Returns hourly surface concentrations from the CAMS European air-quality ensemble for a po
Returns hourly surface concentrations from the CAMS European air-quality ensemble for a point in the cached DACH and Central Europe area. Available pollutants are CO, NO2, NO, O3, PM2.5, PM10 and SO2. Values come from the nearest 0.1 degree model cell and are labelled as a regional forecast rather than a street-level sensor reading. The local cutout is refreshed independently of paid calls, so Copernicus processing latency is not passed to the caller.
5000 (raw units)
price
1
calls / 30d
1
unique payers
2026-08-30
updated
Provider
karte.halowerk.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "5000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"latitude": 45,
"longitude": 5
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"hours": {
"default": 24,
"description": "Number of hourly forecast values.",
"maximum": 48,
"minimum": 1,
"type": "integer"
},
"latitude": {
"description": "Latitude inside the cached DACH and Central Europe area.",
"maximum": 56,
"minimum": 45,
"type": "number"
},
"longitude": {
"description": "Longitude inside the cached DACH and Central Europe area.",
"maximum": 18,
"minimum": 5,
"type": "number"
},
"pollutants": {
"description": "Optional subset; default returns all seven pollutants.",
"items": {
"enum": [
"co",
"no2",
"no",
"o3",
"pm2_5",
"pm10",
"so2"
],
"type": "string"
},
"maxItems": 7,
"minItems": 1,
"type": "array",
"uniqueItems": true
}
},
"required": [
"latitude",
"longitude"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://karte.halowerk.com/v1/air-quality" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://karte.halowerk.com/v1/air-quality");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://karte.halowerk.com/v1/air-quality")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/15408.json, and this resource appears in /discovery/resources and /discovery/search.