Brown University Climate Solutions Lab

Built World

As of September 2026: Quantified the war's fuel cost to households

Gasoline averaged $4.44 a gallon on Sept. 17, up 39% from a year ago; diesel hit a record $6.40, up 73%. President Donald Trump said he hoped an end to the war against Iran was near, even as Houthi fighters escalated attacks on Saudi Arabia.

Updated Sep 17