They crisscross our skies on nearly a daily basis, sometimes lasting only seconds and other times expanding into widespread clouds. What are contrails, how do they form and what's behind their behaviour?
Expected Max UV Observation:
This is today's expected maximum UV reading, taking today's weather into consideration.
- Take precautions - cover up, wear a hat, sunglasses and sunscreen especially if you will be outside for 30 minutes or more
- Look for shade near midday when the sun is strongest