Overall monthly cpi inflation in Sep 2026 increased at a rate of 3.71% year over year.
Overall quarterly cpi inflation in 3Q2026 increased at a rate of 3.458% year over year.
Despite the bad uptick in September, 3Q still ticked down.
CNBC has some good summary tables, as usual. In Sep 2026 fuel oil and gasoline price increases were the biggest drivers of the overall cpi rate of 3.71% year over year.
Here’s the inflation breakdown for September 2026 — in one chart
... “Crude oil is moving through the Strait of Hormuz but remains below its pre-war pace. Even after key waterways fully reopen, lost refining capacity and distribution problems may delay lower energy prices until mid-2027,” according to the Wells Fargo Investment Institute analysis. ... The average nationwide price at the pump was $4.33 per gallon on Wednesday, up 45% from $2.98 per gallon on Feb. 27, right before the Iran war began, according to AAA data. ... Average diesel prices were $6.30 per gallon on Wednesday, up about 68% from $3.76 per gallon before the Iran war, according to AAA data. ...
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