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
100.0
100
100
100
February
99.0
99
100
98
March
97.3
97
100
94
April
97.1
100
95
May
98.9
99
99
June
99.5
100
100
July
100.0
100
100
August
99.3
99
100
September
99.6
99
100
October
100.0
100
100
November
99.0
100
99
December
100.0
100
100
Average
99.1
98.8
99.5
98.9
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.