Parts of Northern Ireland are set to record temperatures in the mid-20s over the next few days but it is not yet clear if it will be declared a heatwave.
This is because temperatures must reach 25C or above for three consecutive days for that to happen, according to the Met Office, external.
That threshold could be met, especially in western counties with about 25C expected on Thursday and possibly up to 28C on Friday.
However, temperatures look set to dip on Saturday with an expected temperature of about 23C.