What Arizona Judges Really Impose for DUI Jail Time in City & Justice Courts

Do Arizona DUI convictions always include jail? Here’s how it really works

Arizona is a mandatory-jail state for DUI. If you are convicted under A.R.S. 28-1381 (impairment or 0.08 BAC), 28-1382 (Extreme DUI), or 28-1383 (Aggravated DUI), the court must impose at least the statutory minimum. That said, the actual time you serve can be reduced or structured with alternatives when the law allows and the judge approves.

For a first-time, non-extreme misdemeanor DUI under A.R.S. 28-1381, the statute calls for 10 days in jail. Under the statute’s suspension provision, courts commonly suspend all but 1 day if you complete alcohol screening and any recommended education or treatment. In other words, many first offenders serve 24 hours behind bars if they comply with the court’s conditions, though each court’s practice varies.

Arizona’s Extreme DUI law, A.R.S. 28-1382, sets higher minimums. A first Extreme DUI (BAC 0.15–0.199) carries 30 days. The court may suspend all but 9 days if you install a certified ignition interlock for 12 months. A first Super Extreme DUI (0.20 or more) carries 45 days, with the possibility of suspending all but 14 days if you install interlock. These suspensions are written into the statute and are widely applied, but they are not automatic—judges consider your compliance and the case facts.

Second-offense minimums escalate sharply. A second non-extreme DUI within 84 months requires at least 90 days (with portions that must be served consecutively). A second Extreme requires at least 120 days, and a second Super Extreme requires at least 180 days. Courts can use authorized alternatives like home detention only if the jurisdiction and jail implement approved programs and the judge permits it.

Aggravated DUI under A.R.S. 28-1383 is a felony, most often based on a third DUI within 84 months, driving on a suspended license due to DUI, or DUI with a minor passenger. Aggravated DUI sentencing is handled in the Superior Court, and the statute imposes mandatory prison time in many scenarios—commonly at least 4 months in the Department of Corrections—before probation may be granted. These outcomes are charge-specific and depend on the subsection and priors.

Beyond the raw numbers, Arizona courts may authorize structured alternatives. City programs under A.R.S. 9-499.07 and county programs under A.R.S. 11-251.15 permit home detention and continuous alcohol monitoring in participating jurisdictions. Some sheriffs administer work release or work furlough under Title 31 (for example, A.R.S. 31-144 and 31-332), allowing you to leave jail for employment or schooling on a set schedule. Availability depends on the county, the jail’s policies, your risk classification, BAC level, priors, and judicial approval.

Strong defense work can avoid jail entirely by avoiding the conviction. Arizona appellate decisions continue to shape what the State must prove. In State v. Zaragoza, the Arizona Supreme Court clarified when a person is in actual physical control of a vehicle, a frequent issue in parked-car cases. In State ex rel. Montgomery v. Harris, the Court limited drug DUI prosecutions based on inactive marijuana metabolite. In Dobson v. McClennen, the Court recognized an affirmative defense for medical marijuana cardholders under certain circumstances. Effective use of these and related authorities can lead to charge reductions, dismissals, or acquittals, which eliminates jail exposure.

Where DUI cases are heard in Maricopa County

Misdemeanor DUIs are typically filed in city courts—such as Phoenix Municipal Court, Mesa Municipal Court, Glendale City Court, and Tempe Municipal Court—or in Maricopa County Justice Courts. Felony Aggravated DUI cases go to Maricopa County Superior Court. Procedures and alternative-sentencing programs differ by court and by the jail that will house any sentence.

Arizona law, penalties & procedures that determine jail time

Key DUI statutes:

A.R.S. 28-1381 (Impaired to the slightest degree or BAC 0.08+) — Class 1 misdemeanor. Minimum 10 days jail for a first offense; the court may suspend all but 1 day upon completion of screening and any education or treatment ordered. A second offense within 84 months requires at least 90 days, with license, interlock, and assessment requirements.

A.R.S. 28-1382 (Extreme & Super Extreme) — For BAC 0.15–0.199, minimum 30 days; the court may suspend all but 9 days with interlock installation. For BAC 0.20 or more, minimum 45 days; the court may suspend all but 14 days with interlock. Second-offense minimums increase to at least 120 days (Extreme) and 180 days (Super Extreme), with consecutive-day requirements built into the statute.

A.R.S. 28-1383 (Aggravated DUI) — Felony. Common scenarios include a third DUI within 84 months or DUI while your license is suspended, revoked, or restricted. The statute mandates a prison term in many cases—often a minimum of 4 months—before probation eligibility. Felony sentencing occurs in Superior Court and is subject to the Arizona Rules of Criminal Procedure and presentence investigation reports.

Alternative sentencing & credits:

Home detention & continuous alcohol monitoring are authorized for municipal courts under A.R.S. 9-499.07 and for counties under A.R.S. 11-251.15. Programs vary by jurisdiction and may require a percentage of the sentence be served in jail before conversion. Interlock-related suspensions under A.R.S. 28-1382 allow reduced jail in certain extreme cases if you install a certified ignition interlock device for 12 months.

Work release/furlough under Title 31 permits limited release from jail to maintain employment or schooling when jail and court approve. Not every jail offers these options, and eligibility is case-specific.

Procedures that affect outcomes:

— Filing & arraignment: Misdemeanors begin in city or justice courts; felonies in Superior Court. You will enter a plea and receive disclosure deadlines under Rule 15, Ariz. R. Crim. P.

— Pretrial litigation: Motions to suppress or dismiss often target the traffic stop, field sobriety tests, breath-test compliance with administrative rules, and blood-draw warrants. Successful motions reduce or eliminate jail exposure.

— Trial & sentencing: If convicted, the judge must impose statutory minimums. The defense presents mitigation (treatment completion, employment, family responsibilities, lack of priors, health needs) and requests lawful alternatives like home detention or work release where available.

— MVD consequences: License suspensions and ignition interlock are administered separately from the criminal case. Timely action on implied-consent hearings can impact your ability to drive to work or treatment while the case proceeds.

Local experience matters. Founder Derek Oliverson served as a police officer in Henderson, Nevada, a prosecutor in Mohave County, a judge in the Page Magistrate Court handling over 3,000 cases per year, and in 2012 a judge in Glendale City Court overseeing roughly 40,000+ cases per year before leaving the bench in 2014. Attorney David Tangren is a University of Arizona law graduate and former prosecutor with the Pima County Attorney’s Office. That perspective helps align requests with what specific Arizona courts and jails will actually permit.

If your goal is to minimize or avoid jail, get counsel involved early. To learn about defenses and sentencing strategies, see our DUI lawyer in Arizona hub.

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Frequently Asked Questions