Idaho price pulse
A quick regional snapshot of Idaho regular gas averages, colored from cheapest to most expensive using the latest values we have pulled from AAA Fuel Prices.
Idaho Average
$4.861
AAA regular gasoline state average.
California Average
$6.153
1.292 more expensive than Idaho.
National Average
$4.476
0.385 cheaper than Idaho.
Idaho Spread
+0.312
Lewiston to Twin Falls.
Idaho area heat map
Cheapest
Most expensive
Map areas are stylized around AAA's available Idaho metro/area averages. They are not county prices, station prices, or route-planning advice.
Last updated on Boise Today: September 20, 2026.
Source: regular gasoline averages from AAA Fuel Prices Idaho; California comparison from AAA Fuel Prices California. Last updated: September 20, 2026.
Prices are informational regional averages and may lag pump prices. This page is for general comparison and local-interest viewing only.