API archive entry · source-reported
Carbon Interface
API to calculate carbon (C02) emissions estimates for common C02 emitting activities
Other Environment APIs
These records share a directory category and are ordered by similarity of reported access facts. They are a shortlist, not proof of drop-in compatibility.
Climatiq
Calculate the environmental footprint created by a broad range of emission-generating activities
API key · HTTPS reported · CORS Yes
SustainMetrics
18,000+ GHG emission factors from DEFRA, EPA, ADEME, Ember
API key · HTTPS reported · CORS Yes
BreezoMeter Pollen
Daily Forecast pollen conditions data for a specific location
API key · HTTPS reported · CORS Unknown
Cloverly
API calculates the impact of common carbon-intensive activities in real time
API key · HTTPS reported · CORS Unknown
IQAir
Air quality and weather data
API key · HTTPS reported · CORS Unknown
OpenAQ
Open air quality data
API key · HTTPS reported · CORS Unknown
How to compare them
Coverage
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Operating cost
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Integration risk
Test auth, errors, pagination, latency, versioning, and outage behavior.
Data rights
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Source reference
This page separates source-reported facts from questions that need live provider verification.