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)
28
Good
South Union, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.06 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.38 μg/m³
0
55
155
255
425
605+
30.47 ppb
0
55
71
86
201
201+
1.09 ppb
0
36
76
186
605
1005+
7.71 ppb
0
54
101
361
1250
2050+
0.18 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 31
Good
3.28μg/m³
PM2.5
14.26μg/m³
PM10
32.53ppb
O3
1.08ppb
SO2
7.58ppb
NO2
0.18ppm
CO
AQI 29
Good
3.63μg/m³
PM2.5
16.85μg/m³
PM10
31.00ppb
O3
1.09ppb
SO2
7.02ppb
NO2
0.18ppm
CO
AQI 22
Good
3.64μg/m³
PM2.5
15.88μg/m³
PM10
24.44ppb
O3
1.12ppb
SO2
8.06ppb
NO2
0.16ppm
CO
AQI 28
Good
3.73μg/m³
PM2.5
16.40μg/m³
PM10
29.54ppb
O3
1.11ppb
SO2
7.33ppb
NO2
0.18ppm
CO
AQI 23
Good
3.71μg/m³
PM2.5
16.50μg/m³
PM10
24.80ppb
O3
1.11ppb
SO2
8.29ppb
NO2
0.16ppm
CO
AQI 26
Good
3.92μg/m³
PM2.5
17.60μg/m³
PM10
27.86ppb
O3
0.98ppb
SO2
8.74ppb
NO2
0.16ppm
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 03:00:00, 2026-01-22.
The best air quality in South Union, Pennsylvania was observed at 04:00:00 on 2026-01-23.
The air quality in South Union, Pennsylvania right now is Good, with an AQI of 28.
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 3.064 μg/m3.
South Union, Pennsylvania currently has a PM10 concentration of 12.384 μg/m3.
The current carbon monoxide (CO) level in South Union, Pennsylvania is 0.177 ppm.
The current sulfur dioxide (SO2) concentration in South Union, Pennsylvania is 1.088 ppb.
South Union, Pennsylvania currently has an ozone (O3) concentration of 30.473 ppm.
The current level of nitrogen dioxide (NO2) in South Union, Pennsylvania is 7.706 ppb.
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