Stay updated with real-time air quality in Hanover, Massachusetts 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)
43
Good
Hanover, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.25 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.16 μg/m³
0
55
155
255
425
605+
45.91 ppb
0
55
71
86
201
201+
0.44 ppb
0
36
76
186
605
1005+
7.45 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hanover, Massachusetts
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AQI 43
Good
3.29μg/m³
PM2.5
14.78μg/m³
PM10
46.47ppb
O3
0.52ppb
SO2
5.14ppb
NO2
0.21ppm
CO
AQI 42
Good
3.09μg/m³
PM2.5
14.82μg/m³
PM10
45.48ppb
O3
0.44ppb
SO2
5.15ppb
NO2
0.21ppm
CO
AQI 42
Good
4.24μg/m³
PM2.5
18.18μg/m³
PM10
44.53ppb
O3
0.49ppb
SO2
2.17ppb
NO2
0.21ppm
CO
AQI 44
Good
3.16μg/m³
PM2.5
14.85μg/m³
PM10
46.51ppb
O3
0.45ppb
SO2
5.39ppb
NO2
0.21ppm
CO
AQI 41
Good
4.36μg/m³
PM2.5
18.95μg/m³
PM10
44.23ppb
O3
0.47ppb
SO2
2.36ppb
NO2
0.21ppm
CO
AQI 41
Good
4.37μg/m³
PM2.5
18.99μg/m³
PM10
44.20ppb
O3
0.47ppb
SO2
2.39ppb
NO2
0.21ppm
CO
Air quality and pollutant data for Massachusetts, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Hanover, Massachusetts is updated every hour for accuracy.
In the past 24 hours, the air quality in Hanover, Massachusetts was at its worst at 10:00:00 on 2026-03-29.
In the last 24 hours, the best air quality in Hanover, Massachusetts was observed at 03:00:00 on 2026-03-29.
As of now, the AQI in Hanover, Massachusetts is 43, indicating Good conditions.
Hanover, Massachusetts air has the highest levels of O3.
Poor air quality in Hanover, Massachusetts means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Hanover, Massachusetts are currently 4.253 μg/m3.
The PM10 concentration in Hanover, Massachusetts is 15.156 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hanover, Massachusetts is 0.227 ppm.
Currently, Hanover, Massachusetts has a sulfur dioxide (SO2) concentration of 0.44 ppb.
The current ozone (O3) level in Hanover, Massachusetts at the moment is 45.911 ppm.
Nitrogen dioxide (NO2) level in Hanover, Massachusetts at the moment is 7.449 ppb.
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