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)
33
Good
Meriden, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.59 μg/m³
0
55
155
255
425
605+
35.37 ppb
0
55
71
86
201
201+
0.23 ppb
0
36
76
186
605
1005+
12.32 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Meriden, Connecticut
Meriden, Connecticut
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AQI 33
Good
5.90μg/m³
PM2.5
13.30μg/m³
PM10
36.13ppb
O3
0.32ppb
SO2
13.20ppb
NO2
0.22ppm
CO
AQI 33
Good
6.00μg/m³
PM2.5
14.71μg/m³
PM10
30.55ppb
O3
0.32ppb
SO2
13.06ppb
NO2
0.22ppm
CO
AQI 33
Good
5.72μg/m³
PM2.5
14.71μg/m³
PM10
36.28ppb
O3
0.34ppb
SO2
12.99ppb
NO2
0.21ppm
CO
AQI 33
Good
6.18μg/m³
PM2.5
21.42μg/m³
PM10
36.19ppb
O3
0.22ppb
SO2
15.29ppb
NO2
0.26ppm
CO
AQI 38
Good
6.09μg/m³
PM2.5
14.76μg/m³
PM10
40.82ppb
O3
0.23ppb
SO2
14.46ppb
NO2
0.26ppm
CO
AQI 33
Good
6.18μg/m³
PM2.5
21.42μg/m³
PM10
36.19ppb
O3
0.22ppb
SO2
15.29ppb
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 Meriden, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Meriden, Connecticut was at its worst at 10:00:00 on 2026-05-13.
In the last 24 hours, the best air quality in Meriden, Connecticut was observed at 01:00:00 on 2026-05-13.
As of now, the AQI in Meriden, Connecticut is 33, indicating Good 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 5.968 μg/m3.
The PM10 concentration in Meriden, Connecticut is 14.586 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Meriden, Connecticut is 0.237 ppm.
Currently, Meriden, Connecticut has a sulfur dioxide (SO2) concentration of 0.228 ppb.
The current ozone (O3) level in Meriden, Connecticut at the moment is 35.371 ppm.
Nitrogen dioxide (NO2) level in Meriden, Connecticut at the moment is 12.323 ppb.
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