Guide to Air Quality for Ozone
EnviroFlash is currently experiencing technical difficulties. The www.EnviroFlash.info sign-up webpage is unavailable, and notifications are delayed. We are working to resolve the issue, and all scheduled notifications will be sent as soon as possible. We apologize for any inconvenience caused by this outage.
10/15/14: Mexico City joins AirNow.
9/12/14: AIRNow is experiencing technical difficulties with our maps. We are sorry for the inconvenience.
8/19/14: New and Improved Air Quality Index Brochure (PDF)
6/2/14: Congratulations to the 2014 EnviroFlash Challenge Winners.
5/30/14: Check out AirNow's new Ozone Facts page.
5/15/14: Check out AirNow’s updated Weathercaster page.
5/1/14: A Look Back: Ozone 2013
Air Quality Awareness Week is 4/28/14-5/2/14. Air Quality Awareness Week website
3/28/14: AIRNow is experiencing technical difficulties. We are sorry for the inconvenience.
3/12/14: AIRNow is experiencing technical difficulties with our maps. We are sorry for the inconvenience.
2/5/14: It’s American Heart Month. Did you know you can use the AQI to help protect your heart? Check out EPA’s new PSA on air pollution and heart health.
1/15/14: An updated Technical Assistance Document for the Reporting of Daily Air Quality is now available.
1/9/14: An updated version of the Air Quality Index (AQI) Toolkit for Teachers is now available.
1/3/14: EPA Proposes Updates to Air Standards for Newly Manufactured Woodstoves and Heaters | Press Release