Today’s average interest rate on a 30-year purchase mortgage is 6.665%, according to Zillow data provided to U.S. News. That’s higher than yesterday, when rates were 6.646%. For refinancing mortgages, today’s 30-year rate is 6.749%, and the current 15-year rate is 5.852%.

Interest rates on home loans have risen since the beginning of the U.S. war in Iran. The Middle East conflict has put upward pressure on oil prices, which can make other items more expensive to manufacture and transport. Put simply, higher oil prices mean higher inflation – and higher inflation means higher interest rates.