Today | Weather | Monday, September 1, 2025
Air Quality Alert (Issued when air pollution levels are unhealthy, especially for sensitive groups.)

Weather in Tempe, Arizona

08:06 AM
Now
Sunny WeatherSunny weather, clear skies and sunny weather.
88° F
Feels Like 90°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 11
Humidity 43 %
Today
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 106°
Night 84°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Tempe Weather Forecast Updated

Last updated on

Weather Forecast History

Last Year's Weather on This Day (September 1, 2024)

Partly Sunny with ShowersPartly sunny weather with scattered clouds and occasional rain showers.

Day

104°

Night

82°

Wind

11 mph

UV Index

9

Precipitation

49

Air quality in Tempe

NOW
46 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 11.50 µg/m³
PM10 73.96 µg/m³
O₃ 35.35 ppb
NO₂ 3.77 ppb
SO₂ 0.53 ppb
CO 129.53 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

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