Air Monitoring Data

To ensure data quality, all active criteria pollutant monitors on the Navajo Nation follow a U.S. EPA approved Quality Assurance Project Plan. Navajo Nation air monitoring is conducted in accordance with U.S. EPA quality assurance guidance found in 40 CFR Part 58, Appendix A. Quality assured data for the four (4) criteria pollutants (NO₂, SO₂, O₃, PM_2.5) measured on the Navajo Nation is uploaded on a monthly basis to U.S. EPA’s Air Quality System database (AQS). The reported data allows the Navajo Nation to determine compliance with the National Ambient Air Quality Standards (NAAQS) to protect human health and the environment. 

*FY19 Quarterly Open Burn Registrations and Complaints

*FY19 Ambient Air Quality Monthly Mean Concentrations

*Eastern Agency - Indoor Carbon Dioxide Measurements 2019

*Eastern Agency - Indoor Air Quality Home Assessments 2019

A summary of air quality data reported to AQS can be accessed by following these steps:

1. Click on this link-  NNEPA AQCP -Air Quality Data

2. Go to “Monitor Values Report” and query or search by pollutant, year, state and or county. 

The EPA AQS data base site identification number for our Shiprock monitoring site is 35-045-1233 and is located in San Juan County, Shiprock, NM. The AQS site ID for Nazlini is 04-001-1235 and is located in Apache County, Nazlini, AZ. These codes correspond to State, County, and Site ID. Navajo Nation air quality data can also be obtained by providing a written request to Navajo Nation Air Quality Control Program.