How gas prices have changed in Kennewick in the last week

Stacker compiled statistics on gas prices in Richland-Kennewick-Pasco, WA metro area using data from AAA. Gas prices are current as of September 28.

Kennewick by the numbers
- Gas current price: $5.35
--- Washington average: $5.53
- Week change: -$0.05 (-1.0%)
- Year change: +$1.00 (+23.0%)
- Historical expensive gas price: $5.46 (5/7/26)

- Diesel current price: $7.44
- Week change: -$0.03 (-0.4%)
- Year change: +$2.47 (+49.7%)
- Historical expensive diesel price: $7.53 (9/23/26)

Metros with the least expensive gas
#1. San Antonio, TX: $3.77
#2. Sherman-Denison, TX: $3.82
#3. Evansville, IN: $3.82

Read on to see which metros have the most expensive gas prices.