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)
19
Good
Middletown, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
2.99 μg/m³
0
55
155
255
425
605+
21.05 ppb
0
55
71
86
201
201+
0.66 ppb
0
36
76
186
605
1005+
4.01 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Middletown, Connecticut
Middletown, Connecticut
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AQI 19
Good
1.17μg/m³
PM2.5
2.92μg/m³
PM10
21.18ppb
O3
0.66ppb
SO2
4.07ppb
NO2
0.28ppm
CO
AQI 21
Good
1.23μg/m³
PM2.5
3.00μg/m³
PM10
22.53ppb
O3
0.67ppb
SO2
3.97ppb
NO2
0.27ppm
CO
AQI 20
Good
1.21μg/m³
PM2.5
5.07μg/m³
PM10
22.18ppb
O3
0.66ppb
SO2
4.20ppb
NO2
0.28ppm
CO
AQI 21
Good
1.24μg/m³
PM2.5
3.00μg/m³
PM10
22.55ppb
O3
0.65ppb
SO2
4.19ppb
NO2
0.27ppm
CO
AQI 20
Good
0.86μg/m³
PM2.5
2.71μg/m³
PM10
22.23ppb
O3
0.73ppb
SO2
4.03ppb
NO2
0.26ppm
CO
AQI 21
Good
1.23μg/m³
PM2.5
3.00μg/m³
PM10
22.53ppb
O3
0.67ppb
SO2
3.97ppb
NO2
0.27ppm
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 2026-09-28.
In the last 24 hours, the best air quality in Middletown, Connecticut was observed at 10:00:00 on 2026-09-28.
As of now, the AQI in Middletown, Connecticut is 19, 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 1.205 μg/m3.
The PM10 concentration in Middletown, Connecticut is 2.991 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Middletown, Connecticut is 0.274 ppm.
Currently, Middletown, Connecticut has a sulfur dioxide (SO2) concentration of 0.657 ppb.
The current ozone (O3) level in Middletown, Connecticut at the moment is 21.052 ppm.
Nitrogen dioxide (NO2) level in Middletown, Connecticut at the moment is 4.012 ppb.
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