Hourly Weather | Today Wednesday, March 18, 2026
Tempe, Arizona
6 PM
Sunny Weather
99°
Feels Like 95°
5
Humidity: 7%
UV Index: 0
Wind: 7 mph
7 PM
Night
93°
Feels Like 91°
0
Humidity: 8%
UV Index: 0
Wind: 5 mph
8 PM
Cloudy Night
91°
Feels Like 88°
0
Humidity: 10%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
88°
Feels Like 84°
0
Humidity: 11%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
82°
Feels Like 81°
0
Humidity: 13%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
81°
Feels Like 79°
0
Humidity: 15%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.58 µg/m³
  • PM10: 23.98 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.09 µg/m³
  • PM10: 26.38 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.08 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: 5.82 µg/m³
  • PM10: 29.6 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.48 µg/m³
  • PM10: 32.47 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.86 µg/m³
  • PM10: 33.89 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.09 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: 7.26 µg/m³
  • PM10: 35.47 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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