Today | Weather | Monday, July 20, 2026

Weather in Tucson, Arizona

05:42 AM
Now
Cloudy Weather
79° F
Feels Like 79°
Precipitation 49 %
Wind 5 mph
UV Index (0 - 11+) 1
Humidity 52 %
Today
Sunny with a Chance of Thunderstorms
Day 97°
Night 73°
Precipitation 55 %
Wind 6 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

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.

Tucson Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 20, 2025)
Stormy Weather

Day

93°

Night

73°

Wind

7 mph

Precipitation

40 %

Air Quality in Tucson

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

Pollutant Concentrations:

PM2.5 3.64 µg/m³
PM10 16.06 µg/m³
O3 0.015 ppm
NO2 0.5 ppb
SO2 0 ppb
CO 0.08 ppm
NH3 1.96 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)
PM2.53.64 µg/m³
PM1016.06 µg/m³
O329.88 µg/m³
NO20.89 µg/m³
SO20.05 µg/m³
CO87.16 µg/m³
NH31.96 µg/m³
NO0 µg/m³