Stay updated with real-time air quality in Glastonbury, Connecticut 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)
23
Good
Glastonbury, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.14 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
2.61 μg/m³
0
55
155
255
425
605+
24.81 ppb
0
55
71
86
201
201+
0.37 ppb
0
36
76
186
605
1005+
3.08 ppb
0
54
101
361
1250
2050+
0.11 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Glastonbury, Connecticut
Glastonbury, Connecticut
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AQI 22
Good
2.91μg/m³
PM2.5
4.82μg/m³
PM10
23.54ppb
O3
0.23ppb
SO2
7.41ppb
NO2
0.11ppm
CO
AQI 21
Good
3.00μg/m³
PM2.5
10.23μg/m³
PM10
23.08ppb
O3
0.24ppb
SO2
7.41ppb
NO2
0.12ppm
CO
AQI 22
Good
2.85μg/m³
PM2.5
4.39μg/m³
PM10
23.78ppb
O3
0.23ppb
SO2
6.43ppb
NO2
0.11ppm
CO
AQI 25
Good
2.98μg/m³
PM2.5
7.21μg/m³
PM10
27.35ppb
O3
0.24ppb
SO2
7.30ppb
NO2
0.12ppm
CO
AQI 25
Good
2.87μg/m³
PM2.5
8.67μg/m³
PM10
27.42ppb
O3
0.26ppb
SO2
7.45ppb
NO2
0.14ppm
CO
AQI 24
Good
2.88μg/m³
PM2.5
8.76μg/m³
PM10
26.12ppb
O3
0.25ppb
SO2
7.76ppb
NO2
0.13ppm
CO
Air quality data and pollutant measurements for Connecticut, 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 Glastonbury, Connecticut is updated every hour.
The worst air quality in Glastonbury, Connecticut in the last 24 hours was observed at 01:00:00 on 2025-11-16.
In the last 24 hrs, the best air quality in Glastonbury, Connecticut was observed at 05:00:00 on 2025-11-16.
The current air quality in Glastonbury, Connecticut is 23, categorized as Good based on real-time data.
The most common pollutant in Glastonbury, Connecticut is O3.
If the air quality in Glastonbury, Connecticut is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Glastonbury, Connecticut is 1.138 μg/m3.
The current PM10 concentration at Glastonbury, Connecticut is 2.613 μg/m3.
The current carbon monoxide (CO) concentration at Glastonbury, Connecticut is 0.108 ppm.
The current sulfur dioxide (SO2) concentration at Glastonbury, Connecticut is 0.366 ppb.
The current ozone (O3) concentration at Glastonbury, Connecticut is 24.807 ppm.
The current nitrogen dioxide (NO2) concentration at Glastonbury, Connecticut is 3.084 ppb.
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