Can You Get Sunburned Through a Car Window

Yes, you can get sunburned through a car window—especially the side windows. While windshields block most UVB rays, side and rear windows often allow harmful UVA radiation to pass through, leading to skin damage over time. Protect yourself with window films, clothing, and sunscreen, even when behind the wheel.

Key Takeaways

• Side windows let in UVA rays: Unlike windshields, most side windows are not laminated and allow up to 60–70% of UVA radiation to penetrate, increasing sunburn and skin aging risks.
• Windshields offer better protection: Standard car windshields are made with laminated glass that blocks nearly all UVB and most UVA rays, reducing sunburn risk in the front seat.
• UVA causes long-term damage: Even without visible sunburn, UVA rays penetrate deep into the skin, contributing to premature aging, wrinkles, and a higher risk of skin cancer.
• Time of day and location matter: Sun exposure is strongest between 10 a.m. and 4 p.m., and drivers in sunny climates or at high altitudes face greater UV exposure.
• Window tint and films help: Applying UV-blocking window film to side windows can reduce UVA transmission by up to 99%, offering significant protection.
• Sunscreen is essential for drivers: Applying broad-spectrum SPF 30+ sunscreen on exposed arms, hands, and face can prevent sunburn and long-term skin damage during long drives.
• Children and passengers are at risk too: Kids in car seats on the side of the vehicle are especially vulnerable to UVA exposure and should be protected with shades or clothing.

Can You Get Sunburned Through a Car Window?

You’re cruising down the highway, sunglasses on, enjoying the breeze through the open window. The sun feels warm on your arm resting on the door. But here’s a question you might not have considered: can you actually get sunburned through a car window?

The short answer is yes—especially if you’re sitting by a side window. While many people assume that being inside a car protects them from the sun’s harmful rays, the reality is more complicated. Car windows don’t block all types of ultraviolet (UV) radiation, and prolonged exposure can lead to sunburn, skin damage, and even increase your risk of skin cancer over time.

Understanding how UV rays interact with car glass is key to protecting your skin. Not all windows are created equal. Windshields, side windows, and rear glass differ in composition and UV-blocking ability. And while you might not see or feel an immediate burn, the invisible damage from UVA rays can accumulate silently, leading to premature aging and long-term health concerns.

In this guide, we’ll break down exactly how sun exposure works inside a vehicle, which windows pose the greatest risk, and what you can do to stay safe—whether you’re commuting to work, taking a road trip, or just running errands on a sunny day.

How UV Rays Work and Why They Matter

To understand whether you can get sunburned through a car window, it helps to know a bit about ultraviolet (UV) radiation. The sun emits three types of UV rays: UVA, UVB, and UVC. UVC is mostly absorbed by the Earth’s atmosphere and doesn’t reach us, so we’ll focus on UVA and UVB.

UVA rays make up about 95% of the UV radiation that reaches the Earth’s surface. They have longer wavelengths and penetrate deep into the skin, reaching the dermis—the layer beneath the surface. UVA is primarily responsible for premature aging, wrinkles, and age spots. It also plays a major role in the development of skin cancer, including melanoma. The scary part? UVA rays are present all day, every day, even on cloudy days, and they pass through glass easily.

UVB rays, on the other hand, have shorter wavelengths and primarily affect the outer layer of the skin (the epidermis). They are the main cause of sunburn and direct DNA damage that can lead to skin cancer. Fortunately, UVB rays are mostly blocked by standard glass, including most car windows. However, they’re still a concern during peak sun hours and in open areas like convertibles or when windows are down.

So, while UVB is largely filtered out by car glass, UVA slips through—especially through side windows. This means you might not get a painful sunburn, but you’re still absorbing radiation that damages your skin over time.

The Difference Between UVA and UVB

Think of UVA as the “aging” ray and UVB as the “burning” ray. UVA is like a slow, steady drip of damage—it doesn’t hurt, but it adds up. UVB is more like a sudden splash—it causes redness, pain, and peeling. Both are dangerous, but in different ways.

For drivers and passengers, UVA is the bigger concern because it passes through glass and can affect you even when you don’t feel the sun’s heat. That tan you get on your left arm during your daily commute? That’s UVA at work. And while it might look healthy, it’s actually a sign of skin damage.

How Car Windows Affect UV Exposure

Not all car windows are the same when it comes to blocking UV rays. The type of glass, its thickness, and whether it’s laminated or tinted all play a role in how much radiation gets through.

