Collision
2.7 mi
Minor injury collision on SR78 W
SR78 West at Nordahl is experiencing a minor injury collision involving two vehicles. Emergency services are on the scene, and a tow truck is en route.
San Marcos, CA Traffic and Road Conditions
San Marcos Traffic Map
Want to See More Local Traffic Detail? Choose live Map, toggle Flow or Alerts, then zoom in closer to find road conditions, traffic flow, and incidents.
Tips
- Click or touch the map to move in different directions.
- If you do not see any markers on the map, try zooming in one or two levels using "+" on the top left side. However, they are not always available.
- Click an incident icon on the map to get more information.
FAQs
Q) How often is the map updated?
A) The traffic flow is updated at loadtime and upon movement outside the initial map view, or upon refresh of the page. Any incident markers are checked for updates approximately every 5-10 minutes, but you need to reload the page to load any new updates; the data provided may still be the same status/view as before. Information shown is as only reliable as how it is reported to us.
Q) The roads are backed up or closed, but the map does not show the reason why, what's up with that?A) Municipal traffic monitors or GPS trackers may not be available, could be offline, or reports and alerts are not syndicated to media outside of the area to use on the map. This is especially true for rural areas. You are encouraged to leave a road conditions report to help others.
Q) I see traffic alerts in the box below for the state, but they aren't related to the area I'm in? A) We attempt to display alerts as specific to the area as possible, however in some cases the data we receive will only allow us to provide it by county or even statewide.
Q) Are you an official source of traffic information? A) We are not an official source of traffic or real-time data. We have contracts and licenses to display certain up-to-date information that comes direct from some DOTs in various states, and the traffic flow on the maps is provided by TomTom or other map platforms. However, the data shown here should only be used for light informational and reference purposes and not to make critical decisions. Your safest option on the web is to use your official state-run traffic website, or to call the DOT traffic line for your state, local authorities, or the state's 511 number if available.
San Marcos Traffic Alerts
Collision
3.0 mi
Three-vehicle collision on SR 78 in Oceanside
Westbound SR 78 at Nordahl involves a green Honda Civic, a white unknown sedan, and a dark green Toyota truck. One vehicle is reported slow in the left lane.
Hazard
4.3 mi
Debris on I15 South near Deer Springs
A 2x4 is reported in the right two lanes on I15 South at Deer Springs. Use caution in this area.
Maintenance
5.9 mi
Maintenance at La Tortuga Dr in Oceanside
Maintenance units are on scene at La Tortuga Drive. No significant traffic impacts reported.
Hazard
6.1 mi
Traffic Hazard on Sr78 E at Melrose
Eastbound SR-78 at Melrose is also reporting furniture and debris in the slow lanes, with a box truck and SUV on the right-hand shoulder. Be careful in this area.
Hazard
8.5 mi
Traffic hazard on I5 North
A white sedan is partially blocking the slow lane and right-hand shoulder on I5 North near Poinsettia South. Drive carefully in this area.
Hazard
9.8 mi
Traffic hazard on I-5 South at Carlsbad Village
Another report of a traffic hazard on I-5 South at Carlsbad Village. Emergency services are responding.
Collision
12.8 mi
Traffic collision reported in Oceanside
A traffic collision has occurred at Eagle Way and Grace Ln. Details on injuries are currently unknown.
Hazard
17.6 mi
Traffic Hazard on SR67 in El Cajon
No specific details are available, but a traffic hazard has been reported on SR67 at Scripps Poway Parkway.
Collision
23.4 mi
Collision on I15 South near Aero So
Both vehicles, a silver Ford Explorer and a white Honda sedan, are in the carpool lane. No injuries reported, but expect some delays as the scene is being cleared.
Hazard
25.8 mi
Hit and Run Incident on Graves Ave
A hit-and-run incident has occurred on Graves Ave near the northbound 67 Bradley offramp. Details are limited, but no injuries have been reported.
Other
26.5 mi
No collision reported in Temecula
No collision has been confirmed at Knoll Vista Lane. All units have been cleared from the scene.
Hazard
27.2 mi
Traffic hazard on I15 South
A traffic hazard has been reported on I15 South near French Valley. Units are on the scene, so proceed with caution.
Collision
27.6 mi
Collision on SR-15 S near University
A collision involving a gold Lexus and a white Toyota is affecting traffic on southbound SR-15 near University. Multiple vehicles are stopped, and occupants are outside their cars.
Collision
27.9 mi
Multi-vehicle collision on SR-15 S
A multi-vehicle collision involving a gold Lexus and a white Toyota is blocking lanes on southbound SR-15 at I-805. All vehicles are currently stopped, and occupants are out of their cars.
