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)
28
Good
New Castle City, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.39 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.17 μg/m³
0
55
155
255
425
605+
30.39 ppb
0
55
71
86
201
201+
0.95 ppb
0
36
76
186
605
1005+
1.56 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
New Castle City, Pennsylvania
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AQI 28
Good
1.39μg/m³
PM2.5
6.17μg/m³
PM10
30.39ppb
O3
0.95ppb
SO2
1.56ppb
NO2
0.13ppm
CO
AQI 21
Good
1.40μg/m³
PM2.5
5.80μg/m³
PM10
23.42ppb
O3
1.03ppb
SO2
1.46ppb
NO2
0.13ppm
CO
AQI 24
Good
1.60μg/m³
PM2.5
3.01μg/m³
PM10
26.02ppb
O3
1.05ppb
SO2
1.47ppb
NO2
0.13ppm
CO
AQI 21
Good
1.40μg/m³
PM2.5
5.89μg/m³
PM10
23.22ppb
O3
1.03ppb
SO2
1.46ppb
NO2
0.13ppm
CO
AQI 26
Good
1.35μg/m³
PM2.5
4.71μg/m³
PM10
27.63ppb
O3
1.08ppb
SO2
1.48ppb
NO2
0.13ppm
CO
AQI 23
Good
1.76μg/m³
PM2.5
6.92μg/m³
PM10
25.32ppb
O3
0.84ppb
SO2
1.67ppb
NO2
0.15ppm
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 11:00:00, 2026-03-11.
The best air quality in New Castle City, Pennsylvania was observed at 06:00:00 on 2026-03-12.
The air quality in New Castle City, Pennsylvania right now is Good, with an AQI of 28.
In New Castle City, Pennsylvania, O3 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 1.386 μg/m3.
New Castle City, Pennsylvania currently has a PM10 concentration of 6.17 μg/m3.
The current carbon monoxide (CO) level in New Castle City, Pennsylvania is 0.129 ppm.
The current sulfur dioxide (SO2) concentration in New Castle City, Pennsylvania is 0.946 ppb.
New Castle City, Pennsylvania currently has an ozone (O3) concentration of 30.395 ppm.
The current level of nitrogen dioxide (NO2) in New Castle City, Pennsylvania is 1.559 ppb.
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