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  4. Merrimack County
  5. Hopkinton

Hopkinton

Merrimack County, New Hampshire

2025-12-07 12:00
CAQI (Europe)
Low
Pollutants|Pollens
O3
μg/m³
63.8
PM2.5
μg/m³
8.8
PM10
μg/m³
9.1
SO2
μg/m³
0.9
CO
μg/m³
62.8
Weather
  • ℃
  • ℉
-6℃
90%
2 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • SO2
  • CO

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