Why Your Windshield Looks Clear but Still Causes Glare at Night

All drivers appreciate a clear windshield because it provides uninterrupted visibility. However, they still experience nighttime glare when driving in the evening or at night.

This is due to reduced optical clarity in the windshield glass and other factors, such as scratches and chips.

Common Causes of Nighttime Windshield Glare

Tiny or Fine Scratches and Micro Abrasions or Pits

Tiny scratches and micro-abrasions on your car’s windshield distort light, creating a starburst-like effect and halos around streetlights.

Get them fixed by professionals at any windshield glass repair workshop as soon as possible for unobstructed visibility. At AIS Windshield Experts, we offer expert windshield repair services to restore visibility quickly.

Invisible Road Oil Film Buildup

Road oil also contributes to nighttime glare by mixing with rainwater and slowly forming a film over the windshield. This film causes blurry vision and rainwater smears when wipers move across the windshield. As a result, you can only partially make out car shapes and other on-road objects, and streetlights can look hazy due to light distortion, especially at night.

Moisture and Condensation

Environmental factors like rainfall and winter condensation can form a water curtain or a greyish-white film on the exterior of the windshield. They can cause blurry vision and distort how light passes through the windshield.

Similarly, the greyish-white film can cause hazy, unclear vision, making it difficult to see other vehicles ahead clearly. In such cases, pull over and wipe the greyish-white film off with a clean cloth. For the rainwater curtain, use your wipers continuously.

Windshield Surface Warping

Sometimes, your windshield can warp or bend due to:

• Sudden temperature changes, such as exposure to hot and cold temperatures
• Gaps in the windshield seal
• An improperly installed or positioned windshield

These factors can cause nighttime glare because light can bend unnaturally as it passes through the windshield.

Glass Coating and Dirt and Grime Residue

You can use different types of windshield coatings to enhance their functionality today, such as water-resistant, UV-resistant and ceramic coatings.

Over time, these may wear off with regular use, which can affect how light passes through the windshield and lead to nighttime glare.

Similarly, dirt and grime buildup on your windshield can cause smears during rainfall and further compound nighttime glare.

Car Headlight Reflections

Nighttime glare can also come from reflections off oncoming car headlights. These reflections can worsen with a cracked or scratched windshield. So opting for timely windshield scratch repair in such cases is always helpful.

Wet Roads

Wet roads during monsoon or similar weather can also cause nighttime glare because light reflects off them. These roads may also affect the driver's ability to judge the road conditions correctly.

How to Reduce Nighttime Windshield Glare

• Deep-cleaning the windshield surface with an OEM-approved windshield washing solution and glass cleaner.
• Cleaning your wiper blades frequently (biannually) and replacing them if needed.
• Periodically removing unsuitable glass coatings and dirt and grime residue.

Conclusion

A windshield that looks clear can still cause nighttime glare due to dirt and grime buildup, moisture and condensation and wet roads. Regular windshield cleaning can address all these issues.

But if cleaning doesn't resolve the problem, have a professional inspect your windshield glass and suggest the right solution. At AIS Windshield Experts, we use industry-grade tools and methods to inspect car windshields for damage like scratches, chips or cracks, then promptly repair them or replace the windshield if necessary.