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)
66
Moderate
San Juan City, Texas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
16.94 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
67.06 μg/m³
0
55
155
255
425
605+
8.38 ppb
0
55
71
86
201
201+
0.76 ppb
0
36
76
186
605
1005+
4.51 ppb
0
54
101
361
1250
2050+
0.26 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 66
Moderate
16.94μg/m³
PM2.5
67.06μg/m³
PM10
8.38ppb
O3
0.76ppb
SO2
4.51ppb
NO2
0.26ppm
CO
AQI 62
Moderate
15.05μg/m³
PM2.5
50.73μg/m³
PM10
8.93ppb
O3
0.76ppb
SO2
4.50ppb
NO2
0.26ppm
CO
AQI 66
Moderate
17.11μg/m³
PM2.5
68.53μg/m³
PM10
8.26ppb
O3
0.76ppb
SO2
4.51ppb
NO2
0.26ppm
CO
AQI 58
Moderate
13.32μg/m³
PM2.5
35.71μg/m³
PM10
9.43ppb
O3
0.76ppb
SO2
4.50ppb
NO2
0.26ppm
CO
AQI 67
Moderate
18.02μg/m³
PM2.5
79.31μg/m³
PM10
5.68ppb
O3
0.76ppb
SO2
4.03ppb
NO2
0.26ppm
CO
AQI 69
Moderate
18.90μg/m³
PM2.5
84.10μg/m³
PM10
7.98ppb
O3
0.76ppb
SO2
4.51ppb
NO2
0.26ppm
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 09:00:00 on 2025-12-07.
In the last 24 hrs, the best air quality in San Juan City, Texas was observed at 03:00:00 on 2025-12-06.
The current air quality in San Juan City, Texas is 66, 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 16.938 μg/m3.
The current PM10 concentration at San Juan City, Texas is 67.064 μg/m3.
The current carbon monoxide (CO) concentration at San Juan City, Texas is 0.261 ppm.
The current sulfur dioxide (SO2) concentration at San Juan City, Texas is 0.758 ppb.
The current ozone (O3) concentration at San Juan City, Texas is 8.385 ppm.
The current nitrogen dioxide (NO2) concentration at San Juan City, Texas is 4.508 ppb.
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