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Today | Weather | Saturday, August 29, 2026
Active Weather Warnings

Weather in Tucson, Arizona

11:21 AM
Now
Cloudy Weather
100° F
Feels Like 108°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 9
Humidity 23 %
Today
Sunny with a Chance of Thunderstorms
Day 104°
Night 81°
Precipitation 55 %
Wind 7 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.

Tucson Weather Forecast Updated

20 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 29, 2025)
Cloudy Night

Day

97°

Night

73°

Wind

6 mph

Precipitation

2 %

Air Quality in Tucson

NOW
31 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.4 µg/m³
PM10 22.56 µg/m³
O3 0.033 ppm
NO2 0.2 ppb
SO2 0 ppb
CO 0.07 ppm
NH3 1.28 µg/m³
NO 0.1 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)
PM2.5 – 5.4 µg/m³
PM10 – 22.56 µg/m³
O3 – 65.76 µg/m³
NO2 – 0.47 µg/m³
SO2 – 0.12 µg/m³
CO – 84.85 µg/m³
NH3 – 1.28 µg/m³
NO – 0.1 µg/m³
View Hourly Air Quality Forecast

Weather Alerts and Warnings for Tucson

Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued August 29 at 9:39AM MST until August 29 at 8:00PM MST by NWS Tucson AZ
Aug 29, 10:39 AM → Aug 29, 9:00 PM
WHAT: Scattered strong thunderstorms later this afternoon will
produce wind gusts to 45 to 55 mph resulting in areas of blowing
dust which will reduce visibilities to between one-quarter mile and
one mile at times. Initial development of the blowing dust will be
near Tucson then move to the west and northwest. Dangerously hot
conditions with high temperatures ranging between 104 to 110
degrees and low temperatures 79 to 85 degrees. Major to Extreme
HeatRisk today.

WHERE: South Central Pinal County, Tohono O'odham Nation, Tucson
Metro Area, and Western Pima County.

WHEN: For the Extreme Heat Warning, until 8 PM MST this evening.
For the Blowing Dust Advisory, from 4 PM this afternoon to 8 PM MST
this evening.

IMPACTS: Hazardous driving conditions due to reduced visibility.
Heat related illnesses increase significantly during extreme heat
events.
+ Read More
Persons with respiratory problems should make preparations to stay indoors until the storm passes. Be ready for a sudden drop in visibility to near zero. If you encounter blowing dust or blowing sand on the roadway or see it approaching, pull off the road as far as possible and put your vehicle in park. Turn the lights all the way off and keep foot off the brake pedal. Remember, 'Pull Aside, Stay Alive'. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible and drink plenty of water.
Updated: Aug 29, 12:00 PM Source: NWS Alert
Severe Future Possible

Flood Watch

Flood Watch issued August 29 at 5:26AM MST until August 31 at 5:00AM MST by NWS Tucson AZ
Aug 29, 12:00 PM → Aug 31, 6:00 AM
WHAT: Flash flooding caused by excessive rainfall continues to be
possible.

WHERE: Tucson Metro Area, Southeast Pinal County, Tohono O'odham
Nation, Upper San Pedro River Valley Upper Santa Cruz River
Valley/Altar Valley, Baboquivari Mountains, Catalina and Rincon
Mountains, Dragoon and Mule and Huachuca and Santa Rita Mountains.

WHEN: From 11 AM MST this morning through late Sunday night.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Low-water crossings may be flooded. Flooding may occur in poor
drainage and urban areas.

ADDITIONAL DETAILS:
- An increase in moisture will bring scattered thunderstorms
Saturday and Sunday. Rainfall rates in excess of 1 inch per hour
are expected with the stronger storms with isolated areas having
the potential of 1-3 inches. Additional rainfall from the
previous day and overnight activity will result in faster
responses in normally dry washes, creeks and roadway dips.

- Http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Updated: Aug 29, 12:00 PM Source: NWS Alert
Moderate Expected Likely

Blowing Dust Advisory

Blowing Dust Advisory issued August 29 at 9:39AM MST until August 29 at 8:00PM MST by NWS Tucson AZ
Aug 29, 5:00 PM → Aug 29, 9:00 PM
WHAT: Scattered strong thunderstorms later this afternoon will
produce wind gusts to 45 to 55 mph resulting in areas of blowing
dust which will reduce visibilities to between one-quarter mile and
one mile at times. Initial development of the blowing dust will be
near Tucson then move to the west and northwest. Dangerously hot
conditions with high temperatures ranging between 104 to 110
degrees and low temperatures 79 to 85 degrees. Major to Extreme
HeatRisk today.

WHERE: South Central Pinal County, Tohono O'odham Nation, Tucson
Metro Area, and Western Pima County.

WHEN: For the Extreme Heat Warning, until 8 PM MST this evening.
For the Blowing Dust Advisory, from 4 PM this afternoon to 8 PM MST
this evening.

IMPACTS: Hazardous driving conditions due to reduced visibility.
Heat related illnesses increase significantly during extreme heat
events.
+ Read More
Persons with respiratory problems should make preparations to stay indoors until the storm passes. Be ready for a sudden drop in visibility to near zero. If you encounter blowing dust or blowing sand on the roadway or see it approaching, pull off the road as far as possible and put your vehicle in park. Turn the lights all the way off and keep foot off the brake pedal. Remember, 'Pull Aside, Stay Alive'. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible and drink plenty of water.
Updated: Aug 29, 12:00 PM Source: NWS Alert

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