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)
38
Good
Port Chester, New York
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.36 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.79 μg/m³
0
55
155
255
425
605+
35.21 ppb
0
55
71
86
201
201+
0.48 ppb
0
36
76
186
605
1005+
7.32 ppb
0
54
101
361
1250
2050+
0.26 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 38
Good
6.77μg/m³
PM2.5
22.85μg/m³
PM10
34.98ppb
O3
0.52ppb
SO2
6.78ppb
NO2
0.26ppm
CO
AQI 44
Good
7.56μg/m³
PM2.5
17.14μg/m³
PM10
34.82ppb
O3
0.46ppb
SO2
7.30ppb
NO2
0.26ppm
CO
AQI 33
Good
6.41μg/m³
PM2.5
24.17μg/m³
PM10
35.04ppb
O3
0.53ppb
SO2
6.45ppb
NO2
0.26ppm
CO
AQI 38
Good
6.81μg/m³
PM2.5
26.99μg/m³
PM10
34.80ppb
O3
0.55ppb
SO2
6.94ppb
NO2
0.26ppm
CO
AQI 33
Good
4.21μg/m³
PM2.5
18.30μg/m³
PM10
35.96ppb
O3
0.51ppb
SO2
4.11ppb
NO2
0.26ppm
CO
AQI 32
Good
5.43μg/m³
PM2.5
24.28μg/m³
PM10
35.30ppb
O3
0.55ppb
SO2
5.69ppb
NO2
0.26ppm
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 02:00:00 on 2026-08-14.
In the last 24 hours, the best air quality in Port Chester, New York was observed at 05:00:00 on 2026-08-14.
As of now, the AQI in Port Chester, New York is 38, 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 7.36 μg/m3.
The PM10 concentration in Port Chester, New York is 18.793 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Port Chester, New York is 0.258 ppm.
Currently, Port Chester, New York has a sulfur dioxide (SO2) concentration of 0.479 ppb.
The current ozone (O3) level in Port Chester, New York at the moment is 35.213 ppm.
Nitrogen dioxide (NO2) level in Port Chester, New York at the moment is 7.315 ppb.
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