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  4. Merrimack County
  5. Hopkinton

Hopkinton

Merrimack County, New Hampshire

2026-05-12 17:00
AQHI (Canada)
Low
Pollutants|Pollens
O3
μg/m³
72.6
PM10
μg/m³
3.3
PM2.5
μg/m³
1.5
SO2
μg/m³
1.8
NO2
μg/m³
0.6
Weather
  • ℃
  • ℉
14℃
37%
13 kph
6 of 11
Historical Data
  • Hourly
  • Daily
  • AQHI (Canada)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • SO2
  • NO2

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