aqs_quarterly_summary_by_county
Retrieve quarterly air quality summaries for all monitoring sites in a county to compare pollution levels across locations using aggregated measurement data.
Instructions
Retrieve quarterly summary data for all air quality monitoring sites in a county. Quarterly summaries aggregate measurements by calendar quarter, providing observation counts, arithmetic means, and maximum values. Useful for comparing air quality across multiple monitoring sites within a county.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| No | Email address for API authentication. Optional if AQS_EMAIL environment variable is set. | ||
| key | No | API key for authentication. Optional if AQS_API_KEY environment variable is set. | |
| param | Yes | Parameter code (pollutant). Common codes: 44201 (Ozone), 88101 (PM2.5), 81102 (PM10), 42401 (SO2), 42101 (CO), 42602 (NO2). Up to 5 comma-separated codes allowed. | |
| bdate | Yes | Begin date in YYYYMMDD format. Must be in the same calendar year as edate. | |
| edate | Yes | End date in YYYYMMDD format. Must be in the same calendar year as bdate. | |
| state | Yes | Two-digit FIPS state code (e.g., "06" for California, "36" for New York). | |
| county | Yes | Three-digit FIPS county code (e.g., "037" for Los Angeles County). |