Daylight through the yearLongest day (Jun 21): 14 h 59 min5:31 am – 8:30 pmShortest day (Dec 21): 9 h 21 min7:16 am – 4:38 pm
Sun todaySunrise –Sunset –
Natural hazardsOverall risk Relatively ModerateArapahoe County, CO, compared with all US countiesHigher-risk hazardsHail Very HighLightning Very HighTornado Relatively HighStrong wind Relatively HighSource: FEMA National Risk Index (county level)
Air quality58% of days had good air in 2025212 of 365 days measured151 moderate, 2 unhealthy for sensitive groups daysMedian index 48, worst day 101main pollutant: ozoneSource: US EPA Air Quality Index, Arapahoe County monitors, CO
Drinking waterCity of Auroraserves 533,407 people from surface waterNo health-based violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
