Check Idaho gas prices today for regular, mid-grade, premium, and diesel fuel. The price tool below shows AAA-sourced daily averages, recent price movement, and a fill-up cost estimate for drivers across the Gem State.
What Affects Idaho Gas Prices?
- Supply routes from Salt Lake City and Pacific Northwest refineries
- Heavy commercial trucking and agricultural freight demand along the I-84 corridor
- Delivery distances to remote, mountainous regions in Central and Northern Idaho
- Seasonal tourism and RV travel to destinations like Coeur d’Alene and Sun Valley
- Idaho’s state motor fuel tax and local market conditions
- High commuter demand in the Treasure Valley metro area
Idaho Gas Prices by Fuel Type
- Regular: The standard baseline fuel for most daily commuters and passenger vehicles.
- Mid-grade: Recommended for older high-compression engines or vehicles towing campers through mountain passes.
- Premium: Necessary for luxury, turbocharged, or high-performance vehicles to prevent engine knocking at high elevations.
- Diesel: Tracks closely with commercial freight, agricultural transport, and heavy-duty trucking across the state.
Idaho Gas Prices vs Nearby States
Regional borders create noticeable price shifts in the Pacific Northwest and Mountain West. When planning cross-state trips, keep these comparisons in mind:
- Washington gas prices and Oregon gas prices often differ due to varying state taxes, environmental fuel mandates, and West Coast refinery access.
- Utah gas prices may be lower or higher depending on Salt Lake City refinery outputs and pipeline supply routes.
- Montana gas prices and Wyoming gas prices fluctuate based on their respective rural transport costs and local demand patterns.
Tips for Getting Better Gas Prices in Idaho
- Compare station prices in the Boise metro area before driving onto rural stretches of I-84 or US-93.
- Fill up your tank before heading into remote, mountainous regions like the Sawtooth National Forest or the northern panhandle.
- Check your tire pressure regularly, especially before long hauls or when dealing with extreme winter cold and summer heat.
- Stick to regular unleaded unless your vehicle’s manufacturer explicitly requires premium.
- Plan your diesel and fuel stops along major agricultural and freight corridors before long hauls.
- Avoid unnecessary idling in heavy Treasure Valley commuter traffic.
Idaho Gas Price FAQs
What is the average gas price in Idaho today?
The current daily averages for regular, mid-grade, premium, and diesel are displayed in the dynamic tool at the top of this page.
Why do Boise and Coeur d’Alene gas prices differ?
Boise relies heavily on pipeline supply from Salt Lake City refineries, while Northern Idaho is more influenced by Pacific Northwest supply chains and Washington state market dynamics.
Why can rural areas in Idaho cost more at the pump?
Stations in remote mountain towns face less local competition and higher overhead costs for fuel delivery over long, difficult routes from major distribution hubs.
Is diesel included in Idaho gas price data?
Yes, the tool tracks Idaho diesel prices alongside unleaded options, which is essential for commercial truckers, agricultural transport, and RV travelers navigating the state’s freight corridors.
Does Idaho use special gasoline blends?
Idaho generally uses standard federal EPA fuel blends for most of the year, which helps keep production and transportation costs lower than states with strict boutique fuel mandates.
