Stay updated with real-time air quality in Waterford, 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)
21
Good
Waterford, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.43 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.02 μg/m³
0
55
155
255
425
605+
23.09 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
4.30 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Waterford, Connecticut
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AQI 27
Good
4.79μg/m³
PM2.5
7.99μg/m³
PM10
27.61ppb
O3
0.27ppb
SO2
5.66ppb
NO2
0.20ppm
CO
AQI 27
Good
4.79μg/m³
PM2.5
7.99μg/m³
PM10
27.61ppb
O3
0.27ppb
SO2
5.66ppb
NO2
0.20ppm
CO
AQI 25
Good
4.23μg/m³
PM2.5
9.39μg/m³
PM10
27.41ppb
O3
0.27ppb
SO2
5.64ppb
NO2
0.18ppm
CO
AQI 26
Good
4.41μg/m³
PM2.5
8.00μg/m³
PM10
27.67ppb
O3
0.28ppb
SO2
5.59ppb
NO2
0.20ppm
CO
AQI 26
Good
4.23μg/m³
PM2.5
8.19μg/m³
PM10
27.97ppb
O3
0.28ppb
SO2
5.59ppb
NO2
0.22ppm
CO
AQI 26
Good
3.00μg/m³
PM2.5
8.60μg/m³
PM10
27.63ppb
O3
0.27ppb
SO2
5.67ppb
NO2
0.21ppm
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 Waterford, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Waterford, Connecticut was at its worst at 04:00:00 on 2026-02-11.
In the last 24 hours, the best air quality in Waterford, Connecticut was observed at 12:00:00 on 2026-02-12.
As of now, the AQI in Waterford, Connecticut is 21, indicating Good conditions.
Waterford, Connecticut air has the highest levels of O3.
Poor air quality in Waterford, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Waterford, Connecticut are currently 3.432 μg/m3.
The PM10 concentration in Waterford, Connecticut is 6.016 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Waterford, Connecticut is 0.179 ppm.
Currently, Waterford, Connecticut has a sulfur dioxide (SO2) concentration of 0.273 ppb.
The current ozone (O3) level in Waterford, Connecticut at the moment is 23.09 ppm.
Nitrogen dioxide (NO2) level in Waterford, Connecticut at the moment is 4.296 ppb.
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