India, Aug. 10 -- 30-year mortgage rates edged lower today. The average interest rate on a 30-year home purchase mortgage is 6.823%, down from 6.843% on Friday, according to Zillow data. Refinance rates are slightly higher. The average rate for a 30-year mortgage refinance is 6.943%, while the average 15-year refinance rate is 5.973%.

Mortgage rates are still being affected by the war in Iran. Home loan rates have risen since the beginning of the US war in Iran in late February. When the conflict looks like it could get worse, mortgage rates usually move higher along with 10-year US Treasury yields, an important benchmark for mortgage rates, according to US News.

Rates can fall when tensions ease. When the Iran conflict appears to be mo...