Humidity is the amount of water vapor in the air. If there is a lot of water vapour, the humidity will be high. The higher the percentage of humidity, the wetter it will feel outside.
UV exposure index and the protection required to help keep you safe:
-No risk of UV It’s safe to stay outside.1-2Low You can safely stay outside. Consider sunscreen in direct sunlight.3-5Moderate Take care during midday hours and do not spend too much time in the sun unprotected. Sunscreen advised.6-7High Seek shade during midday hours, cover up and wear sunscreen.8-10Very high Spend time in the shade between 11am and 3pm. Shirt, sunscreen and hat are essential.11Extreme Avoid being outside during midday hours. Shirt, sunscreen and hat essential.
Visibility measures the distance at which an object can be clearly seen.
Very Poor
Less than 1km
Poor
1.1km to 4km
Moderate
4.1km to 10km
Good
10.1km to 20km
Very Good
20.1km to 40km
Excellent
Greater than 40km
Sunrise and sunset
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Sunrise and sunset
Sunrise or sunset is the moment when the top of the sun’s orb is level with the horizon. This would be when looking at it from sea level with nothing in the way and with perfect conditions.
Air pollution
No air pollution data
Air pollution
This shows the average air pollution levels for regions of the country. This can be from pollutants such as sulphur dioxide, nitrogen oxides, and particulate matter. The data is taken from Defra’s 'Daily Air Quality Index'.
This period carries much more uncertainty than usual as milder air from the Atlantic attempts to displace the cold air over the UK. On balance milder, or at least less cold conditions are likely to make some progress into the country by Monday, bringing a spell of snow for some areas, most likely central and northern parts with rain more likely across the south and west, before it either clears or dies out. Its uncertain as to whether these less cold conditions ever reach the extreme north and east, and here it may well remain cold throughout. Further into next week its likely to remain cold across the north and east, these colder condition possibly extending back into the rest of the country.
Updated:
The outlook through the latter part of January and into the start of February is typically uncertain. A broadly southwesterly regime is marginally favoured bringing changeable conditions and spells of wet, windy and mild weather are likely, potentially with some very strong winds at times. However there is a chance that drier and colder conditions could extend into the UK from the east or northeast, along with a risk of some snow.
