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)
40
Good
Plymouth, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.51 μg/m³
0
55
155
255
425
605+
42.90 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
2.90 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Plymouth, Indiana
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AQI 43
Good
2.95μg/m³
PM2.5
12.15μg/m³
PM10
46.04ppb
O3
0.62ppb
SO2
3.10ppb
NO2
0.14ppm
CO
AQI 43
Good
3.01μg/m³
PM2.5
12.26μg/m³
PM10
45.81ppb
O3
0.62ppb
SO2
3.13ppb
NO2
0.14ppm
CO
AQI 44
Good
4.01μg/m³
PM2.5
17.49μg/m³
PM10
48.44ppb
O3
0.94ppb
SO2
3.13ppb
NO2
0.19ppm
CO
AQI 42
Good
3.99μg/m³
PM2.5
16.80μg/m³
PM10
45.17ppb
O3
0.47ppb
SO2
3.40ppb
NO2
0.14ppm
CO
AQI 43
Good
3.65μg/m³
PM2.5
12.21μg/m³
PM10
45.90ppb
O3
0.62ppb
SO2
3.22ppb
NO2
0.14ppm
CO
AQI 43
Good
3.84μg/m³
PM2.5
15.79μg/m³
PM10
45.73ppb
O3
0.63ppb
SO2
3.24ppb
NO2
0.14ppm
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 2026-06-11.
In the last 24 hrs, the best air quality in Plymouth, Indiana was observed at 03:00:00 on 2026-06-12.
The current air quality in Plymouth, Indiana is 40, 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 3.551 μg/m3.
The current PM10 concentration at Plymouth, Indiana is 14.512 μg/m3.
The current carbon monoxide (CO) concentration at Plymouth, Indiana is 0.187 ppm.
The current sulfur dioxide (SO2) concentration at Plymouth, Indiana is 0.649 ppb.
The current ozone (O3) concentration at Plymouth, Indiana is 42.903 ppm.
The current nitrogen dioxide (NO2) concentration at Plymouth, Indiana is 2.903 ppb.
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