Description:

The correct answer is:

Presence of harmful UV rays

Even on cloudy days, up to 80% of the sun's ultraviolet (UV) rays can penetrate the clouds and reach your skin. UV radiation (both UVA and UVB) is responsible for:

Sunburn

Premature skin aging

Skin cancer risk

Clouds may block some sunlight, but they don’t fully stop UV rays, which can reflect off surfaces like water, sand, and snow. That’s why sunscreen is essential every day, regardless of cloud cover.

Why not the others?

Increased pollution – While pollution can harm skin, it doesn’t replace the need for UV protection.

Higher humidity – Humidity affects skin moisture but doesn’t block UV rays.

Bottom line: Always wear broad-spectrum sunscreen (SPF 30+)—rain or shine! ☀️⛅🌧️