Single metric time series for one country

GET

/api/v1/environment/co2/country/{iso3}/{metric}

Last modified:2026-05-10 09:22:39

Maintainer:Not configured

OperationId:environment_co2_country_iso3_metric

Returns a lean (year, value) series for a single metric column in the OWID CO2 bundle. The metric name must match one of the 76 column keys from the codebook exactly (e.g. co2, co2_per_capita, consumption_co2, methane, nitrous_oxide, temperature_change_from_co2, share_global_co2, cumulative_co2). Call /api/v1/environment/co2/codebook for the full column list with units and descriptions. Published under CC BY 4.0 with dual attribution - the response names the primary upstream provider for this specific column (Global Carbon Project, Jones et al., EIA, etc).

Request

Authorization

API Key

Add parameter in header

x-api-key

Example:

x-api-key: ********************

Path Params

Query Params

Header Params

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location '/api/v1/environment/co2/country/USA/co2?start_year=2000&end_year=2023' \
--header 'x-api-key: <api-key>'

Responses

🟢200

application/json

Year-value pairs for one metric plus unit, description, and per-column attribution.

Bodyapplication/json

Example

{
    "data": {
        "iso_code": "USA",
        "country": "string",
        "metric": "co2",
        "unit": "string",
        "description": "string",
        "upstream_source": "string",
        "observations": [
            {
                "year": 2022,
                "value": 0
            }
        ],
        "count": 30,
        "attribution": "string"
    },
    "meta": {
        "endpoint": "/api/v1/fred/us/cpi",
        "data_time": "2026-04-16T14:30:00Z",
        "response_time": "2026-04-16T14:30:12Z",
        "provider": "Sugra API v1.0.1",
        "source": "string",
        "fallback_used": true,
        "fallback_chain": [
            "string"
        ],
        "cached": true
    }
}

🟠401

🟠422

🟠429

🔴503

Modified at 2026-05-10 09:22:39

Full greenhouse-gas time series for one country

World aggregate greenhouse-gas time series