Gas Prices in Idaho Today

Updated April 5, 2026 — Prices updated regularly from EIA data

$3.18

Average regular unleaded — Idaho

Today's Idaho Gas Prices

Today's regular unleaded price in Idaho is $$3.18 per gallon, placing it below ($0.81) the national average. Idaho's Northwest regional market conditions — including refinery proximity and pipeline access — play a decisive role in pricing.

Fuel TypePrice / GallonGradeTrend
Regular Unleaded$3.1887 octane▲ Rising
Mid-Grade$3.6889 octane▲ Rising
Premium$3.9791-93 octane▲ Rising
Diesel$4.30N/A▲ Rising

Gas Prices Across Idaho Cities

Boise$3.23Nampa$3.10Meridian$3.38Idaho Falls$3.41

About Idaho Fuel Markets

Idaho charges 33 cents per gallon in state fuel taxes. The Northwest state relies on regional fuel infrastructure for supply.

Fuel Type Prices in This City

Regular Unleaded
87 octane
Premium Gasoline
91-93 octane
Diesel Fuel
N/A

Gas Prices in Neighboring & Popular States

CaliforniaCAFloridaFLGeorgiaGAIllinoisILNew YorkNYNorth CarolinaNC
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Frequently Asked Questions

Idaho's gas prices reflect its state fuel tax of 33 cents per gallon state fuel tax of 33 cents per gallon and its Northwest location. {supplyNote} also plays a significant role in what Idaho drivers pay at the pump.
Gas prices within Idaho typically vary 10-20 cents across cities. Urban areas with intense station competition often have better prices than rural regions with fewer options. Warehouse clubs in any major Idaho city consistently offer the best prices statewide.
In Idaho, as in most US states, Monday and Tuesday tend to show the lowest weekly prices. Prices rise Thursday through Sunday as weekend demand increases. Filling up Tuesday afternoon typically captures the weekly low.
Idaho charges 33 cents per gallon in state fuel taxes. The national average is around 30 cents per gallon. Idaho's tax places it among the mid-range states nationally for fuel taxation.
Idaho gas stations offer regular (87 octane) at $$3.18, mid-grade (89 octane) at approximately $$3.68, premium (91-93 octane) at $$3.97, and diesel at $$4.30 per gallon. Most stations also offer E85 ethanol blend where flex-fuel vehicles are common.

Related Gas Price Pages

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