aqs_list_counties
Retrieve county names and FIPS codes for a specific state to enable county-level air quality data queries through the EPA AQS API.
Instructions
Get a list of counties within a state with their 3-digit FIPS codes. Use this to look up county codes for county-level AQS API queries. Example: Los Angeles County, CA = "037", Harris County, TX = "201".
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| No | Registered email address for AQS API. Optional if AQS_EMAIL env var is set. | ||
| key | No | AQS API key. Optional if AQS_API_KEY env var is set. | |
| state | Yes | 2-digit FIPS state code (e.g., "06" for California, "48" for Texas). |