SiteCheck Company Records

US EPA Air Quality System certified monitor data for a county: daily values per monitor (mean, daily max, AQI, method, site) or annual summaries (mean, 98th/99th percentiles, exceedance counts) for PM2.5, PM10, ozone, NO2, SO2, CO or lead. County by name or FIPS code. Official quality-assured data, published about six months after measurement.

Open endpoint ↗

Price per call: $0.002
Chain: Base
Method: GET
Paid calls · 30 days: 2

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://api.companyrecords-api.workers.dev/api/gov/epa-aqs-air-quality", { method: "GET" });
console.log(await res.json());

https://api.companyrecords-api.workers.dev/api/gov/epa-aqs-air-quality