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Today | Weather | Thursday, September 4, 2025
Flood Watch (Flooding is possible in the near future; stay informed and prepared for potential evacuation or disruptions) Air Quality Alert (Issued when air pollution levels are unhealthy, especially for sensitive groups.)

Weather in Mesa, Arizona

04:41 AM
Now
Cloudy WeatherCloudy weather, overcast skies with no rain.
75° F
Feels Like 75°
Precipitation 49 %
Wind 6 mph
Humidity 68 %
Today
Sunny with a Chance of ThunderstormsSunny weather with a possibility of isolated thunderstorms developing later in the day.
Day 97°
Night 72°
Precipitation 55 %
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.

Mesa Weather Forecast Updated

1 minute ago
Last updated on

Weather Forecast History

Last Year's Weather on This Day (September 4, 2024)

Cloudy NightCloudy night, overcast skies at night with no rain.

Day

108°

Night

82°

Wind

4 mph

Precipitation

1

Air quality in Mesa

NOW
76 AQI
Moderate air quality Dominant pollutant: PM10

Pollutant Concentrations:

PM2.5 27.88 µg/m³
PM10 183.34 µg/m³
O₃ 40.26 ppb
NO₂ 7.41 ppb
SO₂ 0.42 ppb
CO 145.33 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

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

View Hourly Air Quality Forecast