About Carbon Sky Index
Transparency in aviation emissions data for a more sustainable future.
Our Mission
Aviation represents one of the most carbon-intensive forms of transportation, yet emissions data remains largely opaque to the public. Carbon Sky Index breaks down these barriers by providing transparent, accessible data on private jet and commercial aviation emissions. We believe that accountability begins with visibility, and that informed citizens can drive meaningful change in how we approach aviation sustainability.
What Is Carbon Sky Index?
Carbon Sky Index is a public accountability platform that tracks private-jet flights, calculates and reports their CO₂ emissions, and makes outsized footprints and ownership links, Transparent.
Polluter Leaderboards
Rankings of highest-emission aircraft and operators
Tail Number Lookup
Search specific aircraft by registration number
Emissions Tracking
Real-time monitoring of carbon footprint data
Owner Reports
Detailed emissions profiles by aircraft ownership
Who Built This?
Carbon Sky Index was created by a team of independent developers, data scientists, andclimate advocates committed to environmental transparency.
George Dean
CEO & Founder
Impact So Far
12K+
Flights Tracked
8.5K
Emissions Reports
45K
Data Downloads
Monthly Tracking Growth
Data from the last 12 months
Core Values
Neutrality
We present data without bias, letting the numbers speak for themselves.
Transparency
All our methodology and data sources are openly documented.
Accountability
We believe those with outsized impacts should be held responsible.
Public Access
We believe emissions data should be freely available to all.
How to Get Involved
Press Inquiries
Get quotes, data, and interviews from our team.
Submit Flight Tips
Report flight sightings or routes - anonymous tips welcome.
Share on Social
Share rankings and jet profiles to raise awareness.
Support Development
Contribute code or funding to improve CSI tools.