Today's UV Index

The US Environmetal Protection Agency has launched their daily Ultra Violet Index website, where you can search for your zip code's daily UV Index rating. Tomorrow's Los Angeles UV Index rating is 9: "Try to avoid the sun between 11 a.m. and 4 p.m. Otherwise, seek shade, cover up, wear a hat and sunglasses, and use sunscreen. " The UV Index is computed using forecasted ozone levels, a computer model that relates ozone levels to UV incidence (incoming radiation level) on the ground, forecasted cloud amounts, and the elevation of the forecast cities.

1 minute read

June 8, 2004, 8:27 PM PDT

By Chris Steins @planetizen


The US Environmetal Protection Agency has launched their daily Ultra Violet Index website, where you can search for your zip code's daily UV Index rating.



Tomorrow's Los Angeles UV Index rating is 9: "Try to avoid the sun between 11 a.m. and 4 p.m. Otherwise, seek shade, cover up, wear a hat and sunglasses, and use sunscreen. "



The UV Index is computed using forecasted ozone levels, a computer model that relates ozone levels to UV incidence (incoming radiation level) on the ground, forecasted cloud amounts, and the elevation of the forecast cities.


Chris Steins

Chris Stines is Planetizen's former Editor and the founder of Urban Insight, a leading digital agency. Chris has 25 years of experience in technology consulting and urban planning and has served as a consultant to public sector state, county, and local agencies, Fortune 500 private firms, educational institutions, and nonprofit organizations.

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

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

June 11, 2025 - Diana Ionescu

Rendering of Shirley Chisholm Village four-story housing development with person biking in front.

San Francisco's School District Spent $105M To Build Affordable Housing for Teachers — And That's Just the Beginning

SFUSD joins a growing list of school districts using their land holdings to address housing affordability challenges faced by their own employees.

June 8, 2025 - Fast Company

Yellow single-seat Japanese electric vehicle drivign down road.

The Tiny, Adorable $7,000 Car Turning Japan Onto EVs

The single seat Mibot charges from a regular plug as quickly as an iPad, and is about half the price of an average EV.

June 6, 2025 - PC Magazine

White Waymo autonomous car driving fast down city street with blurred background at night.

Seattle's Plan for Adopting Driverless Cars

Equity, safety, accessibility and affordability are front of mind as the city prepares for robotaxis and other autonomous vehicles.

June 16 - Smart Cities Dive

Two small wooden one-story homes in Florida with floodwaters at their doors.

As Trump Phases Out FEMA, Is It Time to Flee the Floodplains?

With less federal funding available for disaster relief efforts, the need to relocate at-risk communities is more urgent than ever.

June 16 - Governing

People riding bicycles on separated bike trail.

With Protected Lanes, 460% More People Commute by Bike

For those needing more ammo, more data proving what we already knew is here.

June 16 - UNM News