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Fuel prices · Washington

Average market prices.

prices as of October 18, 2026 3 fuel types
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Fuel Price over the last 90 days Price (per gallon)
Regular petrolRegular gasoline Sep 6, 2026 — $5.483 Sep 13, 2026 — $5.503 Sep 20, 2026 — $5.516 Sep 27, 2026 — $5.453 Oct 4, 2026 — $5.424 Oct 11, 2026 — $5.377 Oct 18, 2026 — $5.332 $5.332
Midgrade petrolMidgrade gasoline Sep 6, 2026 — $5.784 Sep 13, 2026 — $5.817 Sep 20, 2026 — $5.803 Sep 27, 2026 — $5.76 Oct 4, 2026 — $5.749 Oct 11, 2026 — $5.721 Oct 18, 2026 — $5.68 $5.68
Premium petrolPremium gasoline Sep 6, 2026 — $5.985 Sep 13, 2026 — $6.032 Sep 20, 2026 — $6.021 Sep 27, 2026 — $5.989 Oct 4, 2026 — $5.959 Oct 11, 2026 — $5.937 Oct 18, 2026 — $5.891 $5.891

Prices at individual filling stations may differ.

Updated: October 19, 2026 · Source: U.S. Energy Information Administration — Weekly Retail Gasoline and Diesel Prices