Stay updated with real-time air quality in Gloucester, 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)
24
Good
Gloucester, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.98 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.24 μg/m³
0
55
155
255
425
605+
25.69 ppb
0
55
71
86
201
201+
0.94 ppb
0
36
76
186
605
1005+
2.37 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Gloucester, Massachusetts
Gloucester, Massachusetts
Scroll To Air Quality MapLoading...
AQI 27
Good
3.29μg/m³
PM2.5
13.64μg/m³
PM10
29.24ppb
O3
0.94ppb
SO2
2.29ppb
NO2
0.13ppm
CO
AQI 29
Good
3.89μg/m³
PM2.5
15.66μg/m³
PM10
30.50ppb
O3
0.73ppb
SO2
1.90ppb
NO2
0.16ppm
CO
AQI 26
Good
3.91μg/m³
PM2.5
13.88μg/m³
PM10
27.80ppb
O3
0.85ppb
SO2
2.13ppb
NO2
0.16ppm
CO
AQI 29
Good
3.85μg/m³
PM2.5
15.52μg/m³
PM10
30.57ppb
O3
0.75ppb
SO2
1.69ppb
NO2
0.16ppm
CO
AQI 29
Good
3.87μg/m³
PM2.5
15.60μg/m³
PM10
30.55ppb
O3
0.74ppb
SO2
1.76ppb
NO2
0.16ppm
CO
AQI 29
Good
3.85μg/m³
PM2.5
15.52μg/m³
PM10
30.57ppb
O3
0.75ppb
SO2
1.69ppb
NO2
0.16ppm
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 Gloucester, Massachusetts is updated every hour for accuracy.
In the past 24 hours, the air quality in Gloucester, Massachusetts was at its worst at 06:00:00 on 2026-08-14.
In the last 24 hours, the best air quality in Gloucester, Massachusetts was observed at 03:00:00 on 2026-08-14.
As of now, the AQI in Gloucester, Massachusetts is 24, indicating Good conditions.
Gloucester, Massachusetts air has the highest levels of O3.
Poor air quality in Gloucester, Massachusetts means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Gloucester, Massachusetts are currently 3.982 μg/m3.
The PM10 concentration in Gloucester, Massachusetts is 13.244 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Gloucester, Massachusetts is 0.165 ppm.
Currently, Gloucester, Massachusetts has a sulfur dioxide (SO2) concentration of 0.939 ppb.
The current ozone (O3) level in Gloucester, Massachusetts at the moment is 25.693 ppm.
Nitrogen dioxide (NO2) level in Gloucester, Massachusetts at the moment is 2.371 ppb.
All Rights Reserved © Ambee Inc. 2025