Windshields are made of laminated glass—two layers of glass with a plastic layer in between. This design is meant to prevent shattering in an accident, but it also happens to block nearly all UVB rays and about 95% of UVA rays. So, if you’re sitting in the front seat, your face and upper body are relatively well protected from sunburn.

Side windows, however, are typically made of tempered glass, which is stronger than regular glass but not laminated. This means they allow significantly more UVA radiation to pass through—anywhere from 60% to 70% in many standard vehicles. That’s why your left arm might feel warmer or look darker after a long drive, especially if you’re on the driver’s side in countries where driving is on the left (like the UK or Japan).

Rear windows vary by vehicle. Some are made of laminated glass, especially in luxury or newer models, but many are tempered like side windows. This means passengers in the back—especially children in car seats—can also be exposed to high levels of UVA.

Real-World Example: The Daily Commute

Imagine you drive to work every day at 8 a.m., with the sun rising on your left. You’re wearing short sleeves, and your left arm rests on the door. Over time, that arm becomes noticeably tanner than your right. You might think it’s just a quirk, but it’s actually a sign of chronic UVA exposure.

Studies have shown that people who drive frequently—especially for long periods—develop more skin damage on the left side of their face and body. In countries where people drive on the right (like the U.S.), the left side is exposed to more sunlight. In left-driving countries, it’s the right side that shows more signs of aging.

This phenomenon has even been documented in medical literature. Dermatologists have reported cases of “dashboard dermatitis” or “driver’s tan,” where one side of the face shows significantly more wrinkles, pigmentation, and sun damage than the other.

Can You Actually Get a Sunburn Through Glass?

Now for the big question: can you get a sunburn through a car window?

The answer is nuanced. You’re unlikely to get a severe, blistering sunburn like you would lying on a beach, but mild to moderate sunburn is possible—especially with prolonged exposure.

Because side windows allow UVA and some UVB to pass through, your skin can still absorb enough radiation to cause redness, inflammation, and peeling, particularly if you’re driving for several hours on a sunny day. People with fair skin, red or blonde hair, and light eyes are at higher risk.

But even if you don’t see redness, you’re still at risk. UVA rays don’t cause immediate burns, but they penetrate deeply and cause cumulative damage. This means that every time you drive without protection, you’re adding to your lifetime UV exposure—increasing your risk of skin cancer and accelerating skin aging.

Factors That Increase Your Risk

Several factors can make you more susceptible to sun damage while driving:

• Time of day: UV radiation is strongest between 10 a.m. and 4 p.m. Driving during these hours increases your exposure.
• Geographic location: If you live in a sunny climate—like Arizona, Florida, or Southern California—UV levels are higher year-round.
• Altitude: The higher you are above sea level, the thinner the atmosphere, and the more UV reaches the surface.
• Season: Summer months bring stronger UV rays, but even in winter, UVA levels remain high, especially at high altitudes or near snow, which reflects sunlight.
• Vehicle type: Convertibles, motorcycles, and vehicles with large side windows or sunroofs offer less protection.

Who Is Most at Risk?

While anyone can be affected by UV exposure in a car, some people are at greater risk than others.

Drivers and front-seat passengers are most exposed, especially on the side facing the sun. Long-haul truck drivers, taxi drivers, and delivery workers who spend hours behind the wheel are particularly vulnerable. Studies have shown that these professionals have higher rates of skin cancer on the left side of their bodies.

Children are also at high risk. Kids in car seats are often positioned near side windows and may not understand the need for sun protection. Their skin is more sensitive, and damage during childhood significantly increases the risk of skin cancer later in life.

People with fair skin or a history of skin cancer should be extra cautious. Even small amounts of UV exposure can be harmful over time.

Passengers in the back seat are not safe either. While they may not be driving, they’re still exposed to UVA rays through side and rear windows—especially on long road trips.

Case Study: The Truck Driver’s Tan

A well-known example comes from dermatology clinics, where doctors have observed truck drivers with severe skin damage on one side of their face. One study published in the Journal of the American Academy of Dermatology documented a 69-year-old truck driver who had a basal cell carcinoma on the left side of his nose—the side constantly exposed to sunlight through his truck window. The right side of his face showed minimal signs of aging.

This case highlights how chronic, one-sided UV exposure can lead to serious skin conditions. It’s not just about looks—it’s about health.

How to Protect Yourself from Sunburn in the Car

The good news? There are several effective ways to reduce your UV exposure while driving.

Use Window Films and Tints

One of the best solutions is applying UV-blocking window film to your side and rear windows. These films are designed to block up to 99% of UVA and UVB rays without significantly reducing visibility. They come in various shades and can be professionally installed.

