UV Index Today in Alexandria

UV Radiation Profile for Alexandria

Alexandria sits at 31.2° N in the subtropical zone. It is autumn there now, and the sun currently spends 11.8 hours above the horizon each day.

Alexandria at 31.2° N receives a peak summer UV index of approximately 13 on clear days — rated "Extreme." This figure is driven by the sub-tropical solar angle: the sun reaches 82° maximum altitude at summer solstice, concentrating radiation across a smaller skin surface area than at lower latitudes.

Near-overhead sun angles in Alexandria during the sunniest months mean UV strikes near-perpendicular to exposed skin — the most dangerous geometry. Even brief midday exposure can cause burns in under 10 minutes for fair skin.

UV radiation and ambient temperature don't always align — on cool overcast days, UV can still reach moderate levels while the lack of heat masks the burning risk.

Understanding UV Radiation in Alexandria

The UV index measures how quickly unprotected skin can burn in Alexandria. Our live forecast combines cloud cover, ozone levels, and solar angle for an accurate daily reading.

UV intensity in Alexandria is largely shaped by its position around 31.2° latitude — the closer to the equator, the more relentless the midday sun.

Alexandria swings between very high UV in May–September (often 9–10+) and moderate levels in November–March (typically 3–5). The shoulder months of April and October catch many people off guard with rapidly rising UV after winter.

Alexandria's practical UV "danger window" expands and contracts with the seasons. From late spring through early autumn, expect roughly six hours of midday exposure to require active protection; in winter, that window can shrink to under two hours and may sit entirely in the moderate range.

For longer outdoor sessions in Alexandria during May–September, sunscreen alone tends to underperform — pair it with a hat that shades the ears and neck, and consider UPF-rated clothing for activities like cycling, sailing or extended walking. Sunglasses with side coverage matter more here than at higher latitudes because of the steeper sun angle.

Combining sunscreen with a hat and UV-blocking sunglasses gives noticeably better protection in Alexandria than relying on SPF alone, especially during the high-UV stretches of the year.

The UV Index Scale Explained

Sun Safety Tips for Alexandria

Effective sun protection in Alexandria goes beyond just applying sunscreen. The most important strategy is timing — UV radiation follows a predictable daily curve, peaking around solar noon (approximately 12:30-1:30 PM local time). By scheduling outdoor activities before 10 AM or after 4 PM, you avoid 60-70% of the day's total UV exposure. When midday exposure is unavoidable, combine multiple protection methods: broad-spectrum sunscreen (SPF 30+), UV-blocking sunglasses, a wide-brimmed hat, and lightweight long-sleeve clothing with UPF (Ultraviolet Protection Factor) rating.

Common sunscreen mistakes include applying too little (most people use only 25-50% of the recommended amount), not reapplying every 2 hours, and missing easily burned areas like ears, neck, tops of feet, and the part line of your hair. Water-resistant sunscreen is important in Alexandria even when you're not swimming — sweat reduces sunscreen effectiveness. For children and those with fair skin, err on the side of higher SPF and more frequent reapplication.

UV and Cloud Cover: A Common Misconception

One of the most dangerous sun safety myths is that clouds protect you from UV radiation. In reality, thin or scattered clouds block only 20-40% of UV rays, and some cloud formations can actually amplify UV through scattering effects. In Alexandria, overcast days can still deliver moderate UV levels — enough to cause sunburn during prolonged outdoor exposure. This is why checking the actual UV index is more reliable than judging sun intensity by cloud cover alone. Our forecast accounts for cloud conditions to give you an accurate daily reading.

UV Index FAQ for Alexandria

When UV Is Most Dangerous in Alexandria

• •Between 10 AM and 4 PM — UV radiation peaks during midday hours regardless of temperature. This is when sunburn risk is highest.
• •Reflective surfaces (water, sand, snow) — UV bounces off these surfaces, effectively doubling your exposure even under an umbrella.
• •Partly cloudy days — thin clouds allow up to 80% of UV through, and cloud edges can actually intensify UV via scattering.
• •High altitude locations — UV increases by approximately 10% for every 1,000m of elevation gain.

What Is the UV Index?

The UV index is an international standard measurement of ultraviolet radiation strength at the Earth's surface, ranging from 0 (no risk) to 11+ (extreme danger). It was developed by the World Health Organization to help people understand when sun protection is needed. In Alexandria, the UV index varies with season, cloud cover, and time of day. A UV index of 3–5 requires sunscreen and a hat. Above 6, seek shade during midday. Above 8, limit outdoor exposure and wear protective clothing. Our daily UV forecast for Alexandria updates automatically with real-time atmospheric data.

More Weather Tools for Alexandria