Illinois Window Tint Laws
Chicago's mix of lake-effect winters and humid summers is hard on film — cheap dyed tint turns purple fast here. Illinois sedans run 35% all around; SUVs get more freedom in back.
Reviewed July 2026 · Passenger cars (sedans) · SUV/van difference noted below
Legal tint limits in Illinois
| Glass | Rule for passenger cars |
|---|---|
| Windshield | No tint below the AS-1 line. |
| Front side windows | 35% VLT or lighter |
| Back side windows | 35% VLT or lighter |
| Rear window | 35% VLT or lighter |
| Reflectivity | Non-reflective film only. |
| Medical exemption | Available with qualifying documentation |
What VLT means (and how police check it)
VLT — Visible Light Transmission — is the percentage of outside light that makes it through your glass. The number printed in the law is a floor: film may be that bright or brighter. Because factory glass already blocks a little light, an officer's meter reads the combineddarkness of glass plus film. A film sold as "35%" on top of factory glass can meter a few points darker — which is why professional installers measure the final result, not the box label.
Quality matters as much as darkness. Dyed films fade purple and bubble; ceramic films like ULTRASHIELD SHADOW reject heat and up to 99% of UV at any legal darkness, with no signal interference — so you get the comfort without gambling on the number.
Illinois tint FAQ
What is the darkest legal tint in Illinois?+
Can I tint my windshield in Illinois?+
Does Illinois allow medical exemptions for darker tint?+
Is ceramic tint legal in Illinois?+
Are mirrored or reflective films legal in Illinois?+
ULTRASHIELD installers in Illinois
Certified shops that install to your state's exact legal limit and register your warranty with CARFAX.
This page summarizes Illinois statute as published and was last reviewed July 2026. It is not legal advice. Laws change and local enforcement varies — confirm current rules with the Illinois DMV before tinting.
Local answers for Illinois drivers
Other states