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  5. Hopkinton

Hopkinton

Merrimack County, New Hampshire

2026-05-11 22:00
AQHI (Canada)
Low
Pollutants|Pollens
O3
μg/m³
89.9
PM10
μg/m³
3.3
PM2.5
μg/m³
1.4
SO2
μg/m³
1.9
NO2
μg/m³
0.8
Weather
  • ℃
  • ℉
14℃
36%
5 kph
1 of 11
Historical Data
  • Hourly
  • Daily
  • AQHI (Canada)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • SO2
  • NO2

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