Returns hourly surface concentrations from the CAMS European air-quality ensembl
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.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
891 msmedian answer time
$0.005listed price per call
$0.005price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://karte.halowerk.com/v1/air-quality
| Category | Everything else |
|---|---|
| Provider host | karte.halowerk.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.005 | 891 ms |
Example input (from the provider)
{
"body": {
"latitude": 45,
"longitude": 5
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$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"
}