Hazard
29.2 mi
Traffic hazard on I-15 North at California Oaks
No details reported yet for the traffic hazard on I-15 North at California Oaks. Drivers should remain cautious in the area.
Collision
30.4 mi
Collision involving Tesla and Toyota in El Cajon
A white Tesla Model 3 and a red Toyota Corolla were involved in a collision on Calle De Medio. Both vehicles are driveable, and no injuries have been reported.
Hazard
33.1 mi
Traffic Hazard on I15 South
Southbound I-15 at Baxter No (Wildomar Trail) has multiple traffic cones in the middle lanes. Drive carefully through this area.
Collision
34.4 mi
Hit and Run Incident on Sr74
Eastbound Ortega Highway near Quest Diagnostics is experiencing heavy traffic due to a hit-and-run involving three vehicles, including a gray Honda CRV, a white Ford F250, and a black Lexus IS300. Two of the vehicles have moved to Lucas Canyon Road for statements. No injuries reported.
Hazard
36.3 mi
Traffic hazard on I805 S at Telegraph Canyon
I805 South at Telegraph Canyon has a vehicle on the shoulder, causing a traffic hazard. A tow request has been made, but the shoulder is too small for the truck. CHP is on scene to assist.
Collision
36.6 mi
Minor collision at Sr74 and Antonio Pkwy
At Sr74 and Antonio Pkwy, a gray Mazda 3 sedan and a gray Toyota Tacoma were involved in a collision. No injuries reported.
Hazard
39.0 mi
Traffic hazard on I15 N at Central Ave
There's a traffic hazard on the northbound I15 at Central Ave involving a semi-truck. Emergency units are on the scene to address the situation.
Deadly crash shuts down road in Stanislaus County - KCRA
↗
Lane, Ramp Closures Scheduled Nightly on US-101 for Capital Preventive Maintenance Project in Marin County | Caltrans
↗
Southbound 405 Freeway drops down to three lanes through Sepulveda Pass - WestsideToday
↗
Agoura Road Closure Extended for Wildlife Crossing Work - MyNewsLA.com
↗
Agoura Road Closure Extended For Wildlife Crossing Work | Agoura Hills, CA Patch
↗
405 Freeway lane closures in Sepulveda Pass to cause major weekend delays
↗
14-Hour, I-280 Northbound & Southbound Lane Reductions Scheduled Between Mariposa St. and the I-280/101 Interchange | Caltrans
↗
Major Traffic Delays Impact Both Directions Of I-15 Freeway Through Cajon Pass Thursday - Victor Valley News
↗
Caltrans Announces Southbound I-405 Lane Reductions Through the Sepulveda Pass: September 2026 | Caltrans
↗
Division of Traffic Operations - Road Information - California ...
↗
California State Official Traffic Resources:
CA DOT | Caltrans QuickMap | CHP Traffic Full Site | CHP Traffic Mobile Site
CA DOT | Caltrans QuickMap | CHP Traffic Full Site | CHP Traffic Mobile Site
sources: Caltrans, CHP, Twitter
Alerts Last Updated: Fri, Sep 11th 05:15:03 PM
Are You Here in San Marcos?
Post a photo and report what you see on Signals by LocalConditions.com
National Traffic Forecast
Wet Weekend Ahead: Prepare for Stormy Roads
Updated Fri Sep 11th 2026, 1:46pm PDT
Upper Mississippi Valley and Central Plains
Expect heavy rain and possible flooding on Friday and into Saturday morning across Interstate 94 and Highway 52 in the Upper Mississippi Valley. Severe thunderstorms with gusty winds and hail could impact travel, so plan extra time for commutes on Friday into Saturday morning.Southwest Region
The rain continues into the weekend for the Southwest where Interstate 40 and Route 66 may experience localized flash flooding on Friday into Saturday morning. Roads in urban areas and burn scars are particularly vulnerable. Ohio Valley and Central Appalachians
Watch for heavy downpours on Interstate 70 and Route 50 in the Ohio Valley/Central Appalachians on Saturday. Localized flash flooding is a risk. Mid-Atlantic and Northeast
As a front moves north through Sunday, expect showers and thunderstorms across Interstate 95 and Route 1. Be cautious of slick roads and localized flooding. Southern Mid-Atlantic to Florida
Thunderstorms will develop from the Southern Mid-Atlantic down to Florida along Interstate 95 and westward to the Lower Mississippi Valley through Saturday evening. Drive carefully with potential rainfall affecting visibility and road conditions.
This live traffic and road conditions report is relevant for ZIP codes 92069, 92078, 92079, and 92096, accurately covering areas of San Marcos, CA.
Currently
 |
85°F |
29.79 inHg.
Barometer 58%
Humidity SSW 14.4 mph Wind |
| Sunny | ||