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)
45
Good
Middletown, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.11 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.57 μg/m³
0
55
155
255
425
605+
48.91 ppb
0
55
71
86
201
201+
0.30 ppb
0
36
76
186
605
1005+
5.15 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Middletown, Connecticut
Scroll To Air Quality MapLoading...
AQI 44
Good
5.15μg/m³
PM2.5
14.12μg/m³
PM10
47.57ppb
O3
0.27ppb
SO2
5.52ppb
NO2
0.23ppm
CO
AQI 43
Good
5.01μg/m³
PM2.5
14.01μg/m³
PM10
46.37ppb
O3
0.27ppb
SO2
5.50ppb
NO2
0.24ppm
CO
AQI 43
Good
5.07μg/m³
PM2.5
10.97μg/m³
PM10
46.38ppb
O3
0.27ppb
SO2
6.03ppb
NO2
0.24ppm
CO
AQI 44
Good
4.99μg/m³
PM2.5
16.05μg/m³
PM10
46.70ppb
O3
0.25ppb
SO2
5.28ppb
NO2
0.23ppm
CO
AQI 44
Good
4.99μg/m³
PM2.5
14.16μg/m³
PM10
46.98ppb
O3
0.28ppb
SO2
4.50ppb
NO2
0.19ppm
CO
AQI 43
Good
5.01μg/m³
PM2.5
14.01μg/m³
PM10
46.37ppb
O3
0.27ppb
SO2
5.50ppb
NO2
0.24ppm
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 09:00:00 on 2026-03-29.
In the last 24 hours, the best air quality in Middletown, Connecticut was observed at 10:00:00 on 2026-03-29.
As of now, the AQI in Middletown, Connecticut is 44, 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 5.144 μg/m3.
The PM10 concentration in Middletown, Connecticut is 14.202 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Middletown, Connecticut is 0.224 ppm.
Currently, Middletown, Connecticut has a sulfur dioxide (SO2) concentration of 0.27 ppb.
The current ozone (O3) level in Middletown, Connecticut at the moment is 47.872 ppm.
Nitrogen dioxide (NO2) level in Middletown, Connecticut at the moment is 5.428 ppb.
All Rights Reserved © Ambee Inc. 2025