Stay updated with real-time air quality in South Union, 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)
41
Good
South Union, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.91 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.01 μg/m³
0
55
155
255
425
605+
44.17 ppb
0
55
71
86
201
201+
0.94 ppb
0
36
76
186
605
1005+
2.87 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
South Union, Pennsylvania
South Union, Pennsylvania
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AQI 43
Good
4.02μg/m³
PM2.5
13.87μg/m³
PM10
46.45ppb
O3
0.87ppb
SO2
1.83ppb
NO2
0.24ppm
CO
AQI 43
Good
3.63μg/m³
PM2.5
15.14μg/m³
PM10
45.74ppb
O3
0.91ppb
SO2
2.10ppb
NO2
0.24ppm
CO
AQI 42
Good
4.10μg/m³
PM2.5
17.95μg/m³
PM10
45.21ppb
O3
1.01ppb
SO2
3.21ppb
NO2
0.23ppm
CO
AQI 43
Good
3.58μg/m³
PM2.5
14.82μg/m³
PM10
45.95ppb
O3
0.89ppb
SO2
1.93ppb
NO2
0.25ppm
CO
AQI 43
Good
4.35μg/m³
PM2.5
19.10μg/m³
PM10
45.56ppb
O3
1.04ppb
SO2
3.34ppb
NO2
0.22ppm
CO
AQI 39
Good
3.99μg/m³
PM2.5
17.77μg/m³
PM10
42.30ppb
O3
0.98ppb
SO2
2.38ppb
NO2
0.18ppm
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 South Union, Pennsylvania are available every hour.
South Union, Pennsylvania experienced its worst air quality at 09:00:00, 2026-07-23.
The best air quality in South Union, Pennsylvania was observed at 03:00:00 on 2026-07-23.
The air quality in South Union, Pennsylvania right now is Good, with an AQI of 41.
In South Union, Pennsylvania, O3 is the most frequently found pollutant.
When air quality in South Union, Pennsylvania is compromised, staying indoors and wearing a mask can reduce health risks.
South Union, Pennsylvania currently has a PM2.5 concentration of 3.907 μg/m3.
South Union, Pennsylvania currently has a PM10 concentration of 17.006 μg/m3.
The current carbon monoxide (CO) level in South Union, Pennsylvania is 0.241 ppm.
The current sulfur dioxide (SO2) concentration in South Union, Pennsylvania is 0.937 ppb.
South Union, Pennsylvania currently has an ozone (O3) concentration of 44.171 ppm.
The current level of nitrogen dioxide (NO2) in South Union, Pennsylvania is 2.87 ppb.
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