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)
31
Good
Middletown, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.23 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.31 μg/m³
0
55
155
255
425
605+
34.12 ppb
0
55
71
86
201
201+
0.59 ppb
0
36
76
186
605
1005+
2.99 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Middletown, Connecticut
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AQI 27
Good
3.65μg/m³
PM2.5
10.31μg/m³
PM10
29.16ppb
O3
0.20ppb
SO2
4.43ppb
NO2
0.14ppm
CO
AQI 30
Good
3.74μg/m³
PM2.5
11.34μg/m³
PM10
31.95ppb
O3
0.19ppb
SO2
4.81ppb
NO2
0.14ppm
CO
AQI 28
Good
3.78μg/m³
PM2.5
10.32μg/m³
PM10
30.04ppb
O3
0.20ppb
SO2
4.39ppb
NO2
0.14ppm
CO
AQI 27
Good
3.50μg/m³
PM2.5
11.10μg/m³
PM10
29.10ppb
O3
0.20ppb
SO2
4.44ppb
NO2
0.16ppm
CO
AQI 28
Good
3.61μg/m³
PM2.5
10.27μg/m³
PM10
30.25ppb
O3
0.17ppb
SO2
4.83ppb
NO2
0.14ppm
CO
AQI 30
Good
3.74μg/m³
PM2.5
11.34μg/m³
PM10
31.95ppb
O3
0.19ppb
SO2
4.81ppb
NO2
0.14ppm
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 2026-02-11.
In the last 24 hours, the best air quality in Middletown, Connecticut was observed at 03:00:00 on 2026-02-12.
As of now, the AQI in Middletown, Connecticut is 28, indicating Good conditions.
Middletown, Connecticut air has the highest levels of O3.
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 3.189 μg/m3.
The PM10 concentration in Middletown, Connecticut is 15.628 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Middletown, Connecticut is 0.131 ppm.
Currently, Middletown, Connecticut has a sulfur dioxide (SO2) concentration of 0.159 ppb.
The current ozone (O3) level in Middletown, Connecticut at the moment is 29.861 ppm.
Nitrogen dioxide (NO2) level in Middletown, Connecticut at the moment is 2.977 ppb.
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