UV Index in California

UV radiation is forecasted to peak at 6 (High) around 14:00. Prolonged sun exposure during this window carries an increased risk of sunburn and skin damage.

Quick Action Steps

🧴 Sunscreen: Apply broad-spectrum SPF 30 or higher 15 minutes before stepping out.

🕶️ Gear up: Wear UV-blocking sunglasses, a wide-brimmed hat, and lightweight long sleeves.

🌳 Seek Shade: Limit direct sun exposure between 10:00 AM and 4:00 PM.

Guidelines aligned with World Health Organization (WHO) sun safety standards

Current UV Index in California

☀️ Current Status: 6 — High 

⏰ Peak Hours Risk: Highest intensity expected around 14:00

Unprotected skin can sustain sun damage in as little as 15–20 minutes during peak hours under current High conditions.

Recommended Actions for Today

• Best Time for Outdoor Activities: Plan exercise, beach trips, or sightseeing before 10:00 AM or after 4:00 PM to minimize exposure.

• Midday Sun Protection (10 AM – 4 PM):

🧴 Sunscreen: Apply broad-spectrum SPF 30+ to exposed skin 15 minutes before going outside; reapply every 2 hours.

🕶️ Protective Gear: Wear UV400-rated sunglasses, a wide-brimmed hat, and tight-woven clothing.

🌳 Seek Shade: Utilize covered areas during peak UV hours around 14:00.

Regional UV Index Breakdown Across California

California’s diverse topography creates dramatic UV variations across its climate zones. A single statewide average doesn't reflect local risks, making city-specific UV tracking essential for outdoor planning:

• Coastal Regions (Los Angeles, San Diego, San Francisco): Marine layers and coastal fog ("May Gray" / "June Gloom") often filter morning sunlight. However, up to 80% of UV rays penetrate thin cloud cover, and ocean water reflects an additional 10–15% of UV radiation onto your skin.

• Inland Valleys (Sacramento, Fresno): High temperatures combined with persistent clear skies create consistently elevated daily UV levels from late spring through autumn.

• Mountain & Desert Zones (Lake Tahoe, Joshua Tree, Death Valley): UV intensity increases by 10–12% for every 1,000 meters (3,280 ft) of elevation. Snow and desert sand can reflect up to 80% and 15% of UV rays respectively, significantly accelerating sunburn risk even in cooler temperatures.

Expert Sun Protection Checklist

1. Apply Broad-Spectrum Sunscreen: Use SPF 30+ covering all exposed skin 15 minutes before outdoor exposure; reapply every 2 hours or after swimming/sweating.
2. Wear Protective Gear: Choose UV400-rated sunglasses and wide-brimmed hats.
3. Avoid Peak Hours: Limit direct sun exposure between 10:00 AM and 4:00 PM.

Check Local UV Forecasts in Major California Cities

• Los Angeles UV Index
• San Diego UV Index
• San Francisco UV Index
• Sacramento UV Index
• Fresno UV Index