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)
31
Good
Plymouth, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.46 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.80 μg/m³
0
55
155
255
425
605+
32.79 ppb
0
55
71
86
201
201+
0.60 ppb
0
36
76
186
605
1005+
2.30 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Plymouth, Indiana
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AQI 30
Good
4.01μg/m³
PM2.5
17.97μg/m³
PM10
32.06ppb
O3
0.63ppb
SO2
2.02ppb
NO2
0.14ppm
CO
AQI 30
Good
4.02μg/m³
PM2.5
18.05μg/m³
PM10
31.94ppb
O3
0.69ppb
SO2
2.06ppb
NO2
0.15ppm
CO
AQI 29
Good
5.14μg/m³
PM2.5
22.14μg/m³
PM10
31.33ppb
O3
0.71ppb
SO2
2.27ppb
NO2
0.21ppm
CO
AQI 30
Good
4.02μg/m³
PM2.5
17.08μg/m³
PM10
31.52ppb
O3
0.62ppb
SO2
1.96ppb
NO2
0.18ppm
CO
AQI 29
Good
4.19μg/m³
PM2.5
18.94μg/m³
PM10
30.84ppb
O3
0.86ppb
SO2
2.23ppb
NO2
0.18ppm
CO
AQI 28
Good
4.13μg/m³
PM2.5
16.71μg/m³
PM10
30.22ppb
O3
0.86ppb
SO2
2.25ppb
NO2
0.18ppm
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 08:00:00 on 2026-03-14.
In the last 24 hrs, the best air quality in Plymouth, Indiana was observed at 01:00:00 on 2026-03-15.
The current air quality in Plymouth, Indiana is 31, 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 3.464 μg/m3.
The current PM10 concentration at Plymouth, Indiana is 14.805 μg/m3.
The current carbon monoxide (CO) concentration at Plymouth, Indiana is 0.2 ppm.
The current sulfur dioxide (SO2) concentration at Plymouth, Indiana is 0.603 ppb.
The current ozone (O3) concentration at Plymouth, Indiana is 32.789 ppm.
The current nitrogen dioxide (NO2) concentration at Plymouth, Indiana is 2.3 ppb.
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