Gas prices in Champaign County and in Illinois were up last month according to AAA.
Locally, the average price for a gallon was $3.78. That's up 21 cents from April and up 18 cents from the same time last year.
Statewide, the average price was $3.95 a gallon, up 16 cents from April and up seven cents from the same time last year.
AAA also says Illinois gas prices remain among the highest in the nation. Chicago has the highest city average at $4.44 a gallon.