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Air Quality Index Scale

0 - 50
Good
51 - 100
Moderate
101 - 150
Unhealthy for Sensitive Groups (USG)
151 - 200
Unhealthy
201 - 300
Very Unhealthy
301 - 500
Hazardous

Values above 500 are beyond the AQI scale.

Current Air Quality

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Air Quality Forecast

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Announcements

https://www.airnow.gov/announcement/5403

Recursos de AirNow en español

2022-08-04

Ahora los recursos de AirNow en español son más fáciles de encontrar. Haga clic en los “Recursos en español” para encontrar los enlaces a nuestros documentos en español sobre el Índice de Calidad del Aire, cómo prepararse para los incendios forestales y más. 

https://www.airnow.gov/announcement/4636

Celebrate Air Quality Awareness Week

2022-05-03

It’s Air Quality Awareness Week! This year’s theme is “Be Air Aware and Prepared.” Learn how you can be aware and prepared by checking out daily information about air quality topics, including wildfire smoke, asthma, and environmental justice, among others. Celebrate #AQAW2022 with us on Twitter and Facebook.

https://www.airnow.gov/announcement/4831

Wildfire Guide Information Page

2021-10-04

We’ve created a new Wildfire Guide Information Page where you can find the updated Wildfire Smoke: A Guide for Public Health Officials (Wildfire Guide). The page includes links to Wildfire Guide Factsheets for the public, and Post-Publication Updates, where you can find up-to-date guidance and other new evidence-based information for public health officials.