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)
56
Moderate
San Juan City, Texas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.99 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
47.22 μg/m³
0
55
155
255
425
605+
16.94 ppb
0
55
71
86
201
201+
0.56 ppb
0
36
76
186
605
1005+
2.67 ppb
0
54
101
361
1250
2050+
0.36 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 56
Moderate
12.41μg/m³
PM2.5
48.81μg/m³
PM10
18.04ppb
O3
0.55ppb
SO2
4.98ppb
NO2
0.35ppm
CO
AQI 56
Moderate
12.03μg/m³
PM2.5
41.07μg/m³
PM10
18.36ppb
O3
0.55ppb
SO2
4.97ppb
NO2
0.35ppm
CO
AQI 56
Moderate
12.45μg/m³
PM2.5
49.64μg/m³
PM10
17.98ppb
O3
0.55ppb
SO2
5.01ppb
NO2
0.34ppm
CO
AQI 56
Moderate
11.69μg/m³
PM2.5
33.95μg/m³
PM10
18.66ppb
O3
0.55ppb
SO2
4.96ppb
NO2
0.35ppm
CO
AQI 58
Moderate
12.88μg/m³
PM2.5
55.73μg/m³
PM10
17.53ppb
O3
0.55ppb
SO2
4.94ppb
NO2
0.35ppm
CO
AQI 58
Moderate
12.78μg/m³
PM2.5
56.59μg/m³
PM10
17.76ppb
O3
0.55ppb
SO2
4.94ppb
NO2
0.35ppm
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 07:00:00 on 2026-06-07.
In the last 24 hrs, the best air quality in San Juan City, Texas was observed at 09:00:00 on 2026-06-08.
The current air quality in San Juan City, Texas is 56, 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 12.41 μg/m3.
The current PM10 concentration at San Juan City, Texas is 48.811 μg/m3.
The current carbon monoxide (CO) concentration at San Juan City, Texas is 0.346 ppm.
The current sulfur dioxide (SO2) concentration at San Juan City, Texas is 0.553 ppb.
The current ozone (O3) concentration at San Juan City, Texas is 18.039 ppm.
The current nitrogen dioxide (NO2) concentration at San Juan City, Texas is 4.983 ppb.
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