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)
27
Good
Glastonbury, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.02 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.77 μg/m³
0
55
155
255
425
605+
26.59 ppb
0
55
71
86
201
201+
0.14 ppb
0
36
76
186
605
1005+
9.62 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Glastonbury, Connecticut
Glastonbury, Connecticut
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AQI 60
Moderate
14.06μg/m³
PM2.5
22.61μg/m³
PM10
4.46ppb
O3
0.27ppb
SO2
21.50ppb
NO2
0.67ppm
CO
AQI 56
Moderate
11.58μg/m³
PM2.5
30.25μg/m³
PM10
4.15ppb
O3
0.20ppb
SO2
22.23ppb
NO2
0.60ppm
CO
AQI 60
Moderate
13.93μg/m³
PM2.5
21.28μg/m³
PM10
3.66ppb
O3
0.27ppb
SO2
19.19ppb
NO2
0.66ppm
CO
AQI 58
Moderate
13.46μg/m³
PM2.5
25.29μg/m³
PM10
6.36ppb
O3
0.27ppb
SO2
21.48ppb
NO2
0.60ppm
CO
AQI 49
Good
9.39μg/m³
PM2.5
29.35μg/m³
PM10
23.07ppb
O3
0.28ppb
SO2
21.04ppb
NO2
0.57ppm
CO
AQI 58
Moderate
12.82μg/m³
PM2.5
24.77μg/m³
PM10
24.60ppb
O3
0.27ppb
SO2
21.94ppb
NO2
0.58ppm
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 02:00:00 on 2025-11-03.
In the last 24 hrs, the best air quality in Glastonbury, Connecticut was observed at 03:00:00 on 2025-11-02.
The current air quality in Glastonbury, Connecticut is 60, categorized as Moderate based on real-time data.
The most common pollutant in Glastonbury, Connecticut is PM2.5.
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 14.298 μg/m3.
The current PM10 concentration at Glastonbury, Connecticut is 24.55 μg/m3.
The current carbon monoxide (CO) concentration at Glastonbury, Connecticut is 0.452 ppm.
The current sulfur dioxide (SO2) concentration at Glastonbury, Connecticut is 0.319 ppb.
The current ozone (O3) concentration at Glastonbury, Connecticut is 4.173 ppm.
The current nitrogen dioxide (NO2) concentration at Glastonbury, Connecticut is 15.454 ppb.
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