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)
46
Good
Stamford, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.72 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
33.12 μg/m³
0
55
155
255
425
605+
50.06 ppb
0
55
71
86
201
201+
0.63 ppb
0
36
76
186
605
1005+
6.04 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Stamford, Connecticut
Stamford, Connecticut
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AQI 52
Moderate
10.21μg/m³
PM2.5
38.45μg/m³
PM10
43.06ppb
O3
0.60ppb
SO2
6.29ppb
NO2
0.26ppm
CO
AQI 44
Good
7.61μg/m³
PM2.5
23.43μg/m³
PM10
47.62ppb
O3
0.71ppb
SO2
6.29ppb
NO2
0.26ppm
CO
AQI 54
Moderate
10.98μg/m³
PM2.5
36.17μg/m³
PM10
38.15ppb
O3
0.58ppb
SO2
5.57ppb
NO2
0.26ppm
CO
AQI 49
Good
7.32μg/m³
PM2.5
36.11μg/m³
PM10
53.07ppb
O3
0.86ppb
SO2
10.89ppb
NO2
0.27ppm
CO
AQI 52
Moderate
9.74μg/m³
PM2.5
42.22μg/m³
PM10
47.96ppb
O3
0.47ppb
SO2
2.99ppb
NO2
0.23ppm
CO
AQI 49
Good
7.40μg/m³
PM2.5
33.32μg/m³
PM10
52.53ppb
O3
1.09ppb
SO2
9.97ppb
NO2
0.27ppm
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 09:00:00 on 2026-06-28.
In the last 24 hours, the best air quality in Stamford, Connecticut was observed at 10:00:00 on 2026-06-29.
As of now, the AQI in Stamford, Connecticut is 46, indicating Good conditions.
Stamford, Connecticut air has the highest levels of O3.
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 7.722 μg/m3.
The PM10 concentration in Stamford, Connecticut is 33.121 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Stamford, Connecticut is 0.261 ppm.
Currently, Stamford, Connecticut has a sulfur dioxide (SO2) concentration of 0.634 ppb.
The current ozone (O3) level in Stamford, Connecticut at the moment is 50.064 ppm.
Nitrogen dioxide (NO2) level in Stamford, Connecticut at the moment is 6.035 ppb.
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