Cincinnati Gas and Diesel Prices Rise Again as Both Move Higher Into August

Cincinnati’s average regular-gas price reached $3.929 per gallon in AAA’s July 31, 2026, check, up 8.6 cents from the previous day. The city’s average diesel price also moved higher, reaching $5.182 per gallon, an increase of 2.1 cents from the prior check.

The latest figures put both fuels above their levels from a week earlier, a month earlier and a year earlier. Individual stations can vary, so AAA’s Cincinnati average should be used as a metro-area reference rather than a price guarantee at every pump.

Regular gas moves higher again

AAA listed Cincinnati regular gasoline at $3.929 per gallon on July 31, compared with $3.843 the day before. That is an 8.6-cent daily increase.

The weekly increase was smaller but still meaningful: the average was $3.866 a week earlier, making the latest price 6.3 cents higher. Over the past month, Cincinnati regular gas rose from $3.700 to $3.929, an increase of 22.9 cents.

The year-over-year comparison is larger. AAA listed the Cincinnati average at $3.023 a year earlier, putting the current price 90.6 cents higher.

Diesel remains under heavier cost pressure

Cincinnati diesel averaged $5.182 per gallon on July 31, up from $5.161 in the previous AAA check. The daily increase was 2.1 cents.

Diesel’s longer-term movement was substantially steeper than regular gasoline’s. The latest average was 21.9 cents above the $4.963 level recorded a week earlier. Compared with a month ago, diesel rose from $4.983 to $5.182, an increase of 19.9 cents.

Compared with a year earlier, the diesel average increased from $3.682 to $5.182. That is a $1.500-per-gallon increase.

Regional data offers broader context

The U.S. Energy Information Administration publishes weekly gasoline and diesel data for the Midwest and other regions. Those figures are broader than Cincinnati’s metro average, so the AAA Cincinnati figures remain the relevant local measure for drivers and businesses here.

What higher prices could mean locally

For Cincinnati commuters and households, the immediate effect is higher spending for regular gasoline, especially for people with long daily drives or multiple vehicles. Comparing nearby stations may help because pump prices can differ by location even when the metro average is rising.

Diesel’s larger weekly and annual increases may put added cost pressure on delivery operators, contractors, construction companies, maintenance providers and other businesses that rely on diesel-powered vehicles or equipment. Those effects could appear through fuel budgets, delivery costs or service pricing, although the AAA data does not document how any specific local business has responded.

Future price checks will show whether the August trend continues or begins to ease. Cincinnati readers can share the highest and lowest pump prices they are seeing locally, including the neighborhood or cross streets, to help track how much prices differ across the city.

Sources

• AAA Fuel Prices — Ohio and Cincinnati averages
• U.S. Energy Information Administration — Gasoline and Diesel Fuel Update