Stay updated with real-time air quality in Falmouth, 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)
54
Moderate
Falmouth, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.80 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
48.63 μg/m³
0
55
155
255
425
605+
26.63 ppb
0
55
71
86
201
201+
0.53 ppb
0
36
76
186
605
1005+
4.68 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Falmouth, Massachusetts
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AQI 52
Moderate
10.31μg/m³
PM2.5
31.91μg/m³
PM10
28.36ppb
O3
0.44ppb
SO2
3.05ppb
NO2
0.14ppm
CO
AQI 52
Moderate
9.85μg/m³
PM2.5
44.20μg/m³
PM10
28.73ppb
O3
0.45ppb
SO2
3.07ppb
NO2
0.14ppm
CO
AQI 44
Good
8.16μg/m³
PM2.5
37.48μg/m³
PM10
34.01ppb
O3
0.43ppb
SO2
3.24ppb
NO2
0.14ppm
CO
AQI 49
Good
8.91μg/m³
PM2.5
38.13μg/m³
PM10
28.04ppb
O3
0.50ppb
SO2
3.11ppb
NO2
0.14ppm
CO
AQI 52
Moderate
10.06μg/m³
PM2.5
41.31μg/m³
PM10
27.52ppb
O3
0.45ppb
SO2
3.06ppb
NO2
0.14ppm
CO
AQI 44
Good
8.29μg/m³
PM2.5
37.89μg/m³
PM10
34.12ppb
O3
0.42ppb
SO2
3.22ppb
NO2
0.14ppm
CO
Air quality data and pollutant measurements for Massachusetts, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Falmouth, Massachusetts is updated every hour.
The worst air quality in Falmouth, Massachusetts in the last 24 hours was observed at 05:00:00 on 2026-06-29.
In the last 24 hrs, the best air quality in Falmouth, Massachusetts was observed at 03:00:00 on 2026-06-29.
The current air quality in Falmouth, Massachusetts is 54, categorized as Moderate based on real-time data.
The most common pollutant in Falmouth, Massachusetts is PM2.5.
If the air quality in Falmouth, Massachusetts is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Falmouth, Massachusetts is 10.797 μg/m3.
The current PM10 concentration at Falmouth, Massachusetts is 48.626 μg/m3.
The current carbon monoxide (CO) concentration at Falmouth, Massachusetts is 0.165 ppm.
The current sulfur dioxide (SO2) concentration at Falmouth, Massachusetts is 0.532 ppb.
The current ozone (O3) concentration at Falmouth, Massachusetts is 26.628 ppm.
The current nitrogen dioxide (NO2) concentration at Falmouth, Massachusetts is 4.677 ppb.
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