Hourly Weather | Today Tuesday, April 28, 2026
Tucson, Arizona
7 AM
Cloudy Weather
59°
Feels Like 64°
0
Humidity: 34%
UV Index: 2
Wind: 4 mph
8 AM
Cloudy Weather
64°
Feels Like 72°
0
Humidity: 27%
UV Index: 3
Wind: 4 mph
9 AM
Cloudy Weather
68°
Feels Like 75°
0
Humidity: 22%
UV Index: 5
Wind: 4 mph
10 AM
Cloudy Weather
72°
Feels Like 82°
0
Humidity: 17%
UV Index: 7
Wind: 4 mph
11 AM
Cloudy Weather
75°
Feels Like 88°
0
Humidity: 14%
UV Index: 10
Wind: 4 mph
12 PM
Cloudy Weather
79°
Feels Like 90°
0
Humidity: 11%
UV Index: 11
Wind: 5 mph
1 PM
Cloudy Weather
81°
Feels Like 90°
0
Humidity: 9%
UV Index: 10
Wind: 6 mph
2 PM
Cloudy Weather
82°
Feels Like 90°
0
Humidity: 8%
UV Index: 7
Wind: 6 mph
3 PM
Cloudy Weather
84°
Feels Like 90°
0
Humidity: 8%
UV Index: 5
Wind: 6 mph
4 PM
Cloudy Weather
82°
Feels Like 84°
0
Humidity: 8%
UV Index: 3
Wind: 7 mph
5 PM
Cloudy Weather
82°
Feels Like 82°
0
Humidity: 9%
UV Index: 2
Wind: 7 mph
6 PM
Cloudy Weather
81°
Feels Like 79°
0
Humidity: 9%
UV Index: 1
Wind: 7 mph
7 PM
Sunny Weather
79°
Feels Like 75°
0
Humidity: 10%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
75°
Feels Like 73°
0
Humidity: 11%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
73°
Feels Like 72°
0
Humidity: 13%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 14%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 15%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

7 AM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.59 µg/m³
  • PM10: 28.58 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.8 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 AM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.37 µg/m³
  • PM10: 28.14 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.9 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
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.15 µg/m³
  • PM10: 27.83 µg/m³
  • O3: 0.036 ppm
  • NO2: 0.9 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 AM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.62 µg/m³
  • PM10: 20.23 µg/m³
  • O3: 0.052 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.

11 AM
52 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.78 µg/m³
  • PM10: 15.7 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

12 PM
54 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.59 µg/m³
  • PM10: 14.69 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

1 PM
67 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.91 µg/m³
  • PM10: 11.46 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 PM
73 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.51 µg/m³
  • PM10: 9.63 µg/m³
  • O3: 0.061 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
73 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.49 µg/m³
  • PM10: 9.57 µg/m³
  • O3: 0.061 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
77 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.59 µg/m³
  • PM10: 9.88 µg/m³
  • O3: 0.063 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
78 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.74 µg/m³
  • PM10: 10.22 µg/m³
  • O3: 0.063 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
79 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.88 µg/m³
  • PM10: 10.84 µg/m³
  • O3: 0.063 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
78 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.04 µg/m³
  • PM10: 11.79 µg/m³
  • O3: 0.063 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
73 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.65 µg/m³
  • PM10: 15.51 µg/m³
  • O3: 0.061 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM
67 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.25 µg/m³
  • PM10: 24.68 µg/m³
  • O3: 0.060 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM
52 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.89 µg/m³
  • PM10: 32.44 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 8.17 µg/m³
  • PM10: 36.84 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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