Stay updated with real-time air quality in Johnson City, Tennessee 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
Johnson City, Tennessee
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.90 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.91 μg/m³
0
55
155
255
425
605+
43.18 ppb
0
55
71
86
201
201+
3.24 ppb
0
36
76
186
605
1005+
2.73 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Johnson City, Tennessee
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AQI 41
Good
4.72μg/m³
PM2.5
18.00μg/m³
PM10
44.12ppb
O3
5.28ppb
SO2
3.14ppb
NO2
0.11ppm
CO
AQI 35
Good
2.52μg/m³
PM2.5
12.91μg/m³
PM10
38.36ppb
O3
5.44ppb
SO2
3.15ppb
NO2
0.10ppm
CO
AQI 36
Good
4.33μg/m³
PM2.5
12.43μg/m³
PM10
38.90ppb
O3
5.19ppb
SO2
3.15ppb
NO2
0.14ppm
CO
AQI 35
Good
3.84μg/m³
PM2.5
12.46μg/m³
PM10
38.23ppb
O3
5.16ppb
SO2
3.15ppb
NO2
0.10ppm
CO
AQI 39
Good
5.79μg/m³
PM2.5
19.55μg/m³
PM10
41.87ppb
O3
5.19ppb
SO2
3.07ppb
NO2
0.21ppm
CO
AQI 39
Good
3.62μg/m³
PM2.5
19.33μg/m³
PM10
42.00ppb
O3
4.52ppb
SO2
3.12ppb
NO2
0.14ppm
CO
Air quality measurements for Tennessee, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Johnson City, Tennessee is updated on an hourly basis.
The worst air quality in Johnson City, Tennessee was recorded at 08:00:00 on 2026-03-09.
The best air quality in Johnson City, Tennessee was recorded at 06:00:00 on 2026-03-09.
The real-time air quality index in Johnson City, Tennessee is 40, currently categorized as Good.
The most common pollutant in Johnson City, Tennessee is O3.
If the air quality in Johnson City, Tennessee is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Johnson City, Tennessee at present are 2.896 μg/m3.
The current PM10 levels in Johnson City, Tennessee are 14.915 μg/m3.
The current carbon monoxide (CO) level in Johnson City, Tennessee is 0.115 ppm.
The current sulfur dioxide (SO2) levels in Johnson City, Tennessee are 3.236 ppb.
The current ozone (O3) levels at Johnson City, Tennessee is 43.18 ppm.
The current nitrogen dioxide (NO2) levels at Johnson City, Tennessee is 2.73 ppb.
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