Stay updated with real-time air quality in Meriden, 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)
60
Moderate
Meriden, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
13.98 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
41.50 μg/m³
0
55
155
255
425
605+
7.09 ppb
0
55
71
86
201
201+
0.36 ppb
0
36
76
186
605
1005+
26.45 ppb
0
54
101
361
1250
2050+
0.36 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Meriden, Connecticut
Meriden, Connecticut
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AQI 58
Moderate
13.26μg/m³
PM2.5
23.64μg/m³
PM10
8.00ppb
O3
0.35ppb
SO2
26.48ppb
NO2
0.35ppm
CO
AQI 60
Moderate
14.02μg/m³
PM2.5
41.31μg/m³
PM10
8.36ppb
O3
0.37ppb
SO2
25.94ppb
NO2
0.36ppm
CO
AQI 60
Moderate
14.02μg/m³
PM2.5
59.35μg/m³
PM10
12.34ppb
O3
0.36ppb
SO2
25.72ppb
NO2
0.35ppm
CO
AQI 58
Moderate
13.17μg/m³
PM2.5
23.65μg/m³
PM10
8.10ppb
O3
0.36ppb
SO2
26.60ppb
NO2
0.38ppm
CO
AQI 58
Moderate
13.19μg/m³
PM2.5
42.27μg/m³
PM10
19.13ppb
O3
0.37ppb
SO2
28.53ppb
NO2
0.38ppm
CO
AQI 58
Moderate
13.17μg/m³
PM2.5
23.65μg/m³
PM10
8.10ppb
O3
0.36ppb
SO2
26.60ppb
NO2
0.38ppm
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 Meriden, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Meriden, Connecticut was at its worst at 11:00:00 on 2025-12-28.
In the last 24 hours, the best air quality in Meriden, Connecticut was observed at 08:00:00 on 2025-12-28.
As of now, the AQI in Meriden, Connecticut is 60, indicating Moderate conditions.
Meriden, Connecticut air has the highest levels of PM2.5.
Poor air quality in Meriden, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Meriden, Connecticut are currently 13.984 μg/m3.
The PM10 concentration in Meriden, Connecticut is 41.501 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Meriden, Connecticut is 0.357 ppm.
Currently, Meriden, Connecticut has a sulfur dioxide (SO2) concentration of 0.359 ppb.
The current ozone (O3) level in Meriden, Connecticut at the moment is 7.093 ppm.
Nitrogen dioxide (NO2) level in Meriden, Connecticut at the moment is 26.447 ppb.
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