EPA Air Pollutant Monitoring - Nitrogen Dioxide (NO2)

Daily summary of air quality at specified locations in King County (Nitrogen Dioxide). Air quality monitors measure concentrations of NO2 throughout the country. EPA, state, tribal and local agencies use that data to ensure that NO2 in the air is at levels that protect public health and the environment. Nationally, average NO2 concentrations have decreased substantially over the years. The charts below show national and regional trends in NO2 concentrations.

Data and Resources

Field Value
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.kingcounty.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://data.kingcounty.gov/api/views/qnq4-yhva
issued 2021-04-14
landingPage https://data.kingcounty.gov/d/qnq4-yhva
modified 2021-05-19
publisher data.kingcounty.gov
resource-type Dataset
source_datajson_identifier true
source_hash 07256d23f4e52a757abd4dde3bd7c7d627242f46
source_schema_version 1.1
theme {"Environment & Waste Management"}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • air
  • air-quality
  • amerigeo
  • amerigeoss
  • ckan
  • environment
  • epa
  • geo
  • geoss
  • national
  • nitrogen-dioxide
  • north-america
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer King County Open Data
maintainer_email no-reply@data.kingcounty.gov
metadata_created 2025-11-22T16:34:26.705991
metadata_modified 2025-11-22T16:34:26.705994
notes Daily summary of air quality at specified locations in King County (Nitrogen Dioxide). Air quality monitors measure concentrations of NO2 throughout the country. EPA, state, tribal and local agencies use that data to ensure that NO2 in the air is at levels that protect public health and the environment. Nationally, average NO2 concentrations have decreased substantially over the years. The charts below show national and regional trends in NO2 concentrations.
num_resources 4
num_tags 13
title EPA Air Pollutant Monitoring - Nitrogen Dioxide (NO2)