CONUS Clear-Sky Days at Solar Noon

Mean days/month · 0–3/10 sky cover · NOAA CCD 1991–2020 · FAA Class B aerodromes

January
Clear days / month
Most → Least clear
Class B aerodrome
Clear = 0–3/10 sky cover during daylight hours only.

Source: NOAA Comparative Climatic Data, 1991–2020 normals.

30 FAA Class B airports shown. Hover divisions or airports for details.