Air Team runs most of Chicago's emissions test stations

Air Team is the company that operates the emissions testing stations across Chicago on behalf of the Illinois Environmental Protection Agency (IEPA). When you need an emissions test in Chicago, you will go to an Air Team location—not a separate city facility or a private garage that happens to do testing. Air Team manages the equipment, schedules, and records for the program.

Chicago requires emissions testing for most vehicles registered in Cook County. Air Team stations are where that test happens. The company runs multiple locations throughout the city and surrounding areas, and each one uses the same standardized equipment and follows the same IEPA protocols.

Key Takeaways

  • Air Team operates all official emissions test stations in Chicago under contract with the Illinois Environmental Protection Agency.
  • You can find Air Team locations online through the IEPA website or by searching for "Air Team emissions Chicago" to find the station nearest you.
  • The test itself takes about 10 to 15 minutes and costs a flat fee set by the state, not by Air Team.
  • Your vehicle must pass the test to renew your registration; a failed test means you have time to repair and retest before your registration expires.
  • Air Team records your test results directly with the IEPA, so you do not need to submit paperwork yourself.

How to find an Air Team location near you

The IEPA maintains a searchable map of all emissions test stations in Illinois on its website. You can enter your zip code or address and see which Air Team stations are closest. Most Chicago residents have multiple options within a few miles.

Air Team stations are typically open during standard business hours, though hours vary by location. Some stations operate on weekdays only; others are open Saturday mornings. Check the specific station's hours before you go, because wait times can be long during peak periods (usually late morning and early afternoon on weekdays).

What happens during your emissions test

When you arrive at an Air Team station, you will check in and provide your vehicle registration and driver's license. The technician will ask you a few questions about your vehicle—mainly whether the check engine light is on and whether you have had any recent repairs. This information helps the technician understand what to look for during the test.

The actual test takes 10 to 15 minutes. Your vehicle will be connected to a dynamometer (a machine that measures emissions while your engine runs under controlled conditions). The technician will not drive your car; instead, they will operate the equipment while your vehicle sits on the machine. You will be asked to stay in the waiting area during the test.

The test measures tailpipe emissions—specifically nitrogen oxides, particulate matter, and other pollutants—and compares them against Illinois standards for your vehicle's model year and engine type. The standards are stricter for newer vehicles than for older ones.

What your test result means

You will receive a printed result when ready after the test. A pass means your vehicle meets Illinois emissions standards. Air Team sends this result to the IEPA automatically, and you can renew your vehicle registration right away. You do not need to bring the paper to the Secretary of State's office; the IEPA notifies them electronically.

A fail means your vehicle did not meet the standard. You will receive a detailed report showing which emissions were too high. This does not mean your registration is automatically cancelled. Instead, you have until your registration expires to have the vehicle repaired and retested. If you retest before expiration and pass, you can renew normally. If you do not retest or do not pass before expiration, you cannot legally renew your registration.

Some vehicles fail because of a single fixable problem—a loose gas cap, a faulty oxygen sensor, or a clogged air filter. Others fail because of more serious engine issues. The detailed report from Air Team will help a mechanic diagnose what needs repair.

The cost and what it covers

The emissions test fee is set by the state of Illinois, not by Air Team. As of recent years, the standard test costs around $30 to $35, though the exact amount can change. Air Team collects this fee at the station. This is a one-time charge per test; if you fail and need to retest, you pay the fee again.

The fee covers the test itself and the transmission of your result to the IEPA. It does not cover any repairs your vehicle might need. If your vehicle fails and you take it to a mechanic for diagnosis and repair, those costs are separate and depend on what is wrong.

What to bring and how to prepare

Bring your current vehicle registration and a valid driver's license. Your vehicle must be in drivable condition—it needs to start and run, because the test requires the engine to operate. If your vehicle will not start or is severely damaged, Air Team cannot test it.

Before you go, make sure your gas cap is tight (a loose cap is a common reason for failure). If your check engine light is on, the test may still proceed, but Air Team will note it in your record. Do not clear the check engine light right before testing; if there is a real problem, clearing it temporarily will not fix the underlying issue and your vehicle will likely fail anyway.

Arrive with enough time to wait. Even with an appointment at some locations, wait times can run 30 minutes to an hour during busy periods. Walk-ins are usually accepted, but you may wait longer.

What happens if you fail and need to retest

After a failed test, take the detailed report to a mechanic you trust. The report will tell you which emissions were high, which narrows down what might be wrong. Common repairs include replacing spark plugs, fixing vacuum leaks, replacing the oxygen sensor, or cleaning the fuel injectors.

Once repairs are done, you can return to any Air Team station to retest. You do not have to go back to the same location. Pay the test fee again and follow the same process. If you pass the retest, your result goes to the IEPA and you can renew your registration.

Keep your failed test report and your repair receipts. If you are ever questioned about why you retested, these documents show you made a good-faith effort to fix the problem.

Frequently Asked Questions

Can I make an appointment at Air Team, or is it first-come, first-served?

This varies by location. Some Air Team stations accept appointments through the IEPA website; others operate on a walk-in basis only. Check your specific station's policy before you go. Even with an appointment, you may wait, especially during peak hours.

What if my vehicle has a check engine light on?

Air Team will still test your vehicle, but the check engine light will be noted in your record. The test measures actual emissions, not whether warning lights are on. However, if the check engine light is on because of a real engine problem, your vehicle will likely fail the emissions test.

Do I need to bring my test result to the Secretary of State's office to renew my registration?

No. Air Team sends your passing result directly to the IEPA, which notifies the Secretary of State electronically. You can renew your registration online or in person without bringing any paperwork from Air Team.

How long does a retest take if I fail the first time?

The retest itself takes the same 10 to 15 minutes as the original test. How long you wait depends on the station's schedule and how busy it is that day. There is no required waiting period between a failed test and a retest; you can come back the next day if you want.

What if I move out of Chicago but still have a Chicago registration?

You must still pass an emissions test to renew a Chicago registration, because the test requirement is tied to where your vehicle is registered, not where you live. You can take the test at any Air Team station in Illinois, not just in Chicago.