aqs_quarterly_summary_by_state
Retrieve quarterly air quality data for all monitoring sites in a state to analyze pollution trends, compare regional measurements, and track environmental changes over time.
Instructions
Retrieve quarterly summary data for all air quality monitoring sites in a state. Quarterly summaries aggregate measurements by calendar quarter, providing observation counts, arithmetic means, and maximum values. Useful for statewide air quality analysis and comparing trends across different regions.
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). |