Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 8 km or more and a ceiling of 3,000 ft or more. Only observations between sunrise and sunset are taken into account.
Marginal VFR conditions (%)
Month
Average
2024
2023
2022
January
98.7
99
100
97
February
99.2
100
100
98
March
97.2
98
99
95
April
97.3
99
96
May
98.2
99
98
June
98.6
99
98
July
99.4
99
100
August
98.6
98
100
September
98.9
98
100
October
99.1
100
98
November
99.1
99
99
December
99.1
100
98
Average
98.6
98.8
98.9
98.1
Marginal VFR conditions or better during daylight period
Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 5 km or more and a ceiling of 1,000 ft or more. Only observations between sunrise and sunset are taken into account.