Extreme Heat Warning EXTREME HEAT WARNING - Pima County  - Tucson/Green Valley

NWS Tucson, Arizona Regional Radar WU South West Satellite
Radar/Satellite images courtesy of NOAA/NWS and Weather Underground.
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Updated: @ 17-Aug-2026 3:35am - next update at 3:40am   updated
Summary / Temperature Wind Rain Cloud Height
Clear Clear
Currently: 80.9, Max: 84.8, Min: 80.6 80.9°F
Temp Trend Colder 1.6°F than last hour.

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Feels like: 87.9°F

24-hr difference
2.4°FWarmer 2.4°F than yesterday at this time.
  Today Yesterday
High: 84.8°F
12:00am
104.1°F
2:57pm
Low: 80.6°F
3:27am
75.9°F
6:04am
Fire
Davis VP2 Status
ICN:1 | ISS:Ok | CON:4.7 | RCP:99%
Indoor Temp and Humidity
Indoor Temp: 79.9°F
Indoor Humidity: 47 %
 Wind from NE NE
0.2
Gust:
0 mph
0 Bft - Calm
Max Gust: 5 mph  1:23 AM
1Hr Average: 0.5 mph
Max Gust
This Month:
26.0 mph
on  Aug 3
Wind Run: 1.25 miles
Wind Year: 8364.87 miles
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 1.59 in
Season Total: 4.93 in
Last Rain
Time/Date:
8/13/2026
at 2:34 AM
34 rain days in 2026
6 rain days in August
Humidity & Barometer Almanac Sun/Moon
Humidity: 47 % Increased 4.0% since last hour.
High Humidity
Today:
47%
at 3:06 AM
Low Humidity
Today:
38%
at 1:54 AM
Barometer: 29.816 inHg Rising 0.02  inHg/hr
Baro Trend: Rising slowly
Dew Point: 58.8°F Increased 1.1°F since last hour.
Wet Bulb: 67.4
Sunrise: 5:49am
Sunset: 7:07pm
Moonrise: 10:56am
Moonset: 9:18pm
Full Moon: Thu, 27-Aug-2026 9:19pm MST
New moon: Thu, 10-Sep-2026 8:28pm MST
Sunlight:
Today:13 h 16 m 50 s
(Noon)
graph
(Midnight)
Waxing Crescent
Waxing Crescent, Moon at 4 days in cycle
22%
Illuminated
UV Summary/Forecast Solar Summary Air Quality
High Yest:   10.1 @ 11:15 AM
Aug-17

11.0
Aug-18

10.1
Aug-19

10.7
High Yest:   984.0 @ 11:14 AM
Today: 00:00 Hrs
Month: 117:20 Hrs
39
  Good
Averages / Records
Average Temperatures This Date Record Temperatures This Date
Average High
99°F
Average Low
75°F
Record High
109°F (2020)
Record Low
60°F (1938)
 NWS Weather Forecast  - Outlook: Overnight & Monday
Overnight

Overnight: Mostly Clear
Mostly Clear

Lo 81 °F
NWS forecast: Mostly clear, with a low around 81. Southeast wind around 7 mph.
Davis VP+ forecast: Mostly sunny. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 100 to 106. Southeast wind around 10 mph.
 
Monday

Monday: Sunny then Slight Chance Showers And Thunderstorms
Sunny then Slight Chance Showers And T-Storms

Hi 107 °F
NWS forecast: A slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 107. Heat index values as high as 105. South southeast wind 5 to 10 mph.
NWS Short Term Weather Forecast
Monday
Night
Monday Night: Slight Chance Showers And Thunderstorms then Mostly Clear
Slight Chance Showers And T-Storms then Mostly Clear

Lo 84 °F
Tuesday

Tuesday: Sunny
Sunny

Hi 105 °F
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy

Lo 83 °F
Wednesday

Wednesday: Sunny
Sunny

Hi 105 °F
Wednesday
Night
Wednesday Night: Partly Cloudy
Partly Cloudy

Lo 83 °F
Thursday

Thursday: Sunny then Chance Showers And Thunderstorms
Sunny then Chance Showers And T-Storms

Hi 105 °F
Thursday
Night
Thursday Night: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy

Lo 81 °F
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