Daylight through the yearLongest day (Jun 21): 13 h 13 min5:49 am – 7:02 pmShortest day (Dec 21): 11 h 3 min6:51 am – 5:54 pm
Sun todaySunrise –Sunset –
ClimateWarmest month August: highs 82°F, lows 68°FColdest month January: highs 74°F, lows 62°F62 in of rain a year, on about 106 dayswettest month SeptemberSnow is rare0 days above 90°F, 0 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Aibonito 1 S, Pr Rq station, 8 mi away
Earthquakes2,414 of magnitude 3 or more within 50 miles since 1970123 of magnitude 4+, 14 of magnitude 5+Largest: magnitude 6.4 on 7 Jan 202045 mi away, near Indios, Puerto RicoMost recent: magnitude 3.1 on 20 Sep 202631 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Insufficient DataCayey Municipio, PR, compared with all US countiesSource: FEMA National Risk Index (county level)
Air quality61% of days had good air in 2025209 of 345 days measured136 moderate daysMedian index 45, worst day 99main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, nearest monitors: Catano County, PR, 23 mi away
Drinking waterFarallonserves 39,388 people from surface water6 health-based violations since 2021latest Jan 2023: surface water treatment, treatment techniqueSource: US EPA Safe Drinking Water Information System, largest system serving the town
Elevation1,843 ft562 m above sea levelSource: USGS 3D Elevation Program
Getting aroundTransit8 stops within a mileMunicipality of CayeySources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 00737 ZIP area.
