Stay updated with real-time air quality in Seymour, 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)
87
Moderate
Seymour, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
20.09 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
46.35 μg/m³
0
55
155
255
425
605+
66.24 ppb
0
55
71
86
201
201+
0.37 ppb
0
36
76
186
605
1005+
8.07 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Seymour, Connecticut
Seymour, Connecticut
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AQI 87
Moderate
20.44μg/m³
PM2.5
36.42μg/m³
PM10
66.17ppb
O3
0.36ppb
SO2
7.91ppb
NO2
0.32ppm
CO
AQI 105
Unhealthy for sensitive groups
20.22μg/m³
PM2.5
58.55μg/m³
PM10
72.36ppb
O3
0.40ppb
SO2
7.81ppb
NO2
0.31ppm
CO
AQI 87
Moderate
20.44μg/m³
PM2.5
36.42μg/m³
PM10
66.17ppb
O3
0.36ppb
SO2
7.91ppb
NO2
0.32ppm
CO
AQI 87
Moderate
20.44μg/m³
PM2.5
36.42μg/m³
PM10
66.17ppb
O3
0.36ppb
SO2
7.91ppb
NO2
0.32ppm
CO
AQI 100
Moderate
20.60μg/m³
PM2.5
41.35μg/m³
PM10
70.35ppb
O3
0.41ppb
SO2
8.79ppb
NO2
0.31ppm
CO
AQI 101
Unhealthy for sensitive groups
20.40μg/m³
PM2.5
41.42μg/m³
PM10
71.13ppb
O3
0.42ppb
SO2
6.42ppb
NO2
0.32ppm
CO
Air quality measurements for Connecticut, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Seymour, Connecticut is updated on an hourly basis.
The worst air quality in Seymour, Connecticut was recorded at 12:00:00 on 2025-06-06.
The best air quality in Seymour, Connecticut was recorded at 04:00:00 on 2025-06-06.
The real-time air quality index in Seymour, Connecticut is 87, currently categorized as Moderate.
The most common pollutant in Seymour, Connecticut is O3.
If the air quality in Seymour, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Seymour, Connecticut at present are 20.086 μg/m3.
The current PM10 levels in Seymour, Connecticut are 46.353 μg/m3.
The current carbon monoxide (CO) level in Seymour, Connecticut is 0.313 ppm.
The current sulfur dioxide (SO2) levels in Seymour, Connecticut are 0.372 ppb.
The current ozone (O3) levels at Seymour, Connecticut is 66.24 ppm.
The current nitrogen dioxide (NO2) levels at Seymour, Connecticut is 8.072 ppb.
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