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Fuel prices · Rocky Mountain (PADD 4)

Average market prices.

prices as of October 18, 2026 4 fuel types
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Fuel Price over the last 90 days Price (per gallon)
Regular petrolRegular gasoline Sep 6, 2026 — $4.314 Sep 13, 2026 — $4.438 Sep 20, 2026 — $4.51 Sep 27, 2026 — $4.486 Oct 4, 2026 — $4.417 Oct 11, 2026 — $4.439 Oct 18, 2026 — $4.468 $4.468
Midgrade petrolMidgrade gasoline Sep 6, 2026 — $4.659 Sep 13, 2026 — $4.774 Sep 20, 2026 — $4.857 Sep 27, 2026 — $4.81 Oct 4, 2026 — $4.749 Oct 11, 2026 — $4.778 Oct 18, 2026 — $4.824 $4.824
Premium petrolPremium gasoline Sep 6, 2026 — $4.984 Sep 13, 2026 — $5.12 Sep 20, 2026 — $5.193 Sep 27, 2026 — $5.176 Oct 4, 2026 — $5.097 Oct 11, 2026 — $5.106 Oct 18, 2026 — $5.128 $5.128
DieselDiesel (on-highway) Sep 6, 2026 — $5.805 Sep 13, 2026 — $6.066 Sep 20, 2026 — $6.34 Sep 27, 2026 — $6.407 Oct 4, 2026 — $6.267 Oct 11, 2026 — $6.302 Oct 18, 2026 — $6.422 $6.422

Prices at individual filling stations may differ.

Updated: October 20, 2026 · Source: U.S. Energy Information Administration — Weekly Retail Gasoline and Diesel Prices