Hourly Weather | Today Wednesday, June 17, 2026
San Antonio, Texas
5 AM
Cloudy Weather
75°
Feels Like 81°
0
Humidity: 91%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Weather
73°
Feels Like 79°
0
Humidity: 95%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
75°
Feels Like 81°
0
Humidity: 91%
UV Index: 0
Wind: 6 mph
8 AM
Cloudy Weather
75°
Feels Like 82°
7
Humidity: 88%
UV Index: 1
Wind: 6 mph
9 AM
Cloudy Weather
79°
Feels Like 84°
7
Humidity: 83%
UV Index: 1
Wind: 6 mph
10 AM
Cloudy Weather
81°
Feels Like 88°
7
Humidity: 78%
UV Index: 2
Wind: 6 mph
11 AM
Cloudy Weather
82°
Feels Like 95°
7
Humidity: 71%
UV Index: 4
Wind: 6 mph
12 PM
Cloudy Weather
86°
Feels Like 97°
7
Humidity: 64%
UV Index: 3
Wind: 7 mph
1 PM
Cloudy Weather
90°
Feels Like 102°
7
Humidity: 59%
UV Index: 7
Wind: 7 mph
2 PM
Cloudy Weather
91°
Feels Like 106°
7
Humidity: 55%
UV Index: 9
Wind: 7 mph
3 PM
Cloudy Weather
93°
Feels Like 106°
7
Humidity: 51%
UV Index: 6
Wind: 7 mph
4 PM
Cloudy Weather
93°
Feels Like 102°
7
Humidity: 49%
UV Index: 4
Wind: 7 mph
5 PM
Cloudy Weather
97°
Feels Like 102°
7
Humidity: 46%
UV Index: 3
Wind: 8 mph
6 PM
Cloudy Weather
95°
Feels Like 100°
7
Humidity: 48%
UV Index: 2
Wind: 8 mph
7 PM
Cloudy Weather
93°
Feels Like 99°
5
Humidity: 50%
UV Index: 1
Wind: 9 mph
8 PM
Sunny Weather
91°
Feels Like 97°
0
Humidity: 54%
UV Index: 0
Wind: 9 mph
9 PM
Night
90°
Feels Like 95°
0
Humidity: 60%
UV Index: 0
Wind: 8 mph
10 PM
Night
88°
Feels Like 93°
0
Humidity: 66%
UV Index: 0
Wind: 8 mph
11 PM
Night
84°
Feels Like 90°
0
Humidity: 72%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 AM
8 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 1.88 µg/m³
  • PM10: 2.47 µg/m³
  • O3: 0.007 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 AM
8 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 1.96 µg/m³
  • PM10: 2.6 µg/m³
  • O3: 0.006 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 AM
9 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 2.06 µg/m³
  • PM10: 2.79 µg/m³
  • O3: 0.006 ppm
  • NO2: 1.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 AM
9 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 2.19 µg/m³
  • PM10: 3.1 µg/m³
  • O3: 0.006 ppm
  • NO2: 1.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 AM
10 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 2.34 µg/m³
  • PM10: 3.39 µg/m³
  • O3: 0.007 ppm
  • NO2: 1.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
11 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 2.59 µg/m³
  • PM10: 3.78 µg/m³
  • O3: 0.009 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
15 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.62 µg/m³
  • PM10: 3.64 µg/m³
  • O3: 0.017 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.62 µg/m³
  • PM10: 3.55 µg/m³
  • O3: 0.020 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.8 µg/m³
  • PM10: 3.74 µg/m³
  • O3: 0.022 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.95 µg/m³
  • PM10: 3.87 µg/m³
  • O3: 0.024 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.09 µg/m³
  • PM10: 4.03 µg/m³
  • O3: 0.026 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.21 µg/m³
  • PM10: 4.18 µg/m³
  • O3: 0.026 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.29 µg/m³
  • PM10: 4.3 µg/m³
  • O3: 0.027 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.32 µg/m³
  • PM10: 4.39 µg/m³
  • O3: 0.027 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.26 µg/m³
  • PM10: 4.39 µg/m³
  • O3: 0.026 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
23 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.14 µg/m³
  • PM10: 4.31 µg/m³
  • O3: 0.025 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.01 µg/m³
  • PM10: 4.21 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.96 µg/m³
  • PM10: 4.26 µg/m³
  • O3: 0.021 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
19 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.13 µg/m³
  • PM10: 4.58 µg/m³
  • O3: 0.021 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.