United States, North America
Oro Valley is located in the United States with varying weather patterns throughout the year. Plan your visit to Oro Valleywith our accurate weather forecasts, including hourly updates, 7-day predictions, and real-time conditions. Whether you're a local or visitor, stay prepared for whatever weather the United States brings.
United States, United States of America
Friday, 28 August 2026 at 21:22
Overcast
Feels like 32°C
Humidity
25%
Wind
18.4 km/h N
Visibility
10 km
Pressure
1011 mb
* WHAT...Dangerously hot conditions with high temperatures ranging between 104 to 110 degrees and low temperatures 79 to 85 degrees. Major to Extreme HeatRisk today through Saturday. * WHERE...Pinal County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River Valley, and Western Pima County. * WHEN...Until 8 PM MST Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
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.
43°/ 28°
Sunny
Updated nowRain Chance
36%
Humidity
25%
Max Wind
20 km/h
Avg Temp
35°C
Sunrise
05:56 AM
Sunset
06:53 PM
06:00 am
30°
07:00 am
28°
08:00 am
29°
09:00 am
33°
10:00 am
36°
11:00 am
40°
12:00 pm
42°
01:00 pm
43°
02:00 pm
43°
03:00 pm
43°
04:00 pm
42°
05:00 pm
40°
06:00 pm
41°
07:00 pm
40°
08:00 pm
36°
09:00 pm
35°
10:00 pm
34°
11:00 pm
34°
12:00 am
31°
01:00 am
31°
02:00 am
31°
03:00 am
29°
04:00 am
28°
05:00 am
31°
Today
Sat, 29 Aug
UV Index
0 Low
Precipitation
0 mm
* WHAT...Dangerously hot conditions with temperatures 98 to 105 degrees. Overnight lows 71 to 78 degrees. Major HeatRisk is expected today through Saturday with isolated Extreme HeatRisk. * WHERE...Pinal County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River Valley, and Western Pima County. * WHEN...Until 8 PM MST Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
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.
* WHAT...Dangerously hot conditions with high temperatures ranging between 104 to 110 degrees and low temperatures 79 to 85 degrees. Major to Extreme HeatRisk today through Saturday. * WHERE...Pinal County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River Valley, and Western Pima County. * WHEN...Until 8 PM MST Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
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.
* WHAT...Dangerously hot conditions with temperatures 98 to 105 degrees. Overnight lows 71 to 78 degrees. Major HeatRisk is expected today through Saturday with isolated Extreme HeatRisk. * WHERE...Pinal County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River Valley, and Western Pima County. * WHEN...Until 8 PM MST Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
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.
* WHAT...Flash flooding caused by excessive rainfall is 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 Saturday 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
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Sun, 30 Aug
Mon, 31 Aug
Tue, 01 Sept
Wed, 02 Sept
Thu, 03 Sept
Fri, 04 Sept
Sat, 05 Sept
Sun, 06 Sept
Mon, 07 Sept
Tue, 08 Sept
Wed, 09 Sept
Thu, 10 Sept
Sun
Sunrise
05:56 AM
Sunset
06:53 PM
Moon
Moonrise
07:16 PM
Moonset
06:31 AM
Moon Phase
Full Moon
Illumination
98%
Good
Air quality is satisfactory
PM2.5
7.7 μg/m³
PM10
8.5 μg/m³
Ozone (O₃)
46.0 μg/m³
NO₂
8.8 μg/m³
SO₂
0.4 μg/m³
CO
129.0 μg/m³
