The latest data from American Automobile Association shows the US national average price for regular gasoline at $4.513 per gallon as of May 17, 2026. After a brief dip earlier in the week, pump price changes are almost moving flat, with small increases in some states.While daily shifts may seem modest, the broader trend remains one of persistent regional differences. West Coast and non-contiguous states still post the highest prices, while parts of the South and Midwest continue to offer relatively lower costs. Supply chain dynamics, refinery utilization, fuel taxes, and environmental fuel standards are all contributing to this uneven landscape.Gas Price Today in CaliforniaCalifornia continues to be the most expensive gasoline market in the country. Regular: $6.143 per gallon Midgrade: $6.381 Premium: $6.567 Diesel: $7.421Gas Price Today in TexasTexas remains among the more affordable large states for drivers. Regular: $3.975 per gallon Midgrade: $4.431 Premium: $4.798 Diesel: $5.011Gas Price Today in FloridaFlorida’s prices sit close to the national benchmark. Regular: $4.227 per gallon Midgrade: $4.664 Premium: $5.007 Diesel: $5.186Gas Price Today in New YorkNew York drivers continue to pay above the national average. Regular: $4.608 per gallon Midgrade: $5.089 Premium: $5.486 Diesel: $5.940Gas Price Today in WashingtonWashington remains one of the costliest fuel markets outside California and Hawaii. Regular: $5.777 per gallon Midgrade: $6.035 Premium: $6.285 Diesel: $6.800Other state highlightsHawaii and Oregon are among the most expensive states due to geographic isolation and fuel logistics. Meanwhile, states such as Mississippi, Louisiana, and Oklahoma are among the more affordable regions, with regular fuel below or near the $4 mark.