Stay updated with real-time air quality in Middletown, 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)
52
Moderate
Middletown, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
33.49 μg/m³
0
55
155
255
425
605+
42.04 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
6.18 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Middletown, Connecticut
Middletown, Connecticut
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AQI 52
Moderate
10.10μg/m³
PM2.5
42.96μg/m³
PM10
34.09ppb
O3
0.27ppb
SO2
5.14ppb
NO2
0.16ppm
CO
AQI 54
Moderate
11.36μg/m³
PM2.5
23.58μg/m³
PM10
35.02ppb
O3
0.27ppb
SO2
3.93ppb
NO2
0.15ppm
CO
AQI 54
Moderate
11.42μg/m³
PM2.5
23.67μg/m³
PM10
34.99ppb
O3
0.27ppb
SO2
3.93ppb
NO2
0.14ppm
CO
AQI 49
Good
9.13μg/m³
PM2.5
41.29μg/m³
PM10
32.20ppb
O3
0.27ppb
SO2
4.26ppb
NO2
0.16ppm
CO
AQI 54
Moderate
11.46μg/m³
PM2.5
23.05μg/m³
PM10
35.60ppb
O3
0.28ppb
SO2
4.30ppb
NO2
0.19ppm
CO
AQI 54
Moderate
11.36μg/m³
PM2.5
23.58μg/m³
PM10
35.02ppb
O3
0.27ppb
SO2
3.93ppb
NO2
0.15ppm
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 Middletown, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Middletown, Connecticut was at its worst at 03:00:00 on 2026-06-29.
In the last 24 hours, the best air quality in Middletown, Connecticut was observed at 11:00:00 on 2026-06-28.
As of now, the AQI in Middletown, Connecticut is 52, indicating Moderate conditions.
Middletown, Connecticut air has the highest levels of PM2.5.
Poor air quality in Middletown, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Middletown, Connecticut are currently 9.549 μg/m3.
The PM10 concentration in Middletown, Connecticut is 33.488 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Middletown, Connecticut is 0.171 ppm.
Currently, Middletown, Connecticut has a sulfur dioxide (SO2) concentration of 0.284 ppb.
The current ozone (O3) level in Middletown, Connecticut at the moment is 42.04 ppm.
Nitrogen dioxide (NO2) level in Middletown, Connecticut at the moment is 6.179 ppb.
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