• With the help of our global community, we have:
  • 5k Deployed
  • 102 Countries
  • 5k Contributing
  • 66k Daily

Safecast revolutionized citizen science Popular Mechanics

Air Quality

Safecast is currently building out a network of sensors to monitor particulate matter in sizes PM1.0, PM2.5, PM10.


Safecast maintains the largest open dataset of background radiation measurements ever collected. Over 150 million readings to date and growing daily.


All data collected by Safecast is released under a CC0 public domain designation. Anyone is free to use it for free with no licensing restrictions.

Safecast has been covered by:

Since 2011, Safecast has collected and published


environmental measurements into the public domain.

Safecast data and devices are used by:

Safecast Code

  1. Always Open
  2. Always Improving
  3. Always Encouraging
  4. Always Publishing
  5. Always Questioning
  6. Always Uncompromising
  7. Always On
  8. Always Creating
  9. Always Objective
  10. Always Independent

We check ourselves against this list and encourage others to do the same.