Preserving LA’s Dark Skies

Learn about the importance of dark skies for the health and enjoyment of individuals and wildlife, and how L.A. County's Rural Outdoor Lighting District is helping to reduce light pollution.

1 minute read

April 1, 2024, 10:00 AM PDT

By Clement Lau


Joshua tree sillhouetted against starry night sky in the Mojave Desert.

Joshua tree sillhouetted against a starry sky in the Mojave Desert. | mandritoiu / Adobe Stock

The dark sky movement seeks to reduce light pollution, generally defined as the unwanted, inappropriate, or excessive use of artificial light. The benefits of reducing light pollution include more stars being visible at night, reduced effects of electric lighting on the environment, improved well-being, health, and safety of people and wildlife, and decreased energy usage.

In Los Angeles County, the Rural Outdoor Lighting District (ROLD) promotes and maintains dark skies for the health and enjoyment of individuals and wildlife. Specifically, ROLD applies to rural unincorporated areas and includes requirements such as shielding and angling lights to avoid light pollution and light spilling onto adjacent properties. Individuals may also adopt lighting best practices to reduce light pollution in communities. For example, they can take actions such as turning exterior lights off by 10:00 pm, using motion sensors for lights at night, opting for subdued warm lighting, and only using the lights that they really need.

For more information, please visit this webpage created and maintained by the L.A. County Department of Regional Planning which includes resources such as brochures in multiple languages about the ROLD and videos explaining the importance of dark skies and how the ROLD helps to reduce light pollution. 

Friday, March 1, 2024 in Los Angeles County Department of Regional Planning

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Close-up of park ranger in green jacket and khaki hat looking out at Bryce Canyon National Park red rock formations.

National Parks Layoffs Will Cause Communities to Lose Billions

Thousands of essential park workers were laid off this week, just before the busy spring break season.

February 18, 2025 - National Parks Traveler

Paved walking path next to canal in The Woodlands, Texas with office buildings in background.

Retro-silient?: America’s First “Eco-burb,” The Woodlands Turns 50

A master-planned community north of Houston offers lessons on green infrastructure and resilient design, but falls short of its founder’s lofty affordability and walkability goals.

February 19, 2025 - Greg Flisram

Small rural USPS post office in manufactured one-story grey building with American flag in front.

Delivering for America Plan Will Downgrade Mail Service in at Least 49.5 Percent of Zip Codes

Republican and Democrat lawmakers criticize the plan for its disproportionate negative impact on rural communities.

February 12, 2025 - Cowboy State Daily

Chicago

Test News Post 1

This is a summary

April 8 - 2TheAdvocate.com

test alt text

Test News Headline 46

Test for the image on the front page.

March 5 - Cleantech blog

Military humvee driving through gate at Fort Indiantown Gap Natl Guard training center in Pennsylvania surrounded by winter trees and dead leaves.

Balancing Bombs and Butterflies: How the National Guard Protects a Rare Species

The National Guard at Fort Indiantown Gap uses GIS technology and land management strategies to balance military training with conservation efforts, ensuring the survival of the rare eastern regal fritillary butterfly.

February 24 - Esri Blog