Stay updated with real-time air quality in Plymouth, 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)
37
Good
Plymouth, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.76 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.93 μg/m³
0
55
155
255
425
605+
40.14 ppb
0
55
71
86
201
201+
0.83 ppb
0
36
76
186
605
1005+
4.75 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Plymouth, Indiana
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AQI 34
Good
4.13μg/m³
PM2.5
18.19μg/m³
PM10
37.27ppb
O3
1.41ppb
SO2
5.53ppb
NO2
0.15ppm
CO
AQI 34
Good
4.18μg/m³
PM2.5
18.53μg/m³
PM10
37.49ppb
O3
1.40ppb
SO2
5.53ppb
NO2
0.15ppm
CO
AQI 39
Good
4.58μg/m³
PM2.5
20.64μg/m³
PM10
41.99ppb
O3
1.70ppb
SO2
5.70ppb
NO2
0.15ppm
CO
AQI 36
Good
4.62μg/m³
PM2.5
21.08μg/m³
PM10
39.13ppb
O3
1.61ppb
SO2
5.84ppb
NO2
0.14ppm
CO
AQI 37
Good
4.11μg/m³
PM2.5
18.07μg/m³
PM10
39.90ppb
O3
1.35ppb
SO2
5.57ppb
NO2
0.15ppm
CO
AQI 37
Good
4.81μg/m³
PM2.5
24.68μg/m³
PM10
39.84ppb
O3
1.56ppb
SO2
5.59ppb
NO2
0.15ppm
CO
Air quality data and pollutant measurements for Indiana, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Plymouth, Indiana is updated every hour.
The worst air quality in Plymouth, Indiana in the last 24 hours was observed at 09:00:00 on 2026-07-23.
In the last 24 hrs, the best air quality in Plymouth, Indiana was observed at 03:00:00 on 2026-07-23.
The current air quality in Plymouth, Indiana is 37, categorized as Good based on real-time data.
The most common pollutant in Plymouth, Indiana is O3.
If the air quality in Plymouth, Indiana is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Plymouth, Indiana is 4.758 μg/m3.
The current PM10 concentration at Plymouth, Indiana is 18.935 μg/m3.
The current carbon monoxide (CO) concentration at Plymouth, Indiana is 0.242 ppm.
The current sulfur dioxide (SO2) concentration at Plymouth, Indiana is 0.827 ppb.
The current ozone (O3) concentration at Plymouth, Indiana is 40.141 ppm.
The current nitrogen dioxide (NO2) concentration at Plymouth, Indiana is 4.748 ppb.
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