ROCKFORD, Ill. (WTVO) — The average price of a gallon of gas dropped to $3.70 nationwide on Monday, but prices were even cheaper in northern Illinois.

According to the AAA, the national average price of gas was $3.81 a week ago.

Prices traditionally fall in autumn in anticipation of less travel and as gas stations switch over to a cheaper winter-blend.

In the winter, gasoline blends have a higher vapor pressure, allowing engines to start in colder weather.

Here are the cheapest gas prices in the Rockford area:

However, war between Israel and neighboring Palestine is expected to impact crude oil prices across the Middle East.

“It’s a developing situation,” said Patrick De Haan, of GasBuddy. Prices of US crude oil jumped by 5% Monday, according to Bloomberg.