Overall: how good is the weather today?

GoDay's Overall rating is the average of all 17 activity ratings for your spot: one number for how good the day is for getting outside, whatever you do.

The page shows it right now and for each of the next 7 days, with the weather behind it: temperature, wind, rain, UV, air quality, visibility, daylight and magnetic storms. They're shown as they are and don't change the rating.

Questions

What are magnetic storms?

Bursts of particles from the sun shake Earth's magnetic field. NOAA measures it on a 0 to 9 scale (Kp), and 5 or more is a storm. Storms can make GPS less accurate and show auroras further from the poles than usual. GoDay shows NOAA's forecast, but it doesn't change any rating.

Why doesn't Overall match my activity?

Overall averages every activity, so a calm, cold day can be great for running and poor for the beach. Open an activity for its own rating and best time.