Stay updated with real-time air quality in Middlesex, New Jersey 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)
29
Good
Middlesex, New Jersey
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.94 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.19 μg/m³
0
55
155
255
425
605+
31.25 ppb
0
55
71
86
201
201+
0.59 ppb
0
36
76
186
605
1005+
3.68 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Middlesex, New Jersey
Middlesex, New Jersey
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AQI 29
Good
3.94μg/m³
PM2.5
8.19μg/m³
PM10
31.25ppb
O3
0.59ppb
SO2
3.68ppb
NO2
0.14ppm
CO
AQI 28
Good
3.31μg/m³
PM2.5
10.60μg/m³
PM10
30.31ppb
O3
0.67ppb
SO2
2.93ppb
NO2
0.14ppm
CO
AQI 29
Good
4.35μg/m³
PM2.5
13.03μg/m³
PM10
31.47ppb
O3
0.60ppb
SO2
3.71ppb
NO2
0.14ppm
CO
AQI 30
Good
4.03μg/m³
PM2.5
8.17μg/m³
PM10
31.77ppb
O3
0.69ppb
SO2
3.69ppb
NO2
0.14ppm
CO
AQI 30
Good
4.21μg/m³
PM2.5
13.02μg/m³
PM10
31.78ppb
O3
0.66ppb
SO2
3.74ppb
NO2
0.14ppm
CO
AQI 30
Good
4.03μg/m³
PM2.5
8.17μg/m³
PM10
31.77ppb
O3
0.69ppb
SO2
3.69ppb
NO2
0.14ppm
CO
The air quality data for New Jersey, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Middlesex, New Jersey are available every hour.
Middlesex, New Jersey experienced its worst air quality at 09:00:00, 2026-01-23.
The best air quality in Middlesex, New Jersey was observed at 12:00:00 on 2026-01-23.
The air quality in Middlesex, New Jersey right now is Good, with an AQI of 29.
In Middlesex, New Jersey, O3 is the most frequently found pollutant.
When air quality in Middlesex, New Jersey is compromised, staying indoors and wearing a mask can reduce health risks.
Middlesex, New Jersey currently has a PM2.5 concentration of 3.941 μg/m3.
Middlesex, New Jersey currently has a PM10 concentration of 8.194 μg/m3.
The current carbon monoxide (CO) level in Middlesex, New Jersey is 0.145 ppm.
The current sulfur dioxide (SO2) concentration in Middlesex, New Jersey is 0.592 ppb.
Middlesex, New Jersey currently has an ozone (O3) concentration of 31.245 ppm.
The current level of nitrogen dioxide (NO2) in Middlesex, New Jersey is 3.681 ppb.
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