IL Emissions test

Monroe County emissions test

Get the emissions requirement cleared before you renew in Monroe County.

Last synced Mar 17, 2026, 7:17 AM UTC from official source .

Core Illinois emissions thresholds are source-backed, but current testing-site coverage is delegated to the official Illinois Air Team resources rather than a normalized station list.

What to know

Before you go

Testing required Yes This county can hold up renewal until you clear the test.

Typical fee Varies Fees vary by station or vehicle.

Gas vehicles Gas vehicles model year 1996 or newer • new vehicles exempt for the first 4 registrations Use this if the vehicle is gas, hybrid, or another covered light-duty type.

Diesel vehicles Diesel vehicles are not subject to emissions testing Use this if the vehicle is diesel-powered.

Exemptions

diesel-powered vehicles
electric vehicles
motorcycles

Stations

Official testing resources

Find a station

Illinois publishes Monroe County emissions coverage through the Illinois Air Team program, but current station availability is delegated to the official testing resources.

Use the official station finder for live locations.

Do this now

Finish emissions first

Open the official station finder or official county rule.
Complete the test or waiver step that applies to your vehicle.
Go back to Illinois renewal once the requirement is cleared.

Find a station Open Illinois renewal