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)
44
Good
Stamford, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.68 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.07 μg/m³
0
55
155
255
425
605+
33.86 ppb
0
55
71
86
201
201+
0.43 ppb
0
36
76
186
605
1005+
7.03 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Stamford, Connecticut
Stamford, Connecticut
Scroll To Air Quality MapLoading...
AQI 44
Good
7.74μg/m³
PM2.5
22.30μg/m³
PM10
25.38ppb
O3
0.37ppb
SO2
4.53ppb
NO2
0.25ppm
CO
AQI 44
Good
7.56μg/m³
PM2.5
17.14μg/m³
PM10
34.82ppb
O3
0.46ppb
SO2
7.30ppb
NO2
0.26ppm
CO
AQI 38
Good
6.90μg/m³
PM2.5
14.18μg/m³
PM10
26.29ppb
O3
0.36ppb
SO2
4.55ppb
NO2
0.25ppm
CO
AQI 38
Good
7.36μg/m³
PM2.5
18.79μg/m³
PM10
35.21ppb
O3
0.48ppb
SO2
7.32ppb
NO2
0.26ppm
CO
AQI 44
Good
7.95μg/m³
PM2.5
31.16μg/m³
PM10
26.12ppb
O3
0.28ppb
SO2
3.41ppb
NO2
0.22ppm
CO
AQI 38
Good
6.77μg/m³
PM2.5
22.85μg/m³
PM10
34.98ppb
O3
0.52ppb
SO2
6.78ppb
NO2
0.26ppm
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 11:00:00 on 2026-08-13.
In the last 24 hours, the best air quality in Stamford, Connecticut was observed at 04:00:00 on 2026-08-14.
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 7.676 μg/m3.
The PM10 concentration in Stamford, Connecticut is 18.075 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Stamford, Connecticut is 0.253 ppm.
Currently, Stamford, Connecticut has a sulfur dioxide (SO2) concentration of 0.434 ppb.
The current ozone (O3) level in Stamford, Connecticut at the moment is 33.856 ppm.
Nitrogen dioxide (NO2) level in Stamford, Connecticut at the moment is 7.031 ppb.
All Rights Reserved © Ambee Inc. 2025