Category
Environment APIs
30 APIs, 15 of them with no auth listed. Each one links to its own page with auth, HTTPS, CORS and the official docs.
APIs30
No auth listed50%15 of 30
HTTPS93%
CORS enabled40%
Docs link reachable83%at the last weekly check
Quick starts
No key, HTTPS and CORS, and the docs link answered at the last check: call these from a web page in minutes.
GridVigilPressure scores, demand, generation mix and alerts for the 10 major U.S. power grids
Open-MeteoFree weather API for non-commercial use
Sähkön hinta nytFinnish and Nordic day-ahead electricity spot prices (15-minute), cheapest hours- kanariReal-time worldwide wildfire detections, water bomber tracking and open fire archive
- WattFigureUS electricity rates by state, with appliance and EV charging running costs
All Environment APIs
- AirNowUS EPA air quality data and forecastsapiKeyCORS
BreezoMeter PollenDaily Forecast pollen conditions data for a specific locationapiKey
Carbon InterfaceAPI to calculate carbon (C02) emissions estimates for common C02 emitting activitiesapiKeyCORS
ClimatiqCalculate the environmental footprint created by a broad range of emission-generating activitiesapiKeyCORS
CloverlyAPI calculates the impact of common carbon-intensive activities in real timeapiKeyLink down- CO2 OffsetAPI calculates and validates the carbon footprintNo auth
Danish data service EnergiOpen energy data from Energinet to societyNo auth
EIA Open DataUS energy statistics: electricity, petroleum, gasapiKey- GridHubLive wholesale electricity prices and demand across 25 grid zonesapiKeyCORS
- GridVigilPressure scores, demand, generation mix and alerts for the 10 major U.S. power gridsNo authCORS
GrünstromIndexGreen Power Index for Germany (Grünstromindex/GSI)No authCORS- IQAirAir quality and weather dataapiKey
- kanariReal-time worldwide wildfire detections, water bomber tracking and open fire archiveNo authCORS
- LuchtmeetnetPredicted and actual air quality components for The Netherlands (RIVM)No auth
- MyceliumCorporate carbon emissions disclosures (scope 1, 2 and 3), company-reported and estimatedapiKeyLink down
- National Grid ESOOpen data from Great Britain’s Electricity System OperatorNo authLink down
- Open-MeteoFree weather API for non-commercial useNo authCORS
OpenAQOpen air quality dataapiKey
PM2.5 Open Data PortalOpen low-cost PM2.5 sensor dataNo auth- PM25.inAir quality of ChinaapiKeyLink down
PVGISEU solar radiation and photovoltaic performance estimatesNo auth- PVWattsEnergy production photovoltaic (PV) energy systemsapiKeyLink down
- Sähkön hinta nytFinnish and Nordic day-ahead electricity spot prices (15-minute), cheapest hoursNo authCORS
sensor.communityCommunity air quality sensor network data worldwideUser-AgentCORS
SolematicaCompare Italian solar (photovoltaic) installer offers, energy prices (PUN/ARERA) and satellite roof dataNo auth- Srp EnergyHourly usage energy report for Srp customersapiKey
SustainMetrics18,000+ GHG emission factors from DEFRA, EPA, ADEME, EmberapiKeyCORS
UK Carbon IntensityThe Official Carbon Intensity API for Great Britain developed by National GridNo auth- WattFigureUS electricity rates by state, with appliance and EV charging running costsNo authCORS
- Website CarbonAPI to estimate the carbon footprint of loading web pagesNo auth