airdata.dev
Sources and licenses
The data keeps its source's license. Credit each source with the text given here.
Every dataset on this site may be used commercially.
| Source | License | Commercial use | Datasets |
|---|---|---|---|
| US EPA | US Government work | Allowed | 1 |
| US EPA (AirData, AirNow) and the AirNow partner agencies | US Government work + AirNow Data Exchange Guidelines | Allowed | 1 |
EPA AirData annual AQI by county
- Source
- EPA AirData annual AQI by county
- Publisher
- US EPA
- License
- US Government work (public domain in the United States) (
LicenseRef-US-Government-Work) - Commercial use
- Allowed
Credit the source with this exact text:
US Environmental Protection Agency. Air Quality System Data Mart [internet database] available via https://www.epa.gov/outdoor-air-quality-data. Accessed on this version's retrieval date.
Used by: Yearly air quality summary by county
EPA AirData daily AQI by county (validated) and EPA AirNow daily data files (preliminary)
- Source
- EPA AirData daily AQI by county (validated) and EPA AirNow daily data files (preliminary)
- Publisher
- US EPA (AirData, AirNow) and the AirNow partner agencies
- License
- US Government work (public domain in the United States) and AirNow Data Exchange Guidelines (
LicenseRef-US-Government-Work AND LicenseRef-AirNow-Data-Exchange-Guidelines) - Commercial use
- Allowed
Credit the source with this exact text:
Validated data: US Environmental Protection Agency. Air Quality System Data Mart [internet database] available via https://www.epa.gov/outdoor-air-quality-data. Accessed on this version's retrieval date. Preliminary data (validated: false): courtesy of the federal, state, local and tribal air quality agencies that own the data (https://www.airnow.gov/partners/) and the EPA AirNow program. These data are preliminary: not fully verified or validated, and subject to change. Preliminary county AQI values are derived by airdata.dev as the highest site AQI in the county; site values are as received from AirNow.
Used by: Daily air quality index by county
Place names and codes
Country, state and county ids and names come from a shared location registry built from these sources:
- U.S. Census Bureau, 2024 Gazetteer Files: counties Public domain (U.S. Government work)
- U.S. Census Bureau, state and state-equivalent FIPS codes Public domain (U.S. Government work)
- Unicode CLDR 49.0.0: English territory names and ISO 3166 code mappings Unicode License v3