Hourly Weather | Today Thursday, September 18, 2025
Tempe, Arizona
3 PM
Cloudy Weather
97°
Feels Like 97°
24
Humidity: 31%
Wind: 6 mph
UV Index: 25
4 PM
Cloudy Weather
97°
Feels Like 97°
47
Humidity: 30%
Wind: 7 mph
UV Index: 14
5 PM
Stormy Weather
97°
Feels Like 93°
51
Humidity: 38%
Wind: 7 mph
UV Index: 3
6 PM
Cloudy Weather
93°
Feels Like 93°
43
Humidity: 38%
Wind: 7 mph
UV Index: 0
7 PM
Stormy Weather
91°
Feels Like 88°
51
Humidity: 41%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
91°
Feels Like 91°
47
Humidity: 41%
Wind: 5 mph
UV Index: 0
9 PM
Cloudy Night
91°
Feels Like 90°
40
Humidity: 41%
Wind: 5 mph
UV Index: 0
10 PM
Cloudy Night
90°
Feels Like 88°
33
Humidity: 44%
Wind: 6 mph
UV Index: 0
11 PM
Night
86°
Feels Like 86°
33
Humidity: 49%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

3 PM
48 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.72 µg/m³
  • PM10: 30.03 µg/m³
  • O₃: 46.08 ppb
  • NO₂: 11.48 ppb
  • SO₂: 0.46 ppb
  • CO: 240.67 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

4 PM
49 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.16 µg/m³
  • PM10: 35.88 µg/m³
  • O₃: 49.94 ppb
  • NO₂: 9.08 ppb
  • SO₂: 0.50 ppb
  • CO: 211.16 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

5 PM
50 AQI
Good air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.46 µg/m³
  • PM10: 37.87 µg/m³
  • O₃: 52.40 ppb
  • NO₂: 7.73 ppb
  • SO₂: 0.51 ppb
  • CO: 193.49 ppb

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

6 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.03 µg/m³
  • PM10: 38.00 µg/m³
  • O₃: 54.17 ppb
  • NO₂: 6.90 ppb
  • SO₂: 0.52 ppb
  • CO: 181.73 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

7 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.64 µg/m³
  • PM10: 38.98 µg/m³
  • O₃: 57.51 ppb
  • NO₂: 2.90 ppb
  • SO₂: 0.66 ppb
  • CO: 126.66 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

8 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.42 µg/m³
  • PM10: 39.44 µg/m³
  • O₃: 53.53 ppb
  • NO₂: 3.91 ppb
  • SO₂: 0.70 ppb
  • CO: 130.69 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.95 µg/m³
  • PM10: 24.65 µg/m³
  • O₃: 49.54 ppb
  • NO₂: 4.92 ppb
  • SO₂: 0.74 ppb
  • CO: 134.72 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.57 µg/m³
  • PM10: 22.23 µg/m³
  • O₃: 47.26 ppb
  • NO₂: 5.29 ppb
  • SO₂: 0.84 ppb
  • CO: 134.78 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 PM
51 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.02 µg/m³
  • PM10: 19.71 µg/m³
  • O₃: 44.99 ppb
  • NO₂: 5.66 ppb
  • SO₂: 0.94 ppb
  • CO: 134.85 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.