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  4. Merrimack County
  5. Hopkinton

Hopkinton

Merrimack County, New Hampshire

2026-05-01 01:00
CAQI (Europe)
Low
Pollutants|Pollens
O3
μg/m³
66.7
PM10
μg/m³
6.6
PM2.5
μg/m³
1.8
NO2
μg/m³
4
CO
μg/m³
223.8
SO2
μg/m³
1.6
Weather
  • ℃
  • ℉
9℃
95%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • CO
  • SO2

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