Stay updated with real-time air quality in Granby, 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)
62
Moderate
Granby, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
14.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
55.82 μg/m³
0
55
155
255
425
605+
50.55 ppb
0
55
71
86
201
201+
0.55 ppb
0
36
76
186
605
1005+
7.61 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Granby, Connecticut
Granby, Connecticut
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AQI 64
Moderate
16.20μg/m³
PM2.5
43.52μg/m³
PM10
57.96ppb
O3
0.59ppb
SO2
6.18ppb
NO2
0.29ppm
CO
AQI 62
Moderate
14.91μg/m³
PM2.5
49.08μg/m³
PM10
58.04ppb
O3
0.53ppb
SO2
8.25ppb
NO2
0.28ppm
CO
AQI 93
Moderate
16.60μg/m³
PM2.5
56.15μg/m³
PM10
68.06ppb
O3
0.58ppb
SO2
6.79ppb
NO2
0.29ppm
CO
AQI 100
Moderate
21.90μg/m³
PM2.5
38.51μg/m³
PM10
70.09ppb
O3
0.52ppb
SO2
11.03ppb
NO2
0.30ppm
CO
AQI 84
Moderate
16.35μg/m³
PM2.5
53.06μg/m³
PM10
64.70ppb
O3
0.50ppb
SO2
9.44ppb
NO2
0.29ppm
CO
AQI 100
Moderate
22.52μg/m³
PM2.5
39.34μg/m³
PM10
70.44ppb
O3
0.52ppb
SO2
7.94ppb
NO2
0.30ppm
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 Granby, Connecticut is updated every hour.
The worst air quality in Granby, Connecticut in the last 24 hours was observed at 01:00:00 on 2025-06-06.
In the last 24 hrs, the best air quality in Granby, Connecticut was observed at 10:00:00 on 2025-06-06.
The current air quality in Granby, Connecticut is 62, categorized as Moderate based on real-time data.
The most common pollutant in Granby, Connecticut is PM2.5.
If the air quality in Granby, Connecticut is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Granby, Connecticut is 14.503 μg/m3.
The current PM10 concentration at Granby, Connecticut is 55.817 μg/m3.
The current carbon monoxide (CO) concentration at Granby, Connecticut is 0.281 ppm.
The current sulfur dioxide (SO2) concentration at Granby, Connecticut is 0.552 ppb.
The current ozone (O3) concentration at Granby, Connecticut is 50.547 ppm.
The current nitrogen dioxide (NO2) concentration at Granby, Connecticut is 7.607 ppb.
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