Air Quality in San Antonio, United States
Windy
21.2°C · 66.0% humidity
21.2°
Feels 21.2°
41
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations
Nearby Monitoring Stations
AQI Forecast
Calibrated
43
2pm
44
10
26
5pm
34
34
34
8pm
34
34
22
11pm
22
22
34
2am
34
34
34
5am
34
34
34
8am
34
34
34
11am
34
22
Station readings
43
44
10
26
CAMS model
adj -3
37
37
37
37
37
37
37
37
37
25
25
25
37
37
37
37
37
37
37
37
37
37
37
25
PM2.5 Trend (24h)
28h · 5 stations66.0%
Humidity
85.8 km/h
Wind SSE
1018.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
What is the weather forecast for San Antonio?
Temperature & Precipitation
PM2.59.83 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (4 stations within 25 km)
9.83
Median
8.82
Average
4.93
Low
10.7
High
PM2.5 µg/m³ · Model: 7.4 · Bias: -2.4
What is the 7-day forecast for San Antonio?
04-09
21.2° 14.1°
0.31 mm
04-10
24.0° 17.0°
1.25 mm
04-11
26.0° 16.9°
0.62 mm
04-12
27.2° 17.6°
0.56 mm
04-13
28.8° 20.7°
04-14
28.6° 19.5°
0.06 mm
04-15
30.6° 20.3°
0.06 mm
Both models agree
Avg diff: 2.5°C
Where are air quality stations near San Antonio?
26
CPS Pecan Valley, San Antonio, Texas
27
Old Hwy 90, San Antonio, Texas
42
Old Hwy 90, San Antonio, Texas
31
Old Hwy 90, San Antonio, Texas
38
San Antonio Interstate 35
34
San Antonio Northwest, San Antonio, Texas
8
united-states-of-america-hollywood-park-pinetree-lane
39
Heritage Middle School, San Antonio, Texas
18
Heritage Middle School, San Antonio, Texas
36
San Antonio Red Hill Lane
What cities are near San Antonio?
Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T17:36 UTC.