SpotWave
Day-ahead electricity prices for 40+ European market zones, incl. taxes and VAT
Environment · No auth · HTTPS
Environment APIs
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Ordered by reported HTTPS, CORS support, no-auth access, then changed/observed facts. Access signals are not a popularity or quality score.
Calendrier Tempo
French EDF Tempo tariff: today's and tomorrow's colour, kWh prices and 15-day colour forecasts
Environment · No auth · HTTPS
Sähkön hinta nyt
Finnish and Nordic day-ahead electricity spot prices (15-minute), cheapest hours
Environment · No auth · HTTPS
GridVigil
Pressure scores, demand, generation mix and alerts for the 10 major U.S. power grids
Environment · No auth · HTTPS
Open-Meteo
Free weather API for non-commercial use
Environment · No auth · HTTPS
DC Hub
Live data on data-center facilities, power markets, grid telemetry, and fiber infrastructure
Environment · No auth · HTTPS
Open-Meteo Marine
Ocean wave height, swell, sea temperature and marine weather data
Environment · No auth · HTTPS
ZipCheckup
U.S. drinking water quality data by ZIP code from EPA and 20+ federal sources
Environment · No auth · HTTPS
Open-Meteo
Free weather API for non-commercial use
Environment · No auth · HTTPS
gridcarbon
Hourly grid carbon intensity in gCO2eq/kWh for 45 zones in Europe, the US and Great Britain
Environment · No auth · HTTPS
kanari
Real-time worldwide wildfire detections, water bomber tracking and open fire archive
Environment · No auth · HTTPS
Open-Meteo
Free weather API for non-commercial use
Environment · No auth · HTTPS
WattFigure
US electricity rates by state, with appliance and EV charging running costs
Environment · No auth · HTTPS
sensor.community
Community air quality sensor network data worldwide
Environment · API key · HTTPS
AirNow
US EPA air quality data and forecasts
Environment · API key · HTTPS
GridHub
Live wholesale electricity prices and demand across 25 grid zones
Environment · API key · HTTPS
Carbon Interface
API to calculate carbon (C02) emissions estimates for common C02 emitting activities
Environment · API key · HTTPS
Climatiq
Calculate the environmental footprint created by a broad range of emission-generating activities
Environment · API key · HTTPS
SustainMetrics
18,000+ GHG emission factors from DEFRA, EPA, ADEME, Ember
Environment · API key · HTTPS
SoilPoint
US soil properties at a lat/lon from USDA SSURGO: texture, drainage, pH, organic matter
Environment · No auth · HTTPS
PVGIS
EU solar radiation and photovoltaic performance estimates
Environment · No auth · HTTPS
CO2 Offset
API calculates and validates the carbon footprint
Environment · No auth · HTTPS
Danish data service Energi
Open energy data from Energinet to society
Environment · No auth · HTTPS
Luchtmeetnet
Predicted and actual air quality components for The Netherlands (RIVM)
Environment · No auth · HTTPS