Traffic Predict
Best Time to Drive from Diamond Bar to Simi Valley
Right now (3:20 pm PST): about 74 minutes via I-210 West and SR-118 West, usually 71 at this time.
Only 29% of this drive is measured by working traffic sensors right now. The rest is estimated from nearby sensors, typical speeds and street traffic, so times can be off. Why so few sensors work.
Typical drive time by departure time
| Leave | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mon | 60 | 70 | 92 | 89 | 84 | 80 | 77 | 74 | 72 | 70 | 72 | 80 | 77 | 68 | 65 | 63 | 62 |
| Tue | 60 | 71 | 101 | 95 | 87 | 82 | 78 | 73 | 71 | 72 | 74 | 82 | 82 | 72 | 66 | 64 | 62 |
| Wed | 61 | 71 | 97 | 93 | 86 | 81 | 77 | 75 | 72 | 72 | 79 | 87 | 84 | 76 | 69 | 65 | 62 |
| Thu | 60 | 70 | 93 | 89 | 83 | 80 | 78 | 74 | 73 | 73 | 79 | 90 | 88 | 76 | 69 | 64 | 62 |
| Fri | 61 | 68 | 77 | 78 | 78 | 78 | 76 | 76 | 76 | 76 | 93 | 90 | 81 | 75 | 70 | 64 | 62 |
| Sat | 62 | 62 | 63 | 62 | 64 | 66 | 70 | 72 | 72 | 72 | 71 | 70 | 69 | 67 | 66 | 62 | 61 |
| Sun | 62 | 62 | 61 | 62 | 62 | 62 | 64 | 67 | 70 | 69 | 68 | 67 | 66 | 65 | 64 | 63 | 62 |
About this drive
On weekdays the 69-mile drive from Diamond Bar to Simi Valley (via I-210 West and SR-118 West) usually takes as little as 60 minutes and up to 101 minutes, when leaving around 7 am on Tuesdays. The fastest times to leave are before 6 am or after 7:30 pm. Midday (11 am to 2 pm) it takes about 74 minutes. On weekends it is slowest around 1:30 pm on Saturdays (72 minutes).
About 68 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 1.2 miles surface streets (1 to 3 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Diamond Bar to central Simi Valley along the route on the map. Starting or ending elsewhere in a big city can add or save several minutes.
Simulated from typical freeway speeds at each point of the drive for the time you would reach it, from every 5-minute reading we have recorded. We don't have sensors on surface streets yet, so the time on them is estimated from how congested the freeways around each end of the drive are at that time, in both directions: streets jam when the freeways do.
Questions
What is the best time to drive from Diamond Bar to Simi Valley?
On weekdays, leave before 6 am or after 7:30 pm. The drive usually takes about 60 minutes then, versus up to 101 minutes at the worst times.
How long does it take to drive from Diamond Bar to Simi Valley?
The 69-mile drive usually takes 60 to 101 minutes on weekdays, depending on when you leave, and about 74 minutes midday.
When is traffic worst from Diamond Bar to Simi Valley?
Leaving around 7 am on Tuesdays is usually slowest, about 101 minutes.
Freeways on this drive
I-210 West in Los Angeles (40 miles) · SR-118 West in Los Angeles (21 miles) · SR-57 North in Los Angeles (7 miles)
Los Angeles traffic right now · Los Angeles traffic tomorrow
More drives
Simi Valley to Diamond Bar (return trip) · Diamond Bar to Los Angeles · Diamond Bar to Long Beach · Diamond Bar to Anaheim · Diamond Bar to Riverside · Diamond Bar to Santa Ana · Diamond Bar to Irvine · Diamond Bar to San Bernardino · Diamond Bar to Fontana · Diamond Bar to Moreno Valley · Diamond Bar to Huntington Beach · Diamond Bar to Glendale