Stay updated with real-time air quality in Keene, New Hampshire featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
38
Good
Keene, New Hampshire
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.00 μg/m³
0
55
155
255
425
605+
13.01 ppb
0
55
71
86
201
201+
0.60 ppb
0
36
76
186
605
1005+
6.28 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Keene, New Hampshire
Keene, New Hampshire
Scroll To Air Quality MapLoading...
AQI 38
Good
7.15μg/m³
PM2.5
29.61μg/m³
PM10
40.43ppb
O3
0.25ppb
SO2
2.64ppb
NO2
0.23ppm
CO
AQI 44
Good
7.66μg/m³
PM2.5
20.14μg/m³
PM10
46.30ppb
O3
0.28ppb
SO2
2.59ppb
NO2
0.23ppm
CO
AQI 43
Good
7.48μg/m³
PM2.5
23.30μg/m³
PM10
46.27ppb
O3
0.28ppb
SO2
2.34ppb
NO2
0.26ppm
CO
AQI 44
Good
8.02μg/m³
PM2.5
40.42μg/m³
PM10
46.58ppb
O3
0.27ppb
SO2
2.39ppb
NO2
0.27ppm
CO
AQI 38
Good
6.60μg/m³
PM2.5
30.00μg/m³
PM10
36.00ppb
O3
0.25ppb
SO2
2.36ppb
NO2
0.23ppm
CO
AQI 44
Good
8.43μg/m³
PM2.5
26.48μg/m³
PM10
34.52ppb
O3
0.24ppb
SO2
1.64ppb
NO2
0.25ppm
CO
Air quality measurements for New Hampshire, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Keene, New Hampshire is updated on an hourly basis.
The worst air quality in Keene, New Hampshire was recorded at 03:00:00 on 2025-07-30.
The best air quality in Keene, New Hampshire was recorded at 10:00:00 on 2025-07-30.
The real-time air quality index in Keene, New Hampshire is 38, currently categorized as Good.
The most common pollutant in Keene, New Hampshire is PM2.5.
If the air quality in Keene, New Hampshire is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Keene, New Hampshire at present are 6.7 μg/m3.
The current PM10 levels in Keene, New Hampshire are 29.993 μg/m3.
The current carbon monoxide (CO) level in Keene, New Hampshire is 0.23 ppm.
The current sulfur dioxide (SO2) levels in Keene, New Hampshire are 0.243 ppb.
The current ozone (O3) levels at Keene, New Hampshire is 34.001 ppm.
The current nitrogen dioxide (NO2) levels at Keene, New Hampshire is 1.573 ppb.
All Rights Reserved © Ambee Inc. 2025