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New Hampshire DUI / DWI Limits (2026)

Info: In New Hampshire the adult DWI limit is 0.08% blood alcohol, with an aggravated offense at 0.16%, and drivers under 21 are held to a zero-tolerance limit of 0.02%.

InfoVerified May 31, 2026

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Official source: nh.gov →

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DUI / DWI Limits in states bordering New Hampshire

The same rule in each neighboring state LawLert has verified, from that state’s own official source.

MaineInfo
In Maine the adult per se limit for OUI is 0.08% blood alcohol, drivers under 21 are under a "Not-a-drop" zero-tolerance rule covering any measurable alcohol, and commercial drivers are limited to 0.04%.
Verified May 31, 2026 · Source: maine.gov · Full Maine rule →
MassachusettsInfo
In Massachusetts the adult per se limit for OUI is 0.08% blood alcohol, drivers under 21 are held to a zero-tolerance limit of 0.02%, and commercial drivers are limited to 0.04%.
Verified May 31, 2026 · Source: mass.gov · Full Massachusetts rule →
VermontInfo
In Vermont the per se limit for adults is 0.08% blood alcohol, and drivers under 21 are held to a zero-tolerance limit of 0.02%.
Verified May 31, 2026 · Source: liquorcontrol.vermont.gov · Full Vermont rule →

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