Stay updated with real-time air quality in New 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)
37
Good
New Castle, New York
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.77 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.71 μg/m³
0
55
155
255
425
605+
40.24 ppb
0
55
71
86
201
201+
0.15 ppb
0
36
76
186
605
1005+
2.17 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
New Castle, New York
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AQI 37
Good
4.69μg/m³
PM2.5
18.27μg/m³
PM10
40.32ppb
O3
0.15ppb
SO2
2.15ppb
NO2
0.21ppm
CO
AQI 37
Good
4.66μg/m³
PM2.5
16.39μg/m³
PM10
40.36ppb
O3
0.16ppb
SO2
2.22ppb
NO2
0.21ppm
CO
AQI 36
Good
5.31μg/m³
PM2.5
23.08μg/m³
PM10
39.41ppb
O3
0.16ppb
SO2
2.49ppb
NO2
0.21ppm
CO
AQI 37
Good
4.72μg/m³
PM2.5
15.13μg/m³
PM10
40.22ppb
O3
0.15ppb
SO2
2.62ppb
NO2
0.20ppm
CO
AQI 37
Good
4.92μg/m³
PM2.5
21.17μg/m³
PM10
39.75ppb
O3
0.15ppb
SO2
2.75ppb
NO2
0.21ppm
CO
AQI 37
Good
3.87μg/m³
PM2.5
13.86μg/m³
PM10
39.83ppb
O3
0.14ppb
SO2
2.24ppb
NO2
0.20ppm
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 New Castle, New York is updated every hour for accuracy.
In the past 24 hours, the air quality in New Castle, New York was at its worst at 11:00:00 on 2026-03-14.
In the last 24 hours, the best air quality in New Castle, New York was observed at 02:00:00 on 2026-03-14.
As of now, the AQI in New Castle, New York is 37, indicating Good conditions.
New Castle, New York air has the highest levels of O3.
Poor air quality in New Castle, New York means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in New Castle, New York are currently 4.774 μg/m3.
The PM10 concentration in New Castle, New York is 19.711 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in New Castle, New York is 0.208 ppm.
Currently, New Castle, New York has a sulfur dioxide (SO2) concentration of 0.152 ppb.
The current ozone (O3) level in New Castle, New York at the moment is 40.242 ppm.
Nitrogen dioxide (NO2) level in New Castle, New York at the moment is 2.168 ppb.
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