Air Quality in Cheshire, New Hampshire

42
Current AQI: Good
Primary pollutant: OZONE · Updated 03/30/26
36
Median AQI (2024)
93
Max AQI (2024)
→ stable
10-Year Trend
Ozone
Primary Pollutant
302
Good Days (2024)
1
Monitoring Stations

AQI Trend (Median)

Air Quality Days by Category

Annual Summary

YearMedian AQIMax AQI Good DaysModerate DaysUnhealthy Days Ozone DaysPM2.5 Days
2024 36 93302640 223143
2023 41 1252531082 149214
2022 37 84304610 230135
2021 40 1272631001 127237
2020 37 78299670 173193
2019 35 82331340 254111
2018 36 86300650 224141
2017 37 93298660 257107
2016 37 105290751 252114
2015 44 1552241401 143222

Recent Daily AQI

DateAQICategoryPrimary Pollutant
Dec 31, 2024 36 GoodPM2.5
Dec 30, 2024 34 GoodOzone
Dec 29, 2024 70 ModeratePM2.5
Dec 28, 2024 73 ModeratePM2.5
Dec 27, 2024 64 ModeratePM2.5
Dec 26, 2024 62 ModeratePM2.5
Dec 25, 2024 46 GoodPM2.5
Dec 24, 2024 41 GoodPM2.5
Dec 23, 2024 52 ModeratePM2.5
Dec 22, 2024 33 GoodOzone
Dec 21, 2024 33 GoodOzone
Dec 20, 2024 27 GoodOzone
Dec 19, 2024 26 GoodOzone
Dec 18, 2024 31 GoodPM2.5
Dec 17, 2024 28 GoodOzone
Dec 16, 2024 57 ModeratePM2.5
Dec 15, 2024 55 ModeratePM2.5
Dec 14, 2024 53 ModeratePM2.5
Dec 13, 2024 42 GoodPM2.5
Dec 12, 2024 28 GoodOzone
Dec 11, 2024 24 GoodOzone
Dec 10, 2024 27 GoodPM2.5
Dec 9, 2024 34 GoodPM2.5
Dec 8, 2024 49 GoodPM2.5
Dec 7, 2024 28 GoodOzone
Dec 6, 2024 31 GoodOzone
Dec 5, 2024 27 GoodPM2.5
Dec 4, 2024 31 GoodOzone
Dec 3, 2024 34 GoodPM2.5
Dec 2, 2024 51 ModeratePM2.5
Dec 1, 2024 38 GoodPM2.5
Nov 30, 2024 24 GoodOzone
Nov 29, 2024 29 GoodOzone
Nov 28, 2024 31 GoodPM2.5
Nov 27, 2024 42 GoodPM2.5
Nov 26, 2024 36 GoodPM2.5
Nov 25, 2024 26 GoodPM2.5
Nov 24, 2024 27 GoodOzone
Nov 23, 2024 24 GoodOzone
Nov 22, 2024 26 GoodOzone
Nov 21, 2024 27 GoodOzone
Nov 20, 2024 52 ModeratePM2.5
Nov 19, 2024 23 GoodPM2.5
Nov 18, 2024 36 GoodPM2.5
Nov 17, 2024 52 ModeratePM2.5
Nov 16, 2024 42 GoodPM2.5
Nov 15, 2024 38 GoodPM2.5
Nov 14, 2024 48 GoodPM2.5
Nov 13, 2024 31 GoodOzone
Nov 12, 2024 31 GoodOzone
Nov 11, 2024 30 GoodOzone
Nov 10, 2024 47 GoodPM2.5
Nov 9, 2024 32 GoodOzone
Nov 8, 2024 29 GoodOzone
Nov 7, 2024 28 GoodOzone
Nov 6, 2024 31 GoodOzone
Nov 5, 2024 31 GoodPM2.5
Nov 4, 2024 37 GoodPM2.5
Nov 3, 2024 34 GoodPM2.5
Nov 2, 2024 20 GoodOzone
Nov 1, 2024 31 GoodOzone
Oct 31, 2024 52 ModeratePM2.5
Oct 30, 2024 30 GoodPM2.5
Oct 29, 2024 26 GoodPM2.5
Oct 28, 2024 29 GoodOzone
Oct 27, 2024 30 GoodOzone
Oct 26, 2024 35 GoodOzone
Oct 25, 2024 24 GoodOzone
Oct 24, 2024 27 GoodOzone
Oct 23, 2024 51 ModeratePM2.5
Oct 22, 2024 52 ModeratePM2.5
Oct 21, 2024 51 ModeratePM2.5
Oct 20, 2024 49 GoodPM2.5
Oct 19, 2024 47 GoodPM2.5
Oct 18, 2024 39 GoodPM2.5
Oct 17, 2024 32 GoodPM2.5
Oct 16, 2024 29 GoodOzone
Oct 15, 2024 52 ModeratePM2.5
Oct 14, 2024 20 GoodOzone
Oct 13, 2024 26 GoodPM2.5
Oct 12, 2024 32 GoodOzone
Oct 11, 2024 23 GoodOzone
Oct 10, 2024 19 GoodOzone
Oct 9, 2024 31 GoodOzone
Oct 8, 2024 26 GoodOzone
Oct 7, 2024 31 GoodPM2.5
Oct 6, 2024 29 GoodOzone
Oct 5, 2024 32 GoodOzone
Oct 4, 2024 31 GoodPM2.5
Oct 3, 2024 30 GoodOzone

Monitoring Stations

WATER STREET
Keene
Est. 1989-11-01
42.9305, -72.2723

Frequently Asked Questions

What is the air quality in Cheshire, New Hampshire?

Based on EPA data from 2024, Cheshire has a median Air Quality Index (AQI) of 36, which is classified as "Good." The primary pollutant is Ozone. Over the past 10 years, air quality has been stable.

Is Cheshire a good place to live for air quality?

Cheshire has a 10-year average median AQI of 38. In 2024, there were 302 days with "Good" air quality and 0 days with unhealthy conditions. No special precautions are needed for most people.

What pollutants affect Cheshire the most?

The primary pollutant driving the AQI in Cheshire is Ozone. This is monitored by 1 active EPA stations in the county. Other pollutants tracked include ozone, PM10, nitrogen dioxide, sulfur dioxide, and carbon monoxide.

How many air quality monitoring stations are in Cheshire?

There are 1 active EPA monitoring stations in Cheshire, New Hampshire. These stations continuously measure pollutant levels and contribute to the daily AQI calculations.