Live instruments in Malta · 35.844°N, 14.469°E
Hourly mean, with daily maximum and minimum marked.
Hourly mean, with daily maximum and minimum marked.
Hourly mean, daily maximum marked with its Beaufort force. Dominant direction shown per day.
Hourly totals, with each day's total above.
Hourly mean over raw samples. Daily mean shown per day.
Hourly mean over raw samples. Daily mean shown per day.
100% is a cloudless sky, 0% overcast. By day it is the share of a cloudless sky's sunlight actually reaching the weather station; by night, how far the photometer's infrared sky temperature sits below the air temperature. Same measurement the daily rings below are built from, hour by hour.
Share of each day in each sky category. % of clear-sky.
Night-time readings per day: median, interquartile range and full range. Dashed line marks the Bortle 8 threshold at 18 mag/arcsec².