Hourly Weather | Today Tuesday, July 21, 2026
Towson, Maryland
5 AM
Cloudy Weather
75°
Feels Like 77°
43
Humidity: 87%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Weather
73°
Feels Like 77°
47
Humidity: 89%
UV Index: 0
Wind: 6 mph
7 AM
Stormy Weather
73°
Feels Like 75°
51
Humidity: 92%
UV Index: 0
Wind: 6 mph
8 AM
Stormy Weather
75°
Feels Like 77°
69
Humidity: 93%
UV Index: 0
Wind: 6 mph
9 AM
Cloudy Weather
75°
Feels Like 82°
49
Humidity: 90%
UV Index: 1
Wind: 7 mph
10 AM
Stormy Weather
77°
Feels Like 81°
69
Humidity: 85%
UV Index: 1
Wind: 7 mph
11 AM
Cloudy Weather
79°
Feels Like 88°
40
Humidity: 80%
UV Index: 3
Wind: 8 mph
12 PM
Cloudy Weather
82°
Feels Like 90°
34
Humidity: 74%
UV Index: 3
Wind: 8 mph
1 PM
Cloudy Weather
86°
Feels Like 93°
40
Humidity: 65%
UV Index: 3
Wind: 9 mph
2 PM
Stormy Weather
84°
Feels Like 88°
66
Humidity: 78%
UV Index: 2
Wind: 9 mph
3 PM
Cloudy Weather
82°
Feels Like 88°
49
Humidity: 73%
UV Index: 2
Wind: 9 mph
4 PM
Cloudy Weather
82°
Feels Like 88°
49
Humidity: 71%
UV Index: 2
Wind: 11 mph
5 PM
Cloudy Weather
82°
Feels Like 86°
49
Humidity: 72%
UV Index: 1
Wind: 11 mph
6 PM
Stormy Weather
79°
Feels Like 79°
66
Humidity: 85%
UV Index: 0
Wind: 11 mph
7 PM
Cloudy Weather
77°
Feels Like 79°
49
Humidity: 84%
UV Index: 0
Wind: 9 mph
8 PM
Cloudy Weather
73°
Feels Like 77°
49
Humidity: 90%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Weather
75°
Feels Like 77°
49
Humidity: 86%
UV Index: 0
Wind: 8 mph
10 PM
Stormy Weather
73°
Feels Like 72°
57
Humidity: 89%
UV Index: 0
Wind: 8 mph
11 PM
Stormy Weather
73°
Feels Like 73°
56
Humidity: 88%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 9.36 µg/m³
  • PM10: 10.17 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.22 µg/m³
  • PM10: 8.87 µg/m³
  • O3: 0.018 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.14 µg/m³
  • PM10: 7.66 µg/m³
  • O3: 0.015 ppm
  • NO2: 2.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.38 µg/m³
  • PM10: 6.79 µg/m³
  • O3: 0.014 ppm
  • NO2: 2.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.93 µg/m³
  • PM10: 6.25 µg/m³
  • O3: 0.016 ppm
  • NO2: 2.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.65 µg/m³
  • PM10: 5.92 µg/m³
  • O3: 0.018 ppm
  • NO2: 2.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.36 µg/m³
  • PM10: 5.62 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.25 µg/m³
  • PM10: 4.45 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.22 µg/m³
  • PM10: 3.38 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.9 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
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.92 µg/m³
  • PM10: 3.08 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.8 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
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.89 µg/m³
  • PM10: 3.03 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.94 µg/m³
  • PM10: 3.03 µg/m³
  • O3: 0.034 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.82 µg/m³
  • PM10: 2.88 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.56 µg/m³
  • PM10: 2.6 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.37 µg/m³
  • PM10: 2.42 µg/m³
  • O3: 0.031 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.33 µg/m³
  • PM10: 2.38 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.36 µg/m³
  • PM10: 2.41 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.8 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
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.29 µg/m³
  • PM10: 2.33 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.22 µg/m³
  • PM10: 2.25 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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