Stay updated with real-time air quality in New Haven, 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)
64
Moderate
New Haven, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
11.88 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.21 μg/m³
0
55
155
255
425
605+
58.95 ppb
0
55
71
86
201
201+
0.40 ppb
0
36
76
186
605
1005+
25.04 ppb
0
54
101
361
1250
2050+
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
New Haven, Connecticut
New Haven, Connecticut
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AQI 62
Moderate
14.88μg/m³
PM2.5
34.59μg/m³
PM10
11.00ppb
O3
0.50ppb
SO2
20.61ppb
NO2
0.33ppm
CO
AQI 62
Moderate
14.54μg/m³
PM2.5
30.55μg/m³
PM10
9.86ppb
O3
0.41ppb
SO2
21.06ppb
NO2
0.31ppm
CO
AQI 62
Moderate
14.70μg/m³
PM2.5
33.26μg/m³
PM10
12.58ppb
O3
0.46ppb
SO2
19.19ppb
NO2
0.33ppm
CO
AQI 60
Moderate
14.15μg/m³
PM2.5
51.33μg/m³
PM10
19.93ppb
O3
0.58ppb
SO2
20.01ppb
NO2
0.37ppm
CO
AQI 60
Moderate
14.46μg/m³
PM2.5
33.52μg/m³
PM10
11.89ppb
O3
0.44ppb
SO2
20.40ppb
NO2
0.33ppm
CO
AQI 62
Moderate
14.57μg/m³
PM2.5
32.65μg/m³
PM10
11.75ppb
O3
0.43ppb
SO2
19.68ppb
NO2
0.33ppm
CO
Air quality measurements for Connecticut, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for New Haven, Connecticut is updated on an hourly basis.
The worst air quality in New Haven, Connecticut was recorded at 02:00:00 on 2025-07-29.
The best air quality in New Haven, Connecticut was recorded at 09:00:00 on 2025-07-28.
The real-time air quality index in New Haven, Connecticut is 64, currently categorized as Moderate.
The most common pollutant in New Haven, Connecticut is PM2.5.
If the air quality in New Haven, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in New Haven, Connecticut at present are 16.135 μg/m3.
The current PM10 levels in New Haven, Connecticut are 34.111 μg/m3.
The current carbon monoxide (CO) level in New Haven, Connecticut is 0.4 ppm.
The current sulfur dioxide (SO2) levels in New Haven, Connecticut are 1.384 ppb.
The current ozone (O3) levels at New Haven, Connecticut is 17.159 ppm.
The current nitrogen dioxide (NO2) levels at New Haven, Connecticut is 40.762 ppb.
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