US EPA Air Quality System certified monitor data for a county: daily values per ...
https://api.companyrecords-api.workers.dev/api/gov/epa-aqs-air-qualityOverview
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.
Protocol
x402
Price
$0.0020
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
SiteCheck Company Records
Source
bazaar
Indexed
2026-10-23 19:27:15
Health
Status
healthy
Latency (p50)
403ms
Uptime (30d)
100.0%
Reliability Score
95/100
Last Checked
2026-10-31 07:18:00
Last Healthy
2026-10-31 07:18:00
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"county": "Los Angeles",
"from": "2026-04-01",
"pollutant": "pm25",
"state": "CA",
"to": "2026-04-03"
},
"type": "http"
}
Output Schema
{
"example": {
"checkedAt": "2026-10-23T09:37:09.303Z",
"count": 100,
"county": "Los Angeles",
"countyFips": "06037",
"from": "2026-04-01",
"mode": "daily",
"note": null,
"parameterCode": "88101",
"pollutant": "PM2.5",
"rows": [
{
"aqi": 28,
"city": "Compton",
"date": "2026-04-01",
"latitude": 33.901389,
"longitude": -118.205,
"max": 5.1,
"maxHour": 0,
"mean": 5.1,
"method": "R & P Model 2025 PM-2.5 Sequential Air Sampler w/VSCC - Gravimetric",
"poc": 1,
"sampleDuration": "24 HOUR",
"site": "Compton",
"siteNumber": "1302",
"standard": "PM25 24-hour 2006",
"units": "Micrograms/cubic meter (LC)"
},
{
"aqi": 28,
"city": "Compton",
"date": "2026-04-01",
"latitude": 33.901389,
"longitude": -118.205,
"max": 5.1,
"maxHour": 0,
"mean": 5.1,
"method": "R & P Model 2025 PM-2.5 Sequential Air Sampler w/VSCC - Gravimetric",
"poc": 1,
"sampleDuration": "24 HOUR",
"site": "Compton",
"siteNumber": "1302",
"standard": "PM25 Annual 2006",
"units": "Micrograms/cubic meter (LC)"
}
],
"source": "US EPA Air Quality System (aqs.epa.gov)",
"state": "CA",
"to": "2026-04-03",
"total": 158
},
"type": "json"
}