Boise's Burns: City Smog Hiding UV Danger?
By Franklin Everett ShawForget the postcards and the “Famous Potato” jokes. Boise, Idaho, is hiding a secret, and it’s not buried underground. It’s beaming down from above: surprisingly intense ultraviolet (UV) radiation. Many Boiseans, lulled by the city’s perceived lack of smog compared to larger metropolitan areas, underestimate the sun’s power. This oversight can lead to serious consequences, from premature aging to increased skin cancer risk.
Boise’s high altitude (around 2,700 feet) plays a significant role. The higher you go, the less atmosphere there is to filter out harmful UV rays. Combine that with the relatively dry climate, which means fewer clouds to block the sun, and you’ve got a recipe for a higher-than-expected UV index.
So, how do you, as a Boise resident, navigate this sunny reality and protect yourself effectively? It’s time for a Boise-Specific UV Protection Plan.
First, ditch the generic sunscreen advice. SPF numbers are important, but understanding the type of sunscreen and how to apply it correctly is crucial. Look for broad-spectrum sunscreen, which protects against both UVA and UVB rays. UVB rays are primarily responsible for sunburn, while UVA rays contribute to aging and skin cancer.
A common mistake is not applying enough sunscreen. Most people only apply 25-50% of the recommended amount. You should aim for about one ounce (a shot glass full) to cover your entire body. Don’t forget often-missed areas like your ears, the back of your neck, and the tops of your feet, especially if you’re rocking sandals while strolling through the North End.
Reapplication is key, especially when engaging in outdoor activities. If you’re hiking the trails in the foothills, sweating profusely, or taking a dip in the Boise River, reapply sunscreen every two hours, or immediately after swimming or excessive sweating. Water-resistant sunscreen is helpful, but it’s not waterproof.
Timing is everything. The sun’s UV rays are strongest between 10 a.m. and 4 p.m. This is particularly important to remember when planning your outdoor adventures. If you’re heading out for a float on the Boise River, consider going earlier in the morning or later in the afternoon to avoid peak UV exposure. The same goes for hiking Table Rock or exploring the Military Reserve.
Here’s a practical example: Let’s say you’re planning a hike up Camel’s Back Park. Instead of starting at noon, aim for a 7 a.m. start. You’ll not only avoid the hottest part of the day but also significantly reduce your UV exposure. If a midday hike is unavoidable, seek out shaded trails and wear protective clothing, including a wide-brimmed hat and sunglasses.
Don’t rely solely on your gut feeling about the weather. Download a reliable weather app that provides UV index forecasts. Many apps, like WeatherBug or AccuWeather, offer this feature. Pay attention to the UV index and adjust your sun protection accordingly. A UV index of 3-7 means moderate to high risk, requiring sunscreen, protective clothing, and sunglasses. A UV index of 8 or higher indicates very high to extreme risk, demanding extra precautions, such as limiting time outdoors during peak hours.
Boise has several excellent local resources for skin health. St. Luke’s and Saint Alphonsus hospitals both have dermatology departments with experienced dermatologists who can provide personalized advice on sun protection and skin cancer screening. Consider scheduling an annual skin exam, especially if you have a family history of skin cancer or spend a lot of time outdoors.
Another often-overlooked aspect of sun protection is eye care. UV radiation can damage your eyes, leading to cataracts and other vision problems. Invest in a good pair of sunglasses that block 100% of UVA and UVB rays. Look for sunglasses with a wraparound design to provide maximum protection.
Consider the surfaces around you. Snow, water, and sand reflect UV rays, increasing your exposure. If you’re skiing at Bogus Basin in the winter, remember that the snow reflects UV radiation, making sun protection even more critical. Similarly, if you’re spending time near the Boise River or Quinn’s Pond, be aware that the water reflects UV rays.
One challenge Boiseans face is the misconception that cloudy days offer adequate protection. Clouds can block some UV rays, but they don’t block them all. You can still get sunburned on a cloudy day. Always wear sunscreen, even when it’s overcast.
Another pitfall is relying on makeup with SPF as your sole form of sun protection. While makeup with SPF is better than nothing, it’s usually not enough to provide adequate protection. You need to apply a separate sunscreen underneath your makeup to ensure you’re getting the necessary coverage.
Let’s talk about sunscreen ingredients. There are two main types of sunscreen: mineral and chemical. Mineral sunscreens contain zinc oxide and/or titanium dioxide, which create a physical barrier on the skin to block UV rays. Chemical sunscreens contain chemicals that absorb UV rays. Both types are effective, but mineral sunscreens are generally considered safer for sensitive skin and the environment.
A common mistake is applying sunscreen only when you’re going to be in direct sunlight. UV rays can penetrate through windows, so it’s important to wear sunscreen even when you’re indoors, especially if you’re sitting near a window. This is particularly relevant for those working from home in Boise, where many houses have large windows to let in natural light.
Finally, remember that sun protection is not just about sunscreen. It’s about a combination of strategies, including seeking shade, wearing protective clothing, and timing your outdoor activities wisely. By adopting a comprehensive approach to sun protection, you can enjoy all that Boise has to offer while minimizing your risk of sun damage.
So, embrace the Boise sunshine, but do it smartly. Your skin will thank you.