Brentwood gas & diesel watch: AAA St. Louis metro averages tick up after yesterday

As of July 10, 2026, AAA shows a small day-to-day lift in the St. Louis (MO only) metro averages—a figure Brentwood drivers can use as a practical proxy for what many local pumps are doing.

Regular gas averaged $3.5140/gal, up from $3.5000 yesterday. It’s still below $3.5270 from last week and far under $3.8890 from last month (but above $2.9150 a year ago).

Diesel averaged $4.3240/gal, up from $4.3160 yesterday. Diesel remains down versus $4.4340 last week and $5.0440 last month, though it’s higher than $3.3630 from a year ago.

Regular gas: slight bounce, longer slide

From yesterday to today, the St. Louis metro average for regular moved up by $0.0140/gal. But when you look further out, the picture stays calmer than earlier this summer: regular is $0.0130 lower than last week’s average and $0.3750 lower than the month-ago figure AAA reported. Versus last year, the average is still meaningfully higher.

Diesel: up a touch, still cheaper than a month ago

Diesel is also edging up day-to-day: $4.3240 today versus $4.3160 yesterday. Yet the week and month comparisons are more important for budgeting. Diesel is $0.1100 below last week’s metro average and $0.7200 below the month-ago level—helpful for anyone whose costs follow diesel most closely, including delivery and service fleets.

What this means for Brentwood-area drivers and fleets

Brentwood is part of the St. Louis metro area, and AAA publishes these metro averages for St. Louis (MO only). That means it’s a useful guide for what’s happening in the region—but it’s not a promise of the exact price at any one station in Brentwood. County lines, route patterns, and individual station pricing can all create differences at the pump.

Still, the direction matters for everyday planning:

• Commuters may feel the impact more in how often they refuel; a small uptick vs yesterday is usually less noticeable than whether prices are trending lower over the past month.
• Households that top off more than once a week can track the week-ago/month-ago movement to decide when to fill for weekend plans or a work-run schedule.
• Local contractors and fleets have diesel timing baked into budgets—so month-to-month declines (as shown here) can be a real margin signal versus earlier this summer.

EIA national trend (background)

For broad context, EIA’s July 7, 2026 Gasoline and Diesel Fuel Update reports U.S. regular gasoline and on-highway diesel were both lower than a week earlier—consistent with the idea that some price pressure has eased compared with recent weeks.

Local shopping tip

If you’re due to fill, check prices at a few nearby stations before you commit—AAA’s metro averages are a helpful starting point, but station-to-station differences can be significant.

What are you seeing at the pump locally? Share the highest and lowest regular or diesel prices you’re seeing in Brentwood and along your usual routes.

Sources

• AAA Fuel Prices (Missouri) — St. Louis (MO only) metro averages (Regular & Diesel)
• EIA — Gasoline and Diesel Fuel Update (latest weekly U.S. gasoline + on-highway diesel context)
• U.S. Census Bureau QuickFacts — Brentwood city, Missouri
• City of Brentwood — About Brentwood (St. Louis County / St. Louis metropolitan area framing)