Stay updated with real-time air quality in San Antonio, 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)
49
Good
San Antonio, Texas
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.19 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
39.91 μg/m³
0
55
155
255
425
605+
23.67 ppb
0
55
71
86
201
201+
0.93 ppb
0
36
76
186
605
1005+
3.17 ppb
0
54
101
361
1250
2050+
0.40 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
San Antonio, Texas
San Antonio, Texas
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AQI 49
Good
8.99μg/m³
PM2.5
40.67μg/m³
PM10
25.63ppb
O3
0.93ppb
SO2
3.17ppb
NO2
0.40ppm
CO
AQI 52
Moderate
9.94μg/m³
PM2.5
41.74μg/m³
PM10
24.32ppb
O3
0.93ppb
SO2
3.17ppb
NO2
0.40ppm
CO
AQI 54
Moderate
10.76μg/m³
PM2.5
45.85μg/m³
PM10
24.51ppb
O3
0.93ppb
SO2
3.18ppb
NO2
0.40ppm
CO
AQI 52
Moderate
9.82μg/m³
PM2.5
40.22μg/m³
PM10
24.48ppb
O3
0.93ppb
SO2
3.18ppb
NO2
0.40ppm
CO
AQI 49
Good
9.13μg/m³
PM2.5
35.18μg/m³
PM10
24.87ppb
O3
0.93ppb
SO2
3.18ppb
NO2
0.40ppm
CO
AQI 52
Moderate
9.99μg/m³
PM2.5
28.97μg/m³
PM10
23.53ppb
O3
0.93ppb
SO2
3.18ppb
NO2
0.40ppm
CO
Air quality and pollutant data for Texas, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for San Antonio, Texas is updated every hour for accuracy.
In the past 24 hours, the air quality in San Antonio, Texas was at its worst at 07:00:00 on 2026-09-06.
In the last 24 hours, the best air quality in San Antonio, Texas was observed at 05:00:00 on 2026-09-07.
As of now, the AQI in San Antonio, Texas is 49, indicating Good conditions.
San Antonio, Texas air has the highest levels of PM2.5.
Poor air quality in San Antonio, Texas means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in San Antonio, Texas are currently 9.193 μg/m3.
The PM10 concentration in San Antonio, Texas is 39.912 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in San Antonio, Texas is 0.398 ppm.
Currently, San Antonio, Texas has a sulfur dioxide (SO2) concentration of 0.93 ppb.
The current ozone (O3) level in San Antonio, Texas at the moment is 23.67 ppm.
Nitrogen dioxide (NO2) level in San Antonio, Texas at the moment is 3.167 ppb.
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