Daylight through the yearLongest day (Jun 21): 14 h 5 min6:00 am – 8:05 pmShortest day (Dec 21): 10 h 13 min6:52 am – 5:05 pm
Sun todaySunrise –Sunset –
Natural hazardsOverall risk Relatively HighJefferson Parish, LA, compared with all US countiesHigher-risk hazardsHurricane Very HighLightning Very HighCoastal flooding Very HighHeat wave Relatively HighSource: FEMA National Risk Index (county level)
Air quality62% of days had good air in 2025227 of 365 days measured137 moderate, 1 unhealthy for sensitive groups daysMedian index 47, worst day 101main pollutant: fine particles (PM2.5)Source: US EPA Air Quality Index, Jefferson County monitors, LA
Drinking waterE Jefferson Ww District 1serves 275,163 people from surface waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system in the county
