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Sunnyvale, CA Traffic and Road Conditions

Sunnyvale Traffic Map

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Traffic flow, road conditions and incident information
Traffic Flow Lines
Red/White dashed lines indicate a closed road.
Grey/White dashed lines indicate road work.
Red lines indicate heavy traffic flow.
Yellow/Orange lines indicate medium traffic flow.
Green lines indicate normal traffic flow.
Black lines or areas without visible traffic flow may indicate a road closure, limited vehicle activity, or a roadway where traffic flow is not currently monitored.
Traffic Incidents
Each map icon represents a traffic event or incident, such as road construction, a road closure (red circle with a white dash), or an accident.
Map Tip:If you are unable to pan the map, press here to move focus away from the map, then try again.
Please note:During extreme weather, flooding, accidents or other major incidents, traffic in Sunnyvale, CA may still appear as a green line even when individual lanes or an entire roadway is closed.
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Traffic Alert

Map and Alerts Usage Tips and FAQs

Sunnyvale Traffic Alerts

Hazard 1.3 mi

Honda Clarity Partially Blocking Transition

Northbound 101 to westbound 237 has a silver Honda Clarity partially blocking the transition. About 10 vehicles are stopped behind it, and a tow is en route.

0 Us101 N Sr237 W Con Updated 2:49 AM
Hazard 8.3 mi

Loose gravel and rocks on SB 87

SB 87 just south of Alma Ave has loose gravel and rocks blocking lanes 1 to 3. Drive carefully in this area.

Sr87 S / Alma Ave Ofr Updated 2:55 AM
Collision 9.9 mi

Multi-Vehicle Collision on I-880 South

I-880 South is blocked in lanes 1 and 2 due to a multi-vehicle collision involving a black pickup truck and a blue Chevrolet truck. One vehicle reportedly fled the scene.

I880 S / Mowry Ave Ofr Updated 3:29 AM
Collision 11.9 mi

Traffic collision reported on I880

A collision involving two vehicles has been reported on I880 South just south of SR84. Details on injuries are currently unknown.

I880 S Sr84 W Con / Sr84 W Updated 3:20 AM
Construction 13.8 mi

Construction affecting lanes on SR17 N

The second lane on northbound SR17 is closed near Bear Creek Rd due to ongoing construction. Expect delays in the area.

SR17 N / BEAR CREEK RD OFR Updated 3:24 AM
Fire 21.7 mi

Report of fire on I880

There is a report of debris on the right-hand side of I880 South near Washington Ave. Fire services have been dispatched.

I880 S / Washington Ave Onr Updated 3:20 AM
Collision 28.3 mi

Traffic collision on US101 N near Oyster Point Blvd

A dark sedan is blocking the third lane on northbound US101 near Oyster Point Blvd. Emergency services are on the way.

Us101 N / Oyster Point Blvd Ofr Updated 3:24 AM
Hazard 29.9 mi

Deer Reported on Cliff Drive

A deer has been spotted on Cliff Drive near Elva Drive, but no vehicles are reported stopped in the area. Drive carefully if you're nearby.

Cliff Dr / Elva Dr Updated 2:48 AM
Collision 34.1 mi

Collision on SR1 South

A vehicle has gone off the roadway on southbound SR1 near the airport. No vehicle description is available at this time, and emergency services are responding.

Sr1 S / Airport Updated 3:25 AM
Hazard 34.2 mi

Vehicle blocking lane on US101 S

A vehicle with a broken front axle is blocking the #1 lane on southbound US101 at the Van Ness on-ramp. Towing has been requested.

US101 S / S VAN NESS AVE ONR Updated 3:10 AM
Collision 34.2 mi

Traffic collision at I80 toll plaza

A collision involving a black Tesla and a white SUV is causing all lanes to temporarily stop at the I80 East toll plaza. Emergency services are on the scene.

I80 E / Sfobb Toll Plaza Ofr Updated 3:20 AM
Fire 39.1 mi

Brush Fire on I-80 West near Central Ave

A brush fire was reported on I-80 West just before Central Ave, but it is now out. No traffic impacts reported.

I80 W / Central Ave Ofr Updated 3:29 AM
California State Official Traffic Resources:
CA DOT | Caltrans QuickMap | CHP Traffic Full Site | CHP Traffic Mobile Site
sources: Caltrans, CHP, Twitter
Alerts Last Updated: Fri, Sep 18th 02:35:02 AM

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National Traffic Forecast

 

Flash Flooding and Record Highs Impacting Roads and Travel for 09-17 to 09-19
Updated Thu Sep 17th 2026, 5:07am PDT
Southwest & Great Basin Area
Drivers in the Southwest should be on high alert for sudden heavy rain and potential flash flooding especially along the I-40 and I-10 corridors. Keep an eye out for ponding water which can lead to unexpected road closures.
Southern Rockies
Commuters traveling through the Southern Rockies, including highways like I-25, should prepare for showers and possible thunderstorms. The risk of flash flooding is present, so please drive carefully and be mindful of road closures.
Northern Plains & Upper Midwest
As we head into Friday and Saturday, heavy rain is expected to develop along the I-94 and I-90 corridors. Be prepared for potential flash flooding, which could lead to traffic delays and detours.
Central Plains & Midwest
The cooler air makes its way into the area, but watch out for cooler temperatures that could impact tire pressure. Routes like the I-70 and I-80 should see less severe weather impacts.
Southern Plains & Mississippi Valley
Travelers in this region should prepare for intense heat, especially in areas along I-35, I-20, and I-55. Ensure your vehicle's air conditioning is working well and stay hydrated.
Florida
Scattered thunderstorms are expected primarily on State Route 528 and US-1. While heavy rain is less likely, be aware of slippery roads and drive with caution.

This live traffic and road conditions report is relevant for ZIP codes from 94085 through 94090, accurately covering all areas within Sunnyvale, CA.

Currently

Clear 56°F
30.09 inHg.
Barometer
83%
Humidity
NW 3.6 mph
Wind
Clear
Weather Report

More Local Information

Sunnyvale, CA Weather
Sunnyvale, CA 5-Day Forecast
Sunnyvale, CA Radar Maps
Sunnyvale, CA Past Weather
Sunnyvale, CA Daily Charts

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National Outlook

More Flash Flooding Expected in the Southwest and Plains: 09-17 to 09-19

Thu Sep 17th 2026, 5:06am PDT
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