Stay updated with real-time air quality in San Juan City, Texas 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)
58
Moderate
San Juan City, Texas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
13.45 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
49.70 μg/m³
0
55
155
255
425
605+
19.02 ppb
0
55
71
86
201
201+
0.97 ppb
0
36
76
186
605
1005+
3.19 ppb
0
54
101
361
1250
2050+
0.37 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
San Juan City, Texas
San Juan City, Texas
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AQI 58
Moderate
13.45μg/m³
PM2.5
49.70μg/m³
PM10
19.02ppb
O3
0.97ppb
SO2
3.19ppb
NO2
0.37ppm
CO
AQI 60
Moderate
13.83μg/m³
PM2.5
41.96μg/m³
PM10
18.68ppb
O3
0.97ppb
SO2
3.19ppb
NO2
0.37ppm
CO
AQI 58
Moderate
13.35μg/m³
PM2.5
50.06μg/m³
PM10
19.07ppb
O3
0.97ppb
SO2
3.19ppb
NO2
0.37ppm
CO
AQI 60
Moderate
14.19μg/m³
PM2.5
34.84μg/m³
PM10
18.36ppb
O3
0.97ppb
SO2
3.19ppb
NO2
0.37ppm
CO
AQI 56
Moderate
12.47μg/m³
PM2.5
48.86μg/m³
PM10
19.66ppb
O3
0.97ppb
SO2
3.19ppb
NO2
0.37ppm
CO
AQI 58
Moderate
13.21μg/m³
PM2.5
58.53μg/m³
PM10
19.32ppb
O3
0.97ppb
SO2
3.19ppb
NO2
0.37ppm
CO
Air quality data and pollutant measurements for Texas, 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 San Juan City, Texas is updated every hour.
The worst air quality in San Juan City, Texas in the last 24 hours was observed at 03:00:00 on 2026-04-24.
In the last 24 hrs, the best air quality in San Juan City, Texas was observed at 12:00:00 on 2026-04-23.
The current air quality in San Juan City, Texas is 58, categorized as Moderate based on real-time data.
The most common pollutant in San Juan City, Texas is PM2.5.
If the air quality in San Juan City, Texas is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at San Juan City, Texas is 13.451 μg/m3.
The current PM10 concentration at San Juan City, Texas is 49.701 μg/m3.
The current carbon monoxide (CO) concentration at San Juan City, Texas is 0.369 ppm.
The current sulfur dioxide (SO2) concentration at San Juan City, Texas is 0.969 ppb.
The current ozone (O3) concentration at San Juan City, Texas is 19.019 ppm.
The current nitrogen dioxide (NO2) concentration at San Juan City, Texas is 3.189 ppb.
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