Washington Gasoline prices, liter

We show Octane-95 gasoline price data for Washington from 26-Jan-2026 to 04-May-2026. The average gasoline price during that period is 1.10 per liter with a minimum of 0.93 on 02-Feb-2026 and a maximum of 1.29 on 04-May-2026. Our data are obtained from official government sources, regulatory agencies, petroleum companies, and major media sources. We update the series for Washington every week.