Today | Weather | Saturday, January 17, 2026

Weather in Mesa, Arizona

02:10 PM
Now
Sunny Weather
73° F
Feels Like 75°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 2
Humidity 14 %
Today
Sunny Weather
Day 77°
Night 46°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 3

Mesa Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 17, 2025)
Cloudy Weather

Day

64°

Night

39°

Wind

4 mph

UV Index

3

Precipitation

1 %

Air Quality in Mesa

NOW
55 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 14.53 µg/m³
PM10 39.25 µg/m³
O3 0.054 ppm
NO2 0.9 ppb
SO2 0.9 ppb
CO 0.14 ppm
NH3 0.45 µg/m³
NO 0.3 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.514.53 µg/m³
PM1039.25 µg/m³
O3106.72 µg/m³
NO21.65 µg/m³
SO22.31 µg/m³
CO156.54 µg/m³
NH30.45 µg/m³
NO0.3 µg/m³