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2s.io weather air-quality
https://2s.io/api/weather/air-quality
payable
Current air quality for any coordinate worldwide. Pass lat + lon. Returns the US AQI (+ category Good/Moderate/Unhealthy…), the European AQI, and pollutant concentrations: PM2.5, PM10, ozone, nitrogen dioxide, sulphur dioxide, carbon monoxide. Source: Open-Meteo / CAMS (keyless).
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.003
- Network
- base
- Pay to
- 0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 77 ms
- Payment options
- 2 usable of 2
- Last checked
- 2026-08-10T09:17:34.655Z (1d ago)
- Category
- data
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2F2s.io%2Fapi%2Fweather%2Fair-quality"