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)
60
Moderate
Port Chester, New York
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
14.47 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
44.48 μg/m³
0
55
155
255
425
605+
4.47 ppb
0
55
71
86
201
201+
0.53 ppb
0
36
76
186
605
1005+
14.71 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Port Chester, New York
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AQI 54
Moderate
10.62μg/m³
PM2.5
40.29μg/m³
PM10
7.88ppb
O3
0.40ppb
SO2
15.23ppb
NO2
0.29ppm
CO
AQI 52
Moderate
9.53μg/m³
PM2.5
30.07μg/m³
PM10
5.82ppb
O3
0.40ppb
SO2
15.25ppb
NO2
0.28ppm
CO
AQI 54
Moderate
10.74μg/m³
PM2.5
42.44μg/m³
PM10
8.72ppb
O3
0.40ppb
SO2
15.22ppb
NO2
0.29ppm
CO
AQI 56
Moderate
11.70μg/m³
PM2.5
46.50μg/m³
PM10
8.08ppb
O3
0.40ppb
SO2
15.36ppb
NO2
0.30ppm
CO
AQI 44
Good
7.95μg/m³
PM2.5
34.43μg/m³
PM10
12.76ppb
O3
0.40ppb
SO2
14.71ppb
NO2
0.29ppm
CO
AQI 52
Moderate
10.23μg/m³
PM2.5
43.17μg/m³
PM10
10.20ppb
O3
0.40ppb
SO2
15.15ppb
NO2
0.30ppm
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 10:00:00 on 2026-03-08.
In the last 24 hours, the best air quality in Port Chester, New York was observed at 09:00:00 on 2026-03-07.
As of now, the AQI in Port Chester, New York is 60, indicating Moderate 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 14.474 μg/m3.
The PM10 concentration in Port Chester, New York is 44.483 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Port Chester, New York is 0.29 ppm.
Currently, Port Chester, New York has a sulfur dioxide (SO2) concentration of 0.529 ppb.
The current ozone (O3) level in Port Chester, New York at the moment is 4.471 ppm.
Nitrogen dioxide (NO2) level in Port Chester, New York at the moment is 14.712 ppb.
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