Dispatched Pulse · PADD 4 — Rocky Mountain

PADD 4 — Rocky Mountain diesel — week of 2026-05-18.

Rocky Mountain — Idaho, Montana, Wyoming, Colorado, Utah. Sparse refining capacity, long pipelines; prices move on West Coast supply.

Updated Mon, May 18, 2026 · Weekly · Monday · refresh delayed, retrying

PADD 4 — Rocky Mountain

$3.879

-0.032 WoW · +3.4% YoY

This week vs. last week

This Monday
$3.879
Last Monday
$3.911
Week-over-week
-0.032 (-0.8%)
Year ago
$3.752
Year-over-year
+3.4%
Spread vs. U.S. national
+0.067

9-week trend

Week ofPADD 4 — Rocky Mountain
2026-03-23$3.962
2026-03-30$3.949
2026-04-06$3.937
2026-04-13$3.925
2026-04-20$3.919
2026-04-27$3.915
2026-05-04$3.913
2026-05-11$3.911
2026-05-18$3.879

Source: EIA Weekly Petroleum Data. PADD-level weighting reflects EIA’s published methodology.

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