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)
49
Good
Meriden, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.09 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
49.90 μg/m³
0
55
155
255
425
605+
17.55 ppb
0
55
71
86
201
201+
0.20 ppb
0
36
76
186
605
1005+
13.20 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Meriden, Connecticut
Meriden, Connecticut
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AQI 52
Moderate
9.96μg/m³
PM2.5
31.87μg/m³
PM10
39.98ppb
O3
0.31ppb
SO2
4.98ppb
NO2
0.21ppm
CO
AQI 54
Moderate
10.74μg/m³
PM2.5
31.64μg/m³
PM10
40.35ppb
O3
0.33ppb
SO2
6.84ppb
NO2
0.21ppm
CO
AQI 54
Moderate
10.98μg/m³
PM2.5
31.75μg/m³
PM10
37.79ppb
O3
0.34ppb
SO2
6.19ppb
NO2
0.21ppm
CO
AQI 52
Moderate
9.93μg/m³
PM2.5
24.31μg/m³
PM10
43.26ppb
O3
0.29ppb
SO2
4.53ppb
NO2
0.22ppm
CO
AQI 52
Moderate
10.44μg/m³
PM2.5
26.16μg/m³
PM10
47.05ppb
O3
0.29ppb
SO2
9.92ppb
NO2
0.22ppm
CO
AQI 52
Moderate
9.93μg/m³
PM2.5
24.31μg/m³
PM10
43.26ppb
O3
0.29ppb
SO2
4.53ppb
NO2
0.22ppm
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 09:00:00 on 2025-07-27.
In the last 24 hours, the best air quality in Meriden, Connecticut was observed at 08:00:00 on 2025-07-28.
As of now, the AQI in Meriden, Connecticut is 52, 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 10.354 μg/m3.
The PM10 concentration in Meriden, Connecticut is 18.531 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Meriden, Connecticut is 0.207 ppm.
Currently, Meriden, Connecticut has a sulfur dioxide (SO2) concentration of 0.321 ppb.
The current ozone (O3) level in Meriden, Connecticut at the moment is 41.294 ppm.
Nitrogen dioxide (NO2) level in Meriden, Connecticut at the moment is 5.681 ppb.
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