I-238 North Traffic in Bay Area

As of 10:15 am PDT, I-238 North in the San Francisco Bay Area is averaging 49 mph across 4 sensors, 4 mph slower than usual for this time. The slowest stretch is near Foothill / Castro Valley Blvd at 34 mph (usually 54 mph).

Open the live map of I-238 North →

Is I-238 North moving right now?

Slow stretches as of 10:15 am PDT, and why:

Near Foothill / Castro Valley Blvd: 34 mph, likely heavier traffic than usual for this time (usually 54 mph).

Best time to drive I-238 North

Traffic is usually worst on Thursday around 8 am (about 31 mph). On weekdays the morning slowdown peaks around 8 am (31 mph on Thursdays) and the evening slowdown around 2 pm (54 mph on Fridays). Midday (10 am to 2 pm) averages 53 mph. On weekends it is slowest on Saturdays around 12 pm (56 mph).

Typical average speed (mph) on I-238 North in Bay Area, by day and hour (local time)
Day	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	65	57	48	42	46	48	53	56	57	59	61	63	62	64	66	66	66
Tue	67	59	50	33	38	47	51	55	58	60	59	62	61	61	64	66	66
Wed	67	58	49	34	44	47	49	57	57	59	60	60	61	62	65	66	66
Thu	67	60	49	31	42	48	54	57	57	57	58	63	61	61	65	66	66
Fri	67	56	51	42	48	53	52	52	53	54	56	60	58	55	61	66	66
Sat	66	65	66	66	65	60	57	56	58	59	57	59	59	62	64	65	66
Sun	65	66	66	66	66	64	60	58	58	60	61	60	63	62	63	64	66

Averages of every 5-minute reading we have recorded at this time of the week. Colors match the live map.

Questions

Why is I-238 North slow right now?

Near Foothill / Castro Valley Blvd: 34 mph, likely heavier traffic than usual for this time (usually 54 mph).

When is traffic worst on I-238 North in Bay Area?

Traffic on I-238 North is usually worst on Thursday around 8 am (about 31 mph).

What is the best time to drive I-238 North in Bay Area?

On weekdays, avoid around 8 am (31 mph on Thursdays) and around 2 pm (54 mph on Fridays). Midday (10 am to 2 pm) averages 53 mph, and early mornings and late evenings are fastest.

Is I-238 North busy right now?

Drives that use I-238 North

Best times to leave for these trips, from typical traffic on I-238 North and the roads around it:

Pleasanton to OAK · Pleasanton to Oakland · Modesto to Redwood City · Stockton to Redwood City · Stockton to San Mateo · Stockton to South San Francisco

Plan ahead: Bay Area traffic tomorrow · Christmas traffic · Fourth Of July traffic · Labor Day traffic · Memorial Day traffic · Is Bay Area traffic getting worse? · Traffic estimator

Other freeways in Bay Area

SR-1 North · SR-1 South · SR-4 East · SR-4 West · I-5 North · I-5 South · SR-12 East · SR-12 West · SR-17 North · SR-17 South · SR-24 East · SR-24 West · SR-25 North · SR-25 South · SR-29 South · SR-37 East · SR-37 West · I-80 East · I-80 West · SR-84 North · SR-84 South · SR-85 North · SR-85 South · SR-87 North · SR-87 South · SR-92 East · SR-92 West · SR-99 North · SR-99 South · US-101 North · US-101 South · SR-120 East · SR-120 West · SR-132 East · SR-132 West · I-205 East · I-205 West · SR-237 East · SR-237 West · I-238 South · SR-242 North · SR-242 South · I-280 North · I-280 South · I-580 East · I-580 West · I-680 North · I-680 South · I-880 North · I-880 South · I-980 East · I-980 West

Day	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	65	57	48	42	46	48	53	56	57	59	61	63	62	64	66	66	66
Tue	67	59	50	33	38	47	51	55	58	60	59	62	61	61	64	66	66
Wed	67	58	49	34	44	47	49	57	57	59	60	60	61	62	65	66	66
Thu	67	60	49	31	42	48	54	57	57	57	58	63	61	61	65	66	66
Fri	67	56	51	42	48	53	52	52	53	54	56	60	58	55	61	66	66
Sat	66	65	66	66	65	60	57	56	58	59	57	59	59	62	64	65	66
Sun	65	66	66	66	66	64	60	58	58	60	61	60	63	62	63	64	66

Day	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	65	57	48	42	46	48	53	56	57	59	61	63	62	64	66	66	66
Tue	67	59	50	33	38	47	51	55	58	60	59	62	61	61	64	66	66
Wed	67	58	49	34	44	47	49	57	57	59	60	60	61	62	65	66	66
Thu	67	60	49	31	42	48	54	57	57	57	58	63	61	61	65	66	66
Fri	67	56	51	42	48	53	52	52	53	54	56	60	58	55	61	66	66
Sat	66	65	66	66	65	60	57	56	58	59	57	59	59	62	64	65	66
Sun	65	66	66	66	66	64	60	58	58	60	61	60	63	62	63	64	66

Day	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	65	57	48	42	46	48	53	56	57	59	61	63	62	64	66	66	66
Tue	67	59	50	33	38	47	51	55	58	60	59	62	61	61	64	66	66
Wed	67	58	49	34	44	47	49	57	57	59	60	60	61	62	65	66	66
Thu	67	60	49	31	42	48	54	57	57	57	58	63	61	61	65	66	66
Fri	67	56	51	42	48	53	52	52	53	54	56	60	58	55	61	66	66
Sat	66	65	66	66	65	60	57	56	58	59	57	59	59	62	64	65	66
Sun	65	66	66	66	66	64	60	58	58	60	61	60	63	62	63	64	66