Daylight through the yearLongest day (Jun 21): 15 h 18 min5:08 am – 8:26 pmShortest day (Dec 21): 9 h 4 min7:11 am – 4:16 pm
Sun todaySunrise –Sunset –
Natural hazardsOverall risk Relatively HighMiddlesex County, MA, compared with all US countiesHigher-risk hazardsIce storm Very HighRiver flooding Relatively HighLightning Relatively HighHurricane Relatively HighSource: FEMA National Risk Index (county level)
Air quality82% of days had good air in 2025299 of 365 days measured65 moderate, 1 unhealthy for sensitive groups daysMedian index 38, worst day 105main pollutant: ozoneSource: US EPA Air Quality Index, Middlesex County monitors, MA
Drinking waterLowell Regional Water Utilityserves 120,418 people from surface waterNo health-based violations since 20211 monitoring or reporting violation since 2021Source: US EPA Safe Drinking Water Information System, largest system in the county
