What Time Zone Is Arizona?
Arizona uses 2 time zones: MST (UTC−7), MST (UTC−7). Phoenix is on MST.
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· Arizona — main zone
America/Phoenix
Time zones in Arizona
| Time zone | Offset now | Local time | Main areas |
|---|---|---|---|
| Mountain Standard Time (MST) | UTC−7 | --:-- | Phoenix, Mesa, Tucson, Glendale |
| Mountain Standard Time (MST) | UTC−7 | --:-- | Denver, Albuquerque, El Paso, Salt Lake City, Aurora, Colorado Springs |
Convert Arizona time
Main time zone of Arizona
| Time zone | Mountain Standard Time |
|---|---|
| Abbreviation | MST |
| UTC offset | UTC−7 |
| IANA time zone id | America/Phoenix |
| Daylight saving time | Not observed |
Daylight saving time in Arizona
Arizona does not observe daylight saving time. The clocks stay on UTC−7 all year, so conversions never shift.
Arizona time zone FAQ
What time zone is Arizona in?
Arizona spans 2 time zones: MST (UTC−7), MST (UTC−7).
Which areas of Arizona use each time zone?
MST: Phoenix, Mesa, Tucson, Glendale. MST: Denver, Albuquerque, El Paso, Salt Lake City
Does all of Arizona observe daylight saving time?
No. MST change, while MST stay the same all year.
Updated 7 November 2026. Time zone data: IANA tz database.