Air Quality in San Antonio, United States

Windy
37.0°C · 35.3% humidity
37.0°
Feels 37.0°
68
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
49 9am
49
49
68 12pm
63
59
56 3pm
54
53
52 6pm
51
50
50 9pm
50
49
49 12am
49
49
49 3am
49
49
49 6am
49
49
Station readings
58
66
74
CAMS model adj -5
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
AD 728×90

Air Quality Index Trend

47h · 1 stn

San Antonio's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in San Antonio is 1.4× the WHO 24-hour guideline of 15 µg/m³.

35.3%
Humidity
40.6 km/h
Wind S
1005.7 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
68
20.35 µg/m³
PM10
38
41.2 µg/m³
050100150200300500

What is the weather forecast for San Antonio?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.520.35 µg/m³ ×1.4 WHO
Moderate
PM1041.2 µg/m³
Good
UV INDEX24.9
Extreme
AD 300×250
Station readings (4 stations within 25 km)
20.35
Median
20.08
Average
19.04
Low
22.0
High
PM2.5 µg/m³ · Model: 13.5 · Bias: -6.8

What is the 7-day forecast for San Antonio?

07-21
37.0° 25.2°
0.06 mm
07-22
30.9° 24.3°
13.56 mm
07-23
37.2° 20.9°
0.62 mm
07-24
36.3° 24.3°
0.25 mm
07-25
37.3° 24.3°
07-26
36.8° 23.7°
07-27
37.7° 26.1°
Both models agree Avg diff: 2.5°C

Where are air quality stations near San Antonio?

107
CPS Pecan Valley, San Antonio, Texas
6.3 km PM2.5: 37.9 µg/m³
43
CPS Pecan Valley, San Antonio, Texas
6.3 km PM2.5: 10.3 µg/m³
72
San Antonio Interstate 35
15.3 km PM2.5: 22.0 µg/m³
18
San Antonio Northwest, San Antonio, Texas
15.9 km PM2.5: 4.3 µg/m³
74
united-states-of-america-hollywood-park-pinetree-lane
15.9 km PM2.5: 22.8 µg/m³ PM10: 24.9 µg/m³
65
Heritage Middle School, San Antonio, Texas
17.5 km PM2.5: 18.8 µg/m³
23
Heritage Middle School, San Antonio, Texas
17.5 km PM2.5: 5.5 µg/m³
68
San Antonio Red Hill Lane
23.7 km PM2.5: 20.0 µg/m³
38
Calaveras Lake, San Antonio, Texas
24.2 km PM2.5: 9.1 µg/m³
68
San Antonio Bulverde Parkway
24.6 km PM2.5: 20.3 µg/m³ PM10: 60.0 µg/m³

What cities are near San Antonio?

70 Converse 68 Live Oak 69 Universal City 69 Schertz 69 Cibolo 54 New Braunfels 54 Seguin 44 Canyon Lake 59 San Marcos 54 Kyle
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:15 UTC.