The IsToday function in PowerApps is used to determine whether a given date/time value corresponds to today's date. This function is useful for validating or filtering records based on whether they occur today, enhancing user experiences by showing relevant daily data.

PowerApps – IsToday() Syntax

• Date: The date/time value to check. This should be valid date format.

PowerApps – IsToday() basic Example

To check if the current date/time (Now()) is today:

This returns true if the current date is today.           

PowerApps – IsToday() with a Specific Date

To check if a specific date, such as January 1, 2024, is today:

This returns true if the given date is today's date (based on the system date).

PowerApps – IsToday() with a Variable

Suppose you have a variable MyDate containing a date value, and you want to check if it is today:

PowerApps - Conditional Formatting Based on Today's Date

To apply conditional formatting to highlight records for today, such as changing the color of a label:

This sets the text color to green if DateField is today, otherwise black.