Look for films that specifically mention “UV protection” or “99% UV rejection.” Some high-quality films also reduce heat and glare, making your drive more comfortable.

Note: Check your local laws regarding window tinting. Some states have restrictions on how dark side windows can be, especially for front-seat passengers.

Wear Sunscreen Every Day

Yes, even in the car. Applying a broad-spectrum sunscreen with SPF 30 or higher to your face, neck, arms, and hands can make a big difference. Reapply every two hours, especially on long drives.

Choose a lightweight, non-greasy formula that won’t leave residue on your hands or steering wheel. Many dermatologists recommend keeping a small bottle of sunscreen in your car for convenience.

Dress Protectively

Wearing long sleeves, sunglasses with UV protection, and a wide-brimmed hat can significantly reduce exposure. Lightweight, breathable fabrics like cotton or moisture-wicking materials work well for driving.

For passengers, especially children, consider UV-protective clothing or window shades designed for car seats.

Use Sunshades and Window Covers

For parked cars, use windshield sunshades to reduce interior heat and UV buildup. For side windows, consider removable sunshades or mesh covers that block sunlight without obstructing the view.

Some parents use “car window shades” that attach to side windows with suction cups. These are great for protecting babies and toddlers during naps or long trips.

Park in the Shade

When possible, park your car in a garage, under a tree, or in a shaded area. This reduces the amount of UV radiation that builds up inside the vehicle and lowers your exposure when you get back in.

Consider Upgrading Your Vehicle

If you’re in the market for a new car, look for models with factory-installed UV-protective glass. Some luxury vehicles come with infrared and UV-blocking windshields and side windows as standard features.

The Long-Term Risks of Ignoring Car Sun Exposure

Ignoring sun exposure in the car isn’t just about avoiding a temporary burn. The long-term consequences can be serious.

Chronic UVA exposure leads to photoaging—premature aging of the skin caused by the sun. This includes wrinkles, sagging, age spots, and a leathery texture. These changes are often more pronounced on the side of the body that faces the window.

More importantly, UVA and UVB radiation damages the DNA in skin cells. Over time, this can lead to mutations that cause skin cancer, including basal cell carcinoma, squamous cell carcinoma, and melanoma—the deadliest form.

According to the Skin Cancer Foundation, one in five Americans will develop skin cancer by age 70. And while most people think of beach days as the main risk, daily activities like driving contribute significantly to cumulative UV exposure.

The Importance of Early Prevention

The best time to start protecting your skin is now. Damage from UV radiation is cumulative—meaning every minute counts. Even small changes, like applying sunscreen before your commute or tinting your windows, can make a big difference over decades.

Teaching children sun-safe habits early—like wearing hats in the car or using window shades—can set them up for a lifetime of healthier skin.

Conclusion

So, can you get sunburned through a car window? The answer is a clear yes—especially through side windows that allow UVA rays to pass through. While windshields offer good protection, side and rear windows often leave you exposed to harmful radiation that can cause sunburn, premature aging, and increase your risk of skin cancer.

The good news is that protecting yourself is simple and effective. By using window films, wearing sunscreen, dressing appropriately, and being mindful of your exposure, you can enjoy your time on the road without sacrificing your skin health.

Remember, sun protection isn’t just for the beach. It’s for every day—every drive, every commute, every errand. Your skin will thank you now and in the years to come.

Frequently Asked Questions

Can you get sunburned through a car windshield?

It’s unlikely. Most car windshields are made of laminated glass that blocks nearly all UVB rays and about 95% of UVA rays, significantly reducing the risk of sunburn in the front seat.

Do car side windows block UV rays?

No, most side windows are made of tempered glass that allows 60–70% of UVA rays to pass through, making them a major source of UV exposure for drivers and passengers.

Is it safe to drive without sunscreen on a cloudy day?

No. UVA rays penetrate clouds and glass, so you’re still at risk of skin damage even on overcast days. Wearing sunscreen is important year-round.

Can children get sunburned in the car?

Yes, children are especially vulnerable because their skin is more sensitive. Use window shades, protective clothing, and sunscreen to keep them safe.

Does window tint protect against UV rays?

Yes, high-quality UV-blocking window films can reduce UVA transmission by up to 99%. Make sure to choose a film that specifically blocks ultraviolet radiation.

How often should I reapply sunscreen while driving?

Reapply broad-spectrum sunscreen every two hours, especially on long drives. If you’re sweating or wiping your hands, reapply more frequently.