Costco Gas Prices in Montclair, California
Montclair · Warehouse #686
9404 CENTRAL AVE, Montclair, California 91763-2421
Prices updated: August 15, 2026 at 5:00 PM
Regular
$4.999
PRICE PER GALLON
Press
Premium
$5.399
PRICE PER GALLON
Press
Current gas prices at Costco #686
This Costco gas station is located at 9404 CENTRAL AVE in Montclair, California. The latest reported fuel prices are regular at $4.999/gal, premium at $5.399/gal. Prices were last updated on August 15, 2026 at 5:00 PM.
Get directions to this Costco gas station30-Day Price History
30-day change
Regular
$4.999+0.240 (5.0%)
Premium
$5.399+0.240 (4.7%)
DateRegPrem
Aug 15, 5:00 PM$4.999$5.399
Aug 14, 10:00 PM$4.999$5.359
Aug 13, 3:00 PM$4.999$5.399
Aug 9, 6:00 PM$5.099$5.499
Aug 8, 5:00 AM—$5.499
Aug 8, 4:00 AM$5.099$5.499
Aug 7, 7:00 PM$5.199$5.599
Jul 31, 10:00 PM$5.259$5.659
Jul 29, 4:00 PM$5.159$5.559
Jul 25, 3:00 PM$5.099$5.559
Jul 22, 10:00 PM$5.059$5.559
Jul 21, 4:00 PM$4.999$5.499
Jul 20, 10:00 PM$4.999$5.399
Jul 18, 3:00 PM$4.899$5.299
Jul 17, 10:00 PM$4.759$5.159