Free Environment & Earth APIs

Global real-time air quality index (AQI) and pollution sensor datasets

Global community air quality open environmental data platform

Calculates carbon emissions for flights, vehicle trips, electricity, and shipping

Comprehensive greenhouse gas emission calculations and climate metrics engine

Non-profit open registry of global electric vehicle (EV) charging stations

USGS real-time global earthquake feeds, magnitude, and seismic data

USGS national real-time water streamflow, drought, and hydrological telemetry

Global air quality data aggregating PM2.5, PM10, ozone, and AQI readings

Real-time hyper-local air quality sensor network tracking PM2.5 particulate

The Air Quality Index (AQI) API provides real-time air quality data, including the AQI and specific pollutant concentrations (such as PM2.5, PM10, CO, NO2, SO2, and O3) for various locations around the world. This API helps developers integrate air quality monitoring features into applications, enabling users to make informed decisions regarding their environment and health.

Official API for Carbon Intensity in Great Britain provided by National Grid. Allows access to current and historical carbon intensity data for different regions and time periods.

The Water Quality Archive provides comprehensive data on water quality measurements from various sampling points across England including coastal, river, lake, and groundwater sources. It supports compliance assessment, pollution investigation, and environmental monitoring with data available dating back to 2000.

Calculates website carbon emissions per page view using real-time tests. Provides endpoints for testing and manual calculations.