Average gasoline prices in Colorado have risen 10.6 cents per gallon in the last week, averaging $3.38/g today, according to GasBuddy's survey of 2,158 stations in Colorado. Prices in Colorado are 2.2 cents per gallon lower than a month ago and stand 59.6 cents per gallon lower than a year ago. The national average price of diesel has declined 3.4 cents in the last week and stands at $3.57 per gallon- the lowest level since January 2022, over 900 days ago.

According to GasBuddy price reports, the cheapest station in Colorado was priced at $2.78/g yesterday while the most expensive was $4.29/g, a difference of $1.51/g. The lowest price in the state yesterday was $2.78/g while the highest was $4.29/g, a difference of $1.51/g.

In the Aspen area, regular gas was listed at $5.20 at the Main Street station, $5.10 at ABC, $5.19 at Snowmass Village, and $3.92 at Aspen Woody Creek, according to Monday rates.

The national average price of gasoline has fallen 6.9 cents per gallon in the last week, averaging $3.15/g today. The national average is down 26.2 cents per gallon from a month ago and stands 70.5 cents per gallon lower than a year ago, according to GasBuddy data compiled from more than 11 million weekly price reports covering over 150,000 gas stations across the country.

Historical gasoline prices in Colorado and the national average going back 10 years:

Sept. 16, 2023: $3.98/g (U.S. average: $3.85/g)

Sept. 16, 2022: $3.61/g (U.S. average: $3.67/g)

Sept. 16, 2021: $3.60/g (U.S. average: $3.18/g)

Sept. 16, 2020: $2.36/g (U.S. average: $2.17/g)

Sept. 16, 2019: $2.66/g (U.S. average: $2.58/g)

Sept. 16, 2018: $2.95/g (U.S. average: $2.84/g)

Sept. 16, 2017: $2.55/g (U.S. average: $2.61/g)

Sept. 16, 2016: $2.17/g (U.S. average: $2.19/g)

Sept. 16, 2015: $2.60/g (U.S. average: $2.30/g)

Sept. 16, 2014: $3.57/g (U.S. average: $3.37/g)

Neighboring areas and their current gas prices:

Fort Collins -- $3.31/g, up 8.0 cents per gallon from last week's $3.23/g.

Colorado Springs -- $3.35/g, up 16.3 cents per gallon from last week's $3.18/g.

Denver -- $3.37/g, up 14.6 cents per gallon from last week's $3.23/g.

"Gasoline prices continue to crumble across nearly the entire nation, with average prices below $3 per gallon in 18 states, with some 65,000 stations selling below that psychological mark. Diesel prices are also falling and are at their lowest level in nearly 1,000 days," said Patrick De Haan, head of petroleum analysis at GasBuddy. "With the change to winter gasoline happening today at most stations across the country, the outlook is bright for the national average to continue to make a run at falling to $2.99 per gallon for the first time since 2021. But while nearly all states are seeing prices drop, refinery maintenance and some outages at California refineries have led to tight supply and rising prices -- a situation I hope can be remedied by the end of the month and help California join in on the decline."