Today | Weather | Monday, September 15, 2025

Weather in Mesa, Arizona

05:04 PM

Now

102° F

Feels Like 100°

Precipitation 0 %

Wind 7 mph

UV Index (0 - 11+) 11

Humidity 15 %

Today

Day 102°

Night 77°

Precipitation 0 %

Wind 8

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

Last updated on September 15, 2025 3:13 PM

Weather Forecast History

Last Year's Weather on This Day (September 15, 2024)

Day

100°

Night

77°

Wind

7 mph

UV Index

Precipitation

Air quality in Mesa

NOW

81 AQI

Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 10.50 µg/m³

PM10 38.06 µg/m³

O₃ 67.11 ppb

NO₂ 1.35 ppb

SO₂ 0.58 ppb

CO 121.21 ppb

PM_2.5 – 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