Hourly Weather | Today Thursday, March 26, 2026
San Antonio, Texas
9 AM
Cloudy Weather
70°
Feels Like 66°
0
Humidity: 80%
UV Index: 1
Wind: 10 mph
10 AM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 76%
UV Index: 2
Wind: 12 mph
11 AM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 65%
UV Index: 5
Wind: 12 mph
12 PM
Cloudy Weather
79°
Feels Like 81°
0
Humidity: 54%
UV Index: 7
Wind: 13 mph
1 PM
Sunny Weather
82°
Feels Like 84°
0
Humidity: 46%
UV Index: 8
Wind: 14 mph
2 PM
Sunny Weather
84°
Feels Like 88°
0
Humidity: 39%
UV Index: 7
Wind: 14 mph
3 PM
Sunny Weather
88°
Feels Like 90°
0
Humidity: 34%
UV Index: 5
Wind: 15 mph
4 PM
Sunny Weather
90°
Feels Like 90°
0
Humidity: 31%
UV Index: 4
Wind: 15 mph
5 PM
Sunny Weather
91°
Feels Like 90°
0
Humidity: 28%
UV Index: 2
Wind: 15 mph
6 PM
Sunny Weather
90°
Feels Like 88°
0
Humidity: 29%
UV Index: 1
Wind: 15 mph
7 PM
Sunny Weather
88°
Feels Like 84°
0
Humidity: 31%
UV Index: 0
Wind: 15 mph
8 PM
Night
84°
Feels Like 81°
0
Humidity: 38%
UV Index: 0
Wind: 15 mph
9 PM
Night
81°
Feels Like 75°
0
Humidity: 47%
UV Index: 0
Wind: 15 mph
10 PM
Night
75°
Feels Like 73°
0
Humidity: 56%
UV Index: 0
Wind: 14 mph
11 PM
Night
73°
Feels Like 70°
0
Humidity: 64%
UV Index: 0
Wind: 13 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 AM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.63 µg/m³
  • PM10: 9.59 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

10 AM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.44 µg/m³
  • PM10: 9.17 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.23 µg/m³
  • PM10: 8.5 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.16 µg/m³
  • PM10: 8.23 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.26 µg/m³
  • PM10: 8.27 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.1 µg/m³
  • PM10: 7.37 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.81 µg/m³
  • PM10: 6.26 µg/m³
  • O3: 0.040 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
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.78 µg/m³
  • PM10: 5.99 µg/m³
  • O3: 0.041 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.

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

Pollutant Concentrations:

  • PM2.5: 2.97 µg/m³
  • PM10: 6.23 µg/m³
  • O3: 0.042 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.

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

Pollutant Concentrations:

  • PM2.5: 3.24 µg/m³
  • PM10: 6.66 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.56 µg/m³
  • PM10: 7.18 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.89 µg/m³
  • PM10: 7.8 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.16 µg/m³
  • PM10: 8.46 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.2 µg/m³
  • PM10: 8.9 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.97 µg/m³
  • PM10: 8.92 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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