Stay updated with real-time air quality in Stamford, 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)
49
Good
Stamford, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
8.60 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.16 μg/m³
0
55
155
255
425
605+
46.80 ppb
0
55
71
86
201
201+
0.61 ppb
0
36
76
186
605
1005+
5.46 ppb
0
54
101
361
1250
2050+
0.36 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Stamford, Connecticut
Stamford, Connecticut
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AQI 49
Good
8.65μg/m³
PM2.5
20.45μg/m³
PM10
32.68ppb
O3
0.76ppb
SO2
11.32ppb
NO2
0.28ppm
CO
AQI 44
Good
7.56μg/m³
PM2.5
22.95μg/m³
PM10
32.34ppb
O3
1.01ppb
SO2
13.40ppb
NO2
0.29ppm
CO
AQI 44
Good
8.44μg/m³
PM2.5
21.02μg/m³
PM10
31.11ppb
O3
0.68ppb
SO2
13.36ppb
NO2
0.28ppm
CO
AQI 44
Good
7.55μg/m³
PM2.5
24.78μg/m³
PM10
32.15ppb
O3
1.08ppb
SO2
14.14ppb
NO2
0.29ppm
CO
AQI 44
Good
7.81μg/m³
PM2.5
15.90μg/m³
PM10
31.52ppb
O3
0.67ppb
SO2
8.04ppb
NO2
0.26ppm
CO
AQI 44
Good
7.53μg/m³
PM2.5
28.54μg/m³
PM10
31.33ppb
O3
1.21ppb
SO2
15.53ppb
NO2
0.29ppm
CO
Air quality and pollutant data for Connecticut, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Stamford, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Stamford, Connecticut was at its worst at 08:00:00 on 2025-07-09.
In the last 24 hours, the best air quality in Stamford, Connecticut was observed at 07:00:00 on 2025-07-09.
As of now, the AQI in Stamford, Connecticut is 44, indicating Good conditions.
Stamford, Connecticut air has the highest levels of PM2.5.
Poor air quality in Stamford, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Stamford, Connecticut are currently 8.098 μg/m3.
The PM10 concentration in Stamford, Connecticut is 34.421 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Stamford, Connecticut is 0.239 ppm.
Currently, Stamford, Connecticut has a sulfur dioxide (SO2) concentration of 1.119 ppb.
The current ozone (O3) level in Stamford, Connecticut at the moment is 32.219 ppm.
Nitrogen dioxide (NO2) level in Stamford, Connecticut at the moment is 13.081 ppb.
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