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)
38
Good
San Juan City, Texas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.18 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.83 μg/m³
0
55
155
255
425
605+
22.16 ppb
0
55
71
86
201
201+
3.82 ppb
0
36
76
186
605
1005+
1.94 ppb
0
54
101
361
1250
2050+
0.78 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 33
Good
6.42μg/m³
PM2.5
26.19μg/m³
PM10
17.60ppb
O3
3.74ppb
SO2
1.35ppb
NO2
0.82ppm
CO
AQI 33
Good
6.42μg/m³
PM2.5
23.45μg/m³
PM10
17.39ppb
O3
3.74ppb
SO2
1.35ppb
NO2
0.82ppm
CO
AQI 38
Good
6.51μg/m³
PM2.5
26.94μg/m³
PM10
17.57ppb
O3
3.74ppb
SO2
1.36ppb
NO2
0.82ppm
CO
AQI 33
Good
6.42μg/m³
PM2.5
20.93μg/m³
PM10
17.20ppb
O3
3.74ppb
SO2
1.35ppb
NO2
0.82ppm
CO
AQI 38
Good
7.24μg/m³
PM2.5
31.94μg/m³
PM10
17.64ppb
O3
3.74ppb
SO2
1.53ppb
NO2
0.76ppm
CO
AQI 33
Good
6.21μg/m³
PM2.5
27.91μg/m³
PM10
17.91ppb
O3
3.74ppb
SO2
1.34ppb
NO2
0.82ppm
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 12:00:00 on 2026-08-08.
In the last 24 hrs, the best air quality in San Juan City, Texas was observed at 05:00:00 on 2026-08-08.
The current air quality in San Juan City, Texas is 33, categorized as Good 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 6.418 μg/m3.
The current PM10 concentration at San Juan City, Texas is 26.187 μg/m3.
The current carbon monoxide (CO) concentration at San Juan City, Texas is 0.819 ppm.
The current sulfur dioxide (SO2) concentration at San Juan City, Texas is 3.739 ppb.
The current ozone (O3) concentration at San Juan City, Texas is 17.6 ppm.
The current nitrogen dioxide (NO2) concentration at San Juan City, Texas is 1.352 ppb.
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