Stay updated with real-time air quality in North Castle, 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)
33
Good
North Castle, New York
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.48 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.91 μg/m³
0
55
155
255
425
605+
34.90 ppb
0
55
71
86
201
201+
0.42 ppb
0
36
76
186
605
1005+
4.14 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
North Castle, New York
North Castle, New York
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AQI 35
Good
3.96μg/m³
PM2.5
12.02μg/m³
PM10
37.81ppb
O3
0.35ppb
SO2
1.94ppb
NO2
0.18ppm
CO
AQI 35
Good
3.59μg/m³
PM2.5
17.29μg/m³
PM10
37.71ppb
O3
0.32ppb
SO2
1.96ppb
NO2
0.18ppm
CO
AQI 35
Good
4.02μg/m³
PM2.5
10.83μg/m³
PM10
37.56ppb
O3
0.37ppb
SO2
1.97ppb
NO2
0.18ppm
CO
AQI 34
Good
4.38μg/m³
PM2.5
19.52μg/m³
PM10
36.51ppb
O3
0.42ppb
SO2
2.42ppb
NO2
0.19ppm
CO
AQI 34
Good
4.31μg/m³
PM2.5
19.06μg/m³
PM10
36.94ppb
O3
0.40ppb
SO2
1.89ppb
NO2
0.19ppm
CO
AQI 34
Good
3.89μg/m³
PM2.5
10.78μg/m³
PM10
37.02ppb
O3
0.34ppb
SO2
1.66ppb
NO2
0.18ppm
CO
Air quality data and pollutant measurements for New York, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for North Castle, New York is updated every hour.
The worst air quality in North Castle, New York in the last 24 hours was observed at 04:00:00 on 2026-01-24.
In the last 24 hrs, the best air quality in North Castle, New York was observed at 02:00:00 on 2026-01-24.
The current air quality in North Castle, New York is 34, categorized as Good based on real-time data.
The most common pollutant in North Castle, New York is O3.
If the air quality in North Castle, New York is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at North Castle, New York is 4.093 μg/m3.
The current PM10 concentration at North Castle, New York is 18.088 μg/m3.
The current carbon monoxide (CO) concentration at North Castle, New York is 0.187 ppm.
The current sulfur dioxide (SO2) concentration at North Castle, New York is 0.392 ppb.
The current ozone (O3) concentration at North Castle, New York is 36.693 ppm.
The current nitrogen dioxide (NO2) concentration at North Castle, New York is 2.177 ppb.
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