International Dark-Sky Association

Nonprofit or community organization

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About us

The mission of IDA is to preserve and protect the nighttime environment and our heritage of dark skies through quality outdoor lighting. IDA is a membership-based, educational, non-profit organization with members located throughout the world.

We hope to stop the adverse environmental impact on dark skies by building awareness of the issue of light pollution. We provide solutions and educate the public about the value and effectiveness of quality nighttime lighting.

Much has been accomplished in some locations, but much more needs to be done everywhere. Through quality outdoor lighting, we can succeed in preserving dark skies and in improving the nighttime environment for everyone. IDA is supportive of members' problems concerning these issues, by sharing common knowledge on a local, national, and international basis.

IDA also builds awareness of the adverse problems affecting astronomy from radio interference (RFI) and space debris.


Contact information

Government ID number: 74-2493011

Email: Log in to view email addresses.


Phone: 520/293-3198

Fax: 520/293-3192

3225 N. First Avenue, Tucson, AZ, 85719-2103, US

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