Stay updated with real-time air quality in Port Chester, New York 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)
44
Good
Port Chester, New York
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.85 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
34.70 μg/m³
0
55
155
255
425
605+
30.68 ppb
0
55
71
86
201
201+
0.42 ppb
0
36
76
186
605
1005+
15.74 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Port Chester, New York
Port Chester, New York
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AQI 52
Moderate
9.66μg/m³
PM2.5
43.38μg/m³
PM10
9.69ppb
O3
0.20ppb
SO2
20.15ppb
NO2
0.32ppm
CO
AQI 54
Moderate
10.95μg/m³
PM2.5
29.76μg/m³
PM10
14.91ppb
O3
0.18ppb
SO2
21.07ppb
NO2
0.31ppm
CO
AQI 52
Moderate
9.70μg/m³
PM2.5
43.53μg/m³
PM10
9.46ppb
O3
0.20ppb
SO2
20.08ppb
NO2
0.32ppm
CO
AQI 49
Good
9.49μg/m³
PM2.5
42.84μg/m³
PM10
10.44ppb
O3
0.20ppb
SO2
20.39ppb
NO2
0.32ppm
CO
AQI 52
Moderate
10.37μg/m³
PM2.5
45.90μg/m³
PM10
6.14ppb
O3
0.19ppb
SO2
19.06ppb
NO2
0.32ppm
CO
AQI 52
Moderate
9.96μg/m³
PM2.5
44.66μg/m³
PM10
7.93ppb
O3
0.20ppb
SO2
19.89ppb
NO2
0.32ppm
CO
Air quality and pollutant data for New York, 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 Port Chester, New York is updated every hour for accuracy.
In the past 24 hours, the air quality in Port Chester, New York was at its worst at 04:00:00 on 2025-11-03.
In the last 24 hours, the best air quality in Port Chester, New York was observed at 05:00:00 on 2025-11-02.
As of now, the AQI in Port Chester, New York is 49, indicating Good conditions.
Port Chester, New York air has the highest levels of PM2.5.
Poor air quality in Port Chester, New York means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Port Chester, New York are currently 9.277 μg/m3.
The PM10 concentration in Port Chester, New York is 41.841 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Port Chester, New York is 0.316 ppm.
Currently, Port Chester, New York has a sulfur dioxide (SO2) concentration of 0.198 ppb.
The current ozone (O3) level in Port Chester, New York at the moment is 16.537 ppm.
Nitrogen dioxide (NO2) level in Port Chester, New York at the moment is 18.492 ppb.
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