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)
26
Good
Meriden, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.16 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.73 μg/m³
0
55
155
255
425
605+
27.83 ppb
0
55
71
86
201
201+
0.15 ppb
0
36
76
186
605
1005+
3.21 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Meriden, Connecticut
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AQI 26
Good
2.90μg/m³
PM2.5
11.64μg/m³
PM10
27.81ppb
O3
0.22ppb
SO2
3.68ppb
NO2
0.14ppm
CO
AQI 27
Good
2.54μg/m³
PM2.5
13.57μg/m³
PM10
28.91ppb
O3
0.21ppb
SO2
4.13ppb
NO2
0.13ppm
CO
AQI 28
Good
2.53μg/m³
PM2.5
10.79μg/m³
PM10
30.21ppb
O3
0.21ppb
SO2
4.03ppb
NO2
0.14ppm
CO
AQI 26
Good
2.97μg/m³
PM2.5
11.06μg/m³
PM10
27.82ppb
O3
0.22ppb
SO2
3.62ppb
NO2
0.13ppm
CO
AQI 27
Good
2.55μg/m³
PM2.5
7.85μg/m³
PM10
28.66ppb
O3
0.22ppb
SO2
3.54ppb
NO2
0.13ppm
CO
AQI 26
Good
2.97μg/m³
PM2.5
11.06μg/m³
PM10
27.82ppb
O3
0.22ppb
SO2
3.62ppb
NO2
0.13ppm
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 2026-02-11.
In the last 24 hours, the best air quality in Meriden, Connecticut was observed at 03:00:00 on 2026-02-12.
As of now, the AQI in Meriden, Connecticut is 26, indicating Good conditions.
Meriden, Connecticut air has the highest levels of O3.
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 3.162 μg/m3.
The PM10 concentration in Meriden, Connecticut is 8.729 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Meriden, Connecticut is 0.12 ppm.
Currently, Meriden, Connecticut has a sulfur dioxide (SO2) concentration of 0.152 ppb.
The current ozone (O3) level in Meriden, Connecticut at the moment is 27.829 ppm.
Nitrogen dioxide (NO2) level in Meriden, Connecticut at the moment is 3.215 ppb.
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