Today | Weather | Sunday, August 16, 2026

Weather in Mesa, Arizona

03:07 AM
Now
Cloudy Night
88° F
Feels Like 84°
Precipitation 0 %
Wind 5 mph
Humidity 33 %
Today
Sunny with a Chance of Thunderstorms
Day 108°
Night 82°
Precipitation 55 %
Wind 6 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Mesa Weather Forecast Updated

49 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 16, 2025)
Cloudy Weather

Day

102°

Night

77°

Wind

6 mph

UV Index

100

Precipitation

10 %

Air Quality in Mesa

NOW
29 AQI
Good air quality Dominant pollutant: PM10

Pollutant Concentrations:

PM2.5 5.43 µg/m³
PM10 30.82 µg/m³
O3 0.017 ppm
NO2 0.5 ppb
SO2 0 ppb
CO 0.08 ppm
NH3 0.46 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)
PM2.55.43 µg/m³
PM1030.82 µg/m³
O332.42 µg/m³
NO20.9 µg/m³
SO20.03 µg/m³
CO90.89 µg/m³
NH30.46 µg/m³
NO0 µg/m³