Officers are urging the public not to start camp fires and bonfires during today's hot, dry conditions.
A spokesman for Lancashire Constabulary said: "Please look after our green spaces in the hot weather. It only takes the smallest spark from a barbecue or a discarded cigarette to ignite a devastating wildfire!
"Lancashire has suffered accidental wildfires over the years that have caused devastating damage to our most beautiful outdoor spots!
"Don't get caught out! Arson is a criminal offence, even if accidental!"