What is light pollution?

 Light pollution is the brightening of the night sky caused by man-made sources, which has a disruptive effect on natural cycles and inhibits the observation of stars and planets.

When does light pollution occur?

 Light pollution occurs when:

  • Too much lights Are being used when and where they are not necessary.
  • Lights are aimed improperly.
  • Nobody is there to use it.

The inappropriate or excessive use of artificial light can have serious environmental consequences for humans, wildlife, and our climate.

 Types of light pollution include: 

  • Light trespass: Light falling where it is not intended or needed.
  • Skyglow: Brightening of the night sky that can be seen from miles away.
  • Glare: Excessive brightness that causes visual discomfort.
  • Clutter: Bright, confusing, and excessive groupings of light sources.

You can help!

The good news is that light pollution, unlike many other forms of pollution, is reversible and each one of us can make a difference! Just being aware that light pollution is a problem is not enough; we need action. You can start by minimizing the light from your own home at night. You can do this by following these simple steps:

  1. Only use lighting when and where it’s needed.
  2. Minimize the use of lights and turn off lights when not needed.
  3. If safety is a concern, install motion detector lights and automated timers.
  4. Properly shield all outdoor lights to face downward.

Photo: Todd Carlson