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)
22
Good
Hanover, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.32 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
4.76 μg/m³
0
55
155
255
425
605+
24.34 ppb
0
55
71
86
201
201+
0.66 ppb
0
36
76
186
605
1005+
5.30 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hanover, Massachusetts
Hanover, Massachusetts
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AQI 23
Good
1.25μg/m³
PM2.5
4.76μg/m³
PM10
25.03ppb
O3
0.80ppb
SO2
5.18ppb
NO2
0.26ppm
CO
AQI 21
Good
1.52μg/m³
PM2.5
5.73μg/m³
PM10
22.88ppb
O3
0.64ppb
SO2
5.26ppb
NO2
0.26ppm
CO
AQI 24
Good
1.62μg/m³
PM2.5
6.71μg/m³
PM10
26.31ppb
O3
0.78ppb
SO2
3.28ppb
NO2
0.27ppm
CO
AQI 21
Good
1.63μg/m³
PM2.5
7.74μg/m³
PM10
23.12ppb
O3
0.63ppb
SO2
4.95ppb
NO2
0.26ppm
CO
AQI 25
Good
1.23μg/m³
PM2.5
4.95μg/m³
PM10
27.00ppb
O3
0.72ppb
SO2
3.73ppb
NO2
0.27ppm
CO
AQI 25
Good
1.21μg/m³
PM2.5
4.82μg/m³
PM10
27.02ppb
O3
0.72ppb
SO2
3.78ppb
NO2
0.27ppm
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 03:00:00 on 2026-09-28.
In the last 24 hours, the best air quality in Hanover, Massachusetts was observed at 09:00:00 on 2026-09-28.
As of now, the AQI in Hanover, Massachusetts is 22, 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 1.324 μg/m3.
The PM10 concentration in Hanover, Massachusetts is 4.76 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Hanover, Massachusetts is 0.262 ppm.
Currently, Hanover, Massachusetts has a sulfur dioxide (SO2) concentration of 0.659 ppb.
The current ozone (O3) level in Hanover, Massachusetts at the moment is 24.342 ppm.
Nitrogen dioxide (NO2) level in Hanover, Massachusetts at the moment is 5.297 ppb.
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