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)
56
Moderate
Glastonbury, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.77 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.41 μg/m³
0
55
155
255
425
605+
41.12 ppb
0
55
71
86
201
201+
0.26 ppb
0
36
76
186
605
1005+
3.71 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Glastonbury, Connecticut
Glastonbury, Connecticut
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AQI 54
Moderate
11.46μg/m³
PM2.5
23.66μg/m³
PM10
33.89ppb
O3
0.27ppb
SO2
3.86ppb
NO2
0.12ppm
CO
AQI 56
Moderate
11.64μg/m³
PM2.5
20.74μg/m³
PM10
31.98ppb
O3
0.26ppb
SO2
3.23ppb
NO2
0.13ppm
CO
AQI 56
Moderate
11.87μg/m³
PM2.5
20.88μg/m³
PM10
33.39ppb
O3
0.26ppb
SO2
3.09ppb
NO2
0.12ppm
CO
AQI 54
Moderate
11.42μg/m³
PM2.5
23.67μg/m³
PM10
34.99ppb
O3
0.27ppb
SO2
3.93ppb
NO2
0.14ppm
CO
AQI 49
Good
9.13μg/m³
PM2.5
41.29μg/m³
PM10
32.20ppb
O3
0.27ppb
SO2
4.26ppb
NO2
0.16ppm
CO
AQI 52
Moderate
10.10μg/m³
PM2.5
42.96μg/m³
PM10
34.09ppb
O3
0.27ppb
SO2
5.14ppb
NO2
0.16ppm
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 05:00:00 on 2026-06-29.
In the last 24 hrs, the best air quality in Glastonbury, Connecticut was observed at 05:00:00 on 2026-06-29.
The current air quality in Glastonbury, Connecticut is 56, 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 11.772 μg/m3.
The current PM10 concentration at Glastonbury, Connecticut is 23.41 μg/m3.
The current carbon monoxide (CO) concentration at Glastonbury, Connecticut is 0.136 ppm.
The current sulfur dioxide (SO2) concentration at Glastonbury, Connecticut is 0.262 ppb.
The current ozone (O3) concentration at Glastonbury, Connecticut is 41.122 ppm.
The current nitrogen dioxide (NO2) concentration at Glastonbury, Connecticut is 3.71 ppb.
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