The timeanddate.com website provides the offset from UTC for cities from all over the world.
Choose Help > Look Up UTC Offset & DST. Your browser will take you to the timeanddate.com website.
Type the name of the city in the "World Clock" field and click the magnifying glass button. If multiple matches are found, click your city and display its "Current Local Time" page.
Click the Time Zone tab: for a city in the Northern Hemisphere the standard offset from UTC appears in the blue segments of the Time Zones graph. If the city is in the Southern Hemisphere, the standard offset from UTC appears in the orange segment of the Time Zones graph.
About Coordinated Universal Time