Daylight through the yearLongest day (Jun 21): 15 h 4 min5:29 am – 8:32 pmShortest day (Dec 21): 9 h 17 min7:18 am – 4:36 pm
Sun todaySunrise –Sunset –
Natural hazardsOverall risk Relatively ModerateWeld County, CO, compared with all US countiesHigher-risk hazardsHail Relatively HighCold wave Relatively HighTornado Relatively HighStrong wind Relatively HighSource: FEMA National Risk Index (county level)
Air quality45% of days had good air in 2025163 of 365 days measured196 moderate, 6 unhealthy for sensitive groups daysMedian index 52, worst day 119main pollutant: ozoneSource: US EPA Air Quality Index, Weld County monitors, CO
Drinking waterCity of Greeleyserves 132,310 people from surface waterNo health-based violations since 20213 monitoring or reporting violations since 2021Source: US EPA Safe Drinking Water Information System, largest system serving the town
