Stay updated with real-time air quality in New Castle City, Pennsylvania 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
New Castle City, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.46 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
28.78 μg/m³
0
55
155
255
425
605+
22.99 ppb
0
55
71
86
201
201+
1.30 ppb
0
36
76
186
605
1005+
6.17 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
New Castle City, Pennsylvania
New Castle City, Pennsylvania
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AQI 33
Good
6.47μg/m³
PM2.5
29.08μg/m³
PM10
12.79ppb
O3
0.97ppb
SO2
7.33ppb
NO2
0.21ppm
CO
AQI 33
Good
6.28μg/m³
PM2.5
26.37μg/m³
PM10
26.06ppb
O3
1.00ppb
SO2
7.44ppb
NO2
0.21ppm
CO
AQI 49
Good
8.99μg/m³
PM2.5
14.09μg/m³
PM10
7.22ppb
O3
1.00ppb
SO2
7.58ppb
NO2
0.20ppm
CO
AQI 33
Good
6.20μg/m³
PM2.5
26.64μg/m³
PM10
26.51ppb
O3
1.00ppb
SO2
7.43ppb
NO2
0.21ppm
CO
AQI 49
Good
8.83μg/m³
PM2.5
19.31μg/m³
PM10
12.53ppb
O3
1.00ppb
SO2
7.76ppb
NO2
0.18ppm
CO
AQI 33
Good
6.48μg/m³
PM2.5
28.59μg/m³
PM10
15.38ppb
O3
0.91ppb
SO2
9.04ppb
NO2
0.21ppm
CO
The air quality data for Pennsylvania, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for New Castle City, Pennsylvania are available every hour.
New Castle City, Pennsylvania experienced its worst air quality at 02:00:00, 2026-06-08.
The best air quality in New Castle City, Pennsylvania was observed at 01:00:00 on 2026-06-08.
The air quality in New Castle City, Pennsylvania right now is Good, with an AQI of 33.
In New Castle City, Pennsylvania, PM2.5 is the most frequently found pollutant.
When air quality in New Castle City, Pennsylvania is compromised, staying indoors and wearing a mask can reduce health risks.
New Castle City, Pennsylvania currently has a PM2.5 concentration of 6.461 μg/m3.
New Castle City, Pennsylvania currently has a PM10 concentration of 28.777 μg/m3.
The current carbon monoxide (CO) level in New Castle City, Pennsylvania is 0.201 ppm.
The current sulfur dioxide (SO2) concentration in New Castle City, Pennsylvania is 1.299 ppb.
New Castle City, Pennsylvania currently has an ozone (O3) concentration of 22.986 ppm.
The current level of nitrogen dioxide (NO2) in New Castle City, Pennsylvania is 6.17 ppb.
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