Stay updated with real-time air quality in New Castle, Indiana 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)
27
Good
New Castle, Indiana
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.07 μg/m³
0
55
155
255
425
605+
22.31 ppb
0
55
71
86
201
201+
1.29 ppb
0
36
76
186
605
1005+
6.55 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
New Castle, Indiana
New Castle, Indiana
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AQI 41
Good
6.40μg/m³
PM2.5
29.00μg/m³
PM10
44.42ppb
O3
2.15ppb
SO2
5.53ppb
NO2
0.19ppm
CO
AQI 42
Good
6.27μg/m³
PM2.5
25.38μg/m³
PM10
44.55ppb
O3
0.93ppb
SO2
5.58ppb
NO2
0.20ppm
CO
AQI 43
Good
5.47μg/m³
PM2.5
23.77μg/m³
PM10
45.81ppb
O3
1.01ppb
SO2
5.67ppb
NO2
0.20ppm
CO
AQI 38
Good
5.82μg/m³
PM2.5
21.54μg/m³
PM10
40.84ppb
O3
2.53ppb
SO2
5.42ppb
NO2
0.17ppm
CO
AQI 38
Good
7.38μg/m³
PM2.5
36.05μg/m³
PM10
37.18ppb
O3
2.27ppb
SO2
5.86ppb
NO2
0.22ppm
CO
AQI 44
Good
7.08μg/m³
PM2.5
26.92μg/m³
PM10
47.40ppb
O3
2.51ppb
SO2
5.40ppb
NO2
0.14ppm
CO
Air quality measurements for Indiana, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for New Castle, Indiana is updated on an hourly basis.
The worst air quality in New Castle, Indiana was recorded at 04:00:00 on 2025-09-03.
The best air quality in New Castle, Indiana was recorded at 03:00:00 on 2025-09-03.
The real-time air quality index in New Castle, Indiana is 43, currently categorized as Good.
The most common pollutant in New Castle, Indiana is O3.
If the air quality in New Castle, Indiana is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in New Castle, Indiana at present are 6.04 μg/m3.
The current PM10 levels in New Castle, Indiana are 25.045 μg/m3.
The current carbon monoxide (CO) level in New Castle, Indiana is 0.159 ppm.
The current sulfur dioxide (SO2) levels in New Castle, Indiana are 2.338 ppb.
The current ozone (O3) levels at New Castle, Indiana is 45.653 ppm.
The current nitrogen dioxide (NO2) levels at New Castle, Indiana is 5.885 ppb.
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