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  5. Hopkinton

Hopkinton

Merrimack County, New Hampshire

2026-06-21 14:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
44.3
PM10
μg/m³
6.8
PM2.5
μg/m³
4.6
CO
μg/m³
125
SO2
μg/m³
1.2
NO2
μg/m³
0.8
Weather
  • ℃
  • ℉
20℃
68%
6 kph
4 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • CO
  • SO2
  • NO2

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