I-15 Highway Webcams

Live Traffic Cameras, Road Conditions & Weather Along U.S. Route I-15

Follow Interstate 15 from Southern California to the Canadian border with live traffic cameras, weather webcams, mountain pass views, and road condition updates. I-15 travels through California, Nevada, Arizona, Utah, Idaho, and Montana, connecting major cities, national parks, mountain passes, and some of the most scenic landscapes in the western United States.

Whether you’re heading to Las Vegas, Salt Lake City, Idaho Falls, or Glacier Country, these live I-15 webcams help you check current traffic, weather, visibility, and travel conditions before you hit the road.

I-15 Webcams by State

California I-15 Webcams

• San Diego
• Temecula
• Cajon Pass
• Victorville
• Barstow

Nevada I-15 Webcams

• Primm
• Las Vegas
• Mesquite

Arizona I-15 Webcams

• Virgin River Gorge
• Littlefield

Utah I-15 Webcams

• St. George
• Cedar City
• Beaver
• Fillmore
• Provo
• Salt Lake City
• Ogden
• Brigham City

Idaho I-15 Webcams

• Malad Summit
• Pocatello
• Blackfoot
• Idaho Falls
• Dubois
• Monida Pass

Montana I-15 Webcams

• Monida Pass
• Dillon
• Butte
• Helena
• Great Falls
• Shelby
• Sweetgrass

Where Does I-15 Run?

Interstate 15 runs approximately 1,430 miles from Southern California to the Canadian border in Montana. The route begins near San Diego and travels through California, Nevada, Arizona, Utah, Idaho, and Montana before connecting with Alberta Highway 4 in Canada. Along the way, I-15 serves major cities including Las Vegas, St. George, Salt Lake City, Pocatello, Idaho Falls, Helena, and Great Falls. It is one of the most important north-south transportation corridors in the western United States.

Scenic and Notable Sections of I-15

Southern California Desert Corridor

Travel through the Inland Empire, Cajon Pass, Victor Valley, and the Mojave Desert on one of the busiest stretches of interstate highway in the West.

Las Vegas and Southern Nevada

I-15 serves as the primary route between Southern California and Las Vegas, carrying millions of travelers each year.

Virgin River Gorge

Located in northwestern Arizona, the Virgin River Gorge is one of the most scenic stretches of interstate highway in America, featuring dramatic canyon walls and winding mountain terrain.

Utah’s Wasatch Front

From St. George to Salt Lake City and Ogden, I-15 connects the majority of Utah’s population and serves as the backbone of the state’s transportation network.

Eastern Idaho

The route passes through agricultural valleys and communities including Pocatello, Blackfoot, and Idaho Falls while providing access to Yellowstone National Park and Grand Teton National Park.

Montana’s Big Sky Country

I-15 crosses Monida Pass before continuing through Dillon, Butte, Helena, Great Falls, and Shelby on its journey to Canada.

Major Cities Along I-15

• San Diego, California
• Las Vegas, Nevada
• St. George, Utah
• Provo, Utah
• Salt Lake City, Utah
• Ogden, Utah
• Pocatello, Idaho
• Idaho Falls, Idaho
• Butte, Montana
• Helena, Montana
• Great Falls, Montana

Road Conditions and Travel Tips for I-15

Winter Travel

Winter weather can impact portions of I-15 in Utah, Idaho, and Montana. Snow, ice, blowing snow, and reduced visibility are common at higher elevations, particularly near Monida Pass and through parts of Montana and Idaho.

Spring Weather

Spring can bring rapidly changing conditions, including rain, snow, and strong winds. Mountain areas may continue to experience winter-like weather well into May.

Summer Travel

Summer is generally the busiest travel season. Expect heavy traffic near Las Vegas, Salt Lake City, national park gateways, and major recreation destinations throughout the corridor.

Why Use I-15 Webcams?

• Check live traffic conditions
• Monitor weather and visibility
• View road surface conditions
• Plan mountain pass travel
• Avoid congestion and delays
• Prepare for seasonal driving conditions

Frequently Asked Questions

What states does I-15 pass through?

I-15 travels through California, Nevada, Arizona, Utah, Idaho, and Montana.

What is the most scenic section of I-15?

Many travelers consider the Virgin River Gorge in Arizona and the mountain sections of Montana among the most scenic portions of the route.

Does I-15 stay open year-round?

Yes. Interstate 15 is maintained year-round, although weather conditions may temporarily affect travel in mountain regions.

What is the highest point on I-15?

Monida Pass on the Idaho-Montana border is the highest elevation point along Interstate 15.

About Interstate 15

Interstate 15 is one of the longest north-south highways in the western United States. Originally developed as part of the Interstate Highway System, it connects Southern California with Canada while serving major population centers, tourism destinations, freight corridors, and recreation areas throughout the West. Today, I-15 remains a critical transportation route for commerce, tourism, and everyday travel across six states.