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

High-rise apartment buildings in Waikiki, Hawaii with steep green mountains in background.

Study: Maui’s Plan to Convert Vacation Rentals to Long-Term Housing Could Cause Nearly $1 Billion Economic Loss

The plan would reduce visitor accommodation by 25,% resulting in 1,900 jobs lost.

April 6, 2025 - Honolulu Civil Beat

Two yellow and white Dallas Area Rapid Transit light rail streetcars at station in Dallas, Texas.

North Texas Transit Leaders Tout Benefits of TOD for Growing Region

At a summit focused on transit-oriented development, policymakers discussed how North Texas’ expanded light rail system can serve as a tool for economic growth.

April 3, 2025 - KERA News

Rusty abandoned oil well and equipment with prickly pear cactus next to it in West Texas.

Using Old Oil and Gas Wells for Green Energy Storage

Penn State researchers have found that repurposing abandoned oil and gas wells for geothermal-assisted compressed-air energy storage can boost efficiency, reduce environmental risks, and support clean energy and job transitions.

March 31, 2025 - Pennsylvania State University

Sign for Palisades Recreation Center in Pacific Palisades, Los Angeles, California.

Private Donations Propel Early Restoration of Palisades Playground

Los Angeles has secured over $1.3 million in private funding to restore the Pacific Palisades playground months ahead of schedule, creating a modern, accessible space that supports community healing after recent wildfires.

7 seconds ago - Los Angeles Mayor

Aerial view of oil field in California with pumpjacks at sunset.

From Blight to Benefit: Early Results From California’s Equitable Cleanup Program

The Equitable Community Revitalization Grant (ECRG) program is reshaping brownfield redevelopment by prioritizing projects in low-income and environmental justice communities, emphasizing equity, transparency, and community benefits.

1 hour ago - The Othering & Belonging Institute

"Welcome to fabulous Las Vegas Nevada" sign with mottled shade from palm tree.

Planting Relief: Tackling Las Vegas Heat One Tree at a Time

Nevada Plants, a Las Vegas-based nonprofit, is combating the city’s extreme urban heat by giving away trees to residents in underserved neighborhoods, promoting shade, sustainability, and community health.

2 hours ago - KTNV