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)
41
Good
Meriden, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.95 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.65 μg/m³
0
55
155
255
425
605+
44.35 ppb
0
55
71
86
201
201+
0.24 ppb
0
36
76
186
605
1005+
11.06 ppb
0
54
101
361
1250
2050+
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Meriden, Connecticut
Meriden, Connecticut
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AQI 44
Good
7.80μg/m³
PM2.5
30.73μg/m³
PM10
42.26ppb
O3
0.38ppb
SO2
5.69ppb
NO2
0.27ppm
CO
AQI 47
Good
7.28μg/m³
PM2.5
16.18μg/m³
PM10
51.15ppb
O3
0.38ppb
SO2
5.95ppb
NO2
0.27ppm
CO
AQI 38
Good
7.35μg/m³
PM2.5
16.68μg/m³
PM10
40.85ppb
O3
0.38ppb
SO2
5.94ppb
NO2
0.27ppm
CO
AQI 42
Good
7.35μg/m³
PM2.5
21.87μg/m³
PM10
45.33ppb
O3
0.24ppb
SO2
5.51ppb
NO2
0.29ppm
CO
AQI 39
Good
7.31μg/m³
PM2.5
13.73μg/m³
PM10
41.70ppb
O3
0.25ppb
SO2
5.74ppb
NO2
0.29ppm
CO
AQI 42
Good
7.35μg/m³
PM2.5
21.87μg/m³
PM10
45.33ppb
O3
0.24ppb
SO2
5.51ppb
NO2
0.29ppm
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 2026-08-07.
In the last 24 hours, the best air quality in Meriden, Connecticut was observed at 06:00:00 on 2026-08-08.
As of now, the AQI in Meriden, Connecticut is 48, 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 7.249 μg/m3.
The PM10 concentration in Meriden, Connecticut is 16.656 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Meriden, Connecticut is 0.271 ppm.
Currently, Meriden, Connecticut has a sulfur dioxide (SO2) concentration of 0.377 ppb.
The current ozone (O3) level in Meriden, Connecticut at the moment is 52.262 ppm.
Nitrogen dioxide (NO2) level in Meriden, Connecticut at the moment is 5.754 ppb.
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