The UV Index is on a scale between 0-10(10 being the most harmful). With a UV index of +10 you need to use a really strong sun screen to block any harmful UV's that will come through. Constant exposier to +10 UV Index can cause permanent skin damage and worse case skin cancer. So get out your SPF 35 for that one and be safe in the sun.
The UV index is ona scale of 0-10 (10 being the most harmful) Which means yes, 12 is harmful, so you would need a very strong sunscreen or a better choice would be to stay indoors.
The uv index
EPA
EPA
The UV index is a measurement of the strength of ultraviolet (UV) radiation from the sun at a particular place and time. It helps people understand the potential health risks of exposure to UV radiation, with higher values indicating greater risk of harm from sun exposure.
Ultraviolet (UV) radiation is a type of electromagnetic radiation that comes from the sun and can also be produced by artificial sources like tanning beds and some lamps. The UV index measures the level of UV radiation from the sun at a particular place and time, which helps to inform people about the potential risk of harm from sun exposure. The UV index is determined based on factors like the angle of the sun, cloud cover, and ozone levels in the atmosphere.
Yes, smog particles can scatter and absorb UV radiation, leading to an increase in the UV index. Additionally, smog can trap heat near the Earth's surface, creating temperature inversions that can intensify UV radiation levels.
as at 13th August, max 30C min 23C, 10% chance of rain/ thunderstorm, UV index 8
The amount of ultraviolet (UV) rays at 8pm is typically low or close to non-existent as the sun is setting or has already set. The UV index is highest during the middle of the day when the sun is at its peak. UV levels decrease in the evening and night hours.
UV radiation levels above 3 are typically seen during midday hours when the sun is at its peak intensity. This can vary based on location and time of year, but it's generally a good idea to be cautious between 10 am and 4 pm when UV levels are usually higher. You can check local forecasts or use a UV index app to monitor levels in your specific area.
National Weather Service (NWS) and the US Environmental Protection Agency (EPA)
UV is no worse for scar tissue than for normal skin.