Costco Montclair Gas Prices – Central Ave
- Regular · today
- $5.899
- Premium · today
- $6.299
USD per gallon · Last updated September 30, 2026 · This station does not sell diesel
9404 Central Ave, Montclair, CA 91763-2421 · Open in Maps ↗
30-day range
where today sits- Regular$5.899 today · avg $5.511$5.099 low$5.899 high
- Premium$6.299 today · avg $5.900$5.499 low$6.299 high
Price history at Montclair
Last 30 days · USD per gallonView data as table
| Date | Regular | Premium |
|---|---|---|
| Sep 1 | $5.099 | $5.499 |
| Sep 2 | $5.199 | $5.499 |
| Sep 3 | $5.199 | $5.539 |
| Sep 4 | $5.199 | $5.539 |
| Sep 5 | $5.199 | $5.599 |
| Sep 6 | $5.199 | $5.599 |
| Sep 7 | $5.259 | $5.699 |
| Sep 8 | $5.259 | $5.699 |
| Sep 9 | $5.359 | $5.759 |
| Sep 10 | $5.359 | $5.759 |
| Sep 11 | $5.399 | $5.799 |
| Sep 12 | $5.399 | $5.799 |
| Sep 13 | $5.399 | $5.799 |
| Sep 14 | $5.399 | $5.799 |
| Sep 15 | $5.499 | $5.899 |
| Sep 16 | $5.499 | $5.899 |
| Sep 17 | $5.499 | $5.999 |
| Sep 18 | — | — |
| Sep 19 | $5.599 | $5.999 |
| Sep 20 | $5.599 | $5.999 |
| Sep 21 | $5.699 | $6.059 |
| Sep 22 | $5.699 | $6.099 |
| Sep 23 | $5.759 | $6.159 |
| Sep 24 | $5.799 | $6.159 |
| Sep 25 | $5.799 | $6.199 |
| Sep 26 | $5.859 | $6.199 |
| Sep 27 | $5.899 | $6.199 |
| Sep 28 | $5.899 | $6.259 |
| Sep 29 | $5.899 | $6.299 |
| Sep 30 | $5.899 | $6.299 |
Last updated September 30, 2026. Prices are collected once daily and can lag same-day changes at the pump.
Today’s price in context
At $5.899 for Regular, Montclair is tied for the 15th cheapest of 128 Costco gas stations in California today, $0.143 below the California average of $6.042.
None of the 5 nearest Costco stations is cheaper today.
- vs the US average
- $1.293 above, at $4.606
- Premium over Regular
- $0.400 — the California median is $0.400
- Over the last 30 days
- up $0.800
- Days the price changed
- 11 of 29 reported days
- Cheapest day in the window
- September 1, 2026, at $5.099
- 15-gallon fill
- $88.48, $12.00 more than at the 30-day low
Montclair is located at 9404 Central Ave, Montclair, CA 91763-2421, in California. The gas station sits in the warehouse parking lot and is open to Costco members, selling Regular and Premium — this location does not sell diesel. Gas station hours are 5:30 a.m. – 10 p.m. on weekdays, 6 a.m. – 8:30 p.m. on Saturdays and 6 a.m. – 7:30 p.m. on Sundays, in local time.
Station details
Montclair Gas station hours
- Mon–Fri
- 5:30 a.m. – 10 p.m.
- Saturday
- 6 a.m. – 8:30 p.m.
- Sunday
- 6 a.m. – 7:30 p.m.
Montclair Warehouse hours
- Mon–Fri
- 10 a.m. – 8:30 p.m.
- Saturday
- 9:30 a.m. – 7 p.m.
- Sunday
- 10 a.m. – 6 p.m.
Costco gas near Montclair
- 1Chino HillsChino Hills, CA · 5.6 mi$5.999Regular
- 2Ontario Business CenterOntario, CA · 6.8 mi$5.899Regular
- 3San DimasSan Dimas, CA · 8.1 mi$5.999Regular
- 4Rancho CucamongaRancho Cucamonga, CA · 8.2 mi$5.899Regular
- 5EastvaleEastvale, CA · 9.7 mi$5.959Regular
Distances are straight-line. Prices across the border are shown in that country’s units (¢ per litre).
Cities near Montclair
- Costco gas prices Chino Hills · CA · 6 mi$5.999
- Costco gas prices Ontario · CA · 7 mi$5.899
- Costco gas prices San Dimas · CA · 8 mi$5.999
- Costco gas prices Rancho Cucamonga · CA · 8 mi$5.899
- Costco gas prices Eastvale · CA · 10 mi$5.959
- Costco gas prices Azusa · CA · 14 mi$5.999
- Costco gas prices City Of Industry · CA · 15 mi$5.999
- Costco gas prices Fontana · CA · 15 mi$6.099
At this location
- Warehouse opened
- December 2001
- Warehouse phone
- (909) 575-5004
- Pumps open before the warehouse
- 4 hours and 30 minutes on weekdays
The pumps open at 5:30 a.m. on weekdays, ahead of the 6 a.m. most Costco gas stations in the US open.
Also at this warehouse: a food court, a pharmacy, an optical department and a tire center.
Costco publishes one number per warehouse; there is no separate line for the gas station.
Frequently asked questions
How much is gas at Costco Montclair today?
As of the September 30, 2026 reading: Regular $5.899 and Premium $6.299 per gallon. Prices are collected once a day, so the pump can differ.
What time does the Costco Montclair gas station open?
The pumps are open 5:30 a.m. – 10 p.m. weekdays, 6 a.m. – 8:30 p.m. Saturdays and 6 a.m. – 7:30 p.m. Sundays, in local time. The pumps open 4 hours and 30 minutes before the warehouse on weekdays.
Does the Costco Montclair gas station sell diesel?
No — this station sells Regular and Premium, and has reported no diesel price in the last 30 days.
Is Costco Montclair cheaper than the average Costco station in California?
Yes — at $5.899, Regular here is $0.143 below the California Costco average of $6.042.
Where is the Costco Montclair gas station?
At 9404 Central Ave, Montclair, CA 91763-2421. It sits in the Costco warehouse parking lot and is open to members only.
Do you need a Costco membership to buy gas?
Yes — a Gold Star, Executive or Business membership card has to be scanned at the pump before it will dispense, though a Costco Shop Card also works for non-members.
What payment methods does the Costco gas station accept?
Visa, PIN debit and the Costco Shop Card; US Costco fuel pumps take no cash and no Mastercard, American Express or Discover.
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