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: @ 18-Aug-2026 5:05am - next update at 5:10am   updated
Summary / Temperature Wind Rain Cloud Height
Clear Clear
Currently: 85.9, Max: 89.9, Min: 83.6 85.9°F
Temp Trend Warmer 0.7°F than last hour.

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Feels like: 92.1°F

24-hr difference
7.1°FWarmer 7.1°F than yesterday at this time.
  Today Yesterday
High: 89.9°F
12:00am
109.6°F
2:53pm
Low: 83.6°F
2:27am
76.8°F
6:24am
Fire
Davis VP2 Status
ICN:1 | ISS:Ok | CON:4.7 | RCP:99%
Indoor Temp and Humidity
Indoor Temp: 79.9°F
Indoor Humidity: 44 %
 Wind from SE SE
1.6
Gust:
4 mph
0 Bft - Light Air
Max Gust: 8.1 mph  4:23 AM
1Hr Average: 1.4 mph
Max Gust
This Month:
26.0 mph
on  Aug 3
Wind Run: 4.47 miles
Wind Year: 8398.56 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: 38 % Decreased 2.0% since last hour.
High Humidity
Today:
45%
at 2:24 AM
Low Humidity
Today:
34%
at 12:00 AM
Barometer: 29.78 inHg Rising 0.03  inHg/hr
Baro Trend: Rising slowly
Dew Point: 57.3°F Decreased 0.8°F since last hour.
Wet Bulb: 68.5
Sunrise: 5:50am
Sunset: 7:06pm
Moonrise: 11:56am
Moonset: 9:48pm
Full Moon: Thu, 27-Aug-2026 9:19pm MST
New moon: Thu, 10-Sep-2026 8:28pm MST
Sunlight:
Today:13 h 15 m 4 s
(Noon)
graph
(Midnight)
Waxing Crescent
Waxing Crescent, Moon at 5 days in cycle
32%
Illuminated
UV Summary/Forecast Solar Summary Air Quality
High Yest:   10.6 @ 12:12 PM
Aug-18

10.3
Aug-19

10.6
Aug-20

10.7
High Yest:   947.0 @ 12:25 PM
Today: 00:00 Hrs
Month: 127:01 Hrs
35
  Good
Averages / Records
Average Temperatures This Date Record Temperatures This Date
Average High
99°F
Average Low
75°F
Record High
108°F (2020)
Record Low
61°F (1918)
 NWS Weather Forecast  - Outlook: Overnight & Tuesday
Overnight

Overnight: Mostly Clear
Mostly Clear

Lo 84 °F
NWS forecast: Mostly clear, with a low around 84. Southeast wind around 10 mph.
Davis VP+ forecast: Mostly sunny. A 10 percent chance of showers and thunderstorms in the afternoon. Highs 99 to 105. Southeast wind around 10 mph.
 
Tuesday

Tuesday: Sunny
Sunny

Hi 106 °F
NWS forecast: Sunny, with a high near 106. Heat index values as high as 105. Southwest wind 3 to 8 mph.
NWS Short Term Weather Forecast
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy

Lo 82 °F
Wednesday

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

Hi 105 °F
Wednesday
Night
Wednesday Night: Patchy Blowing Dust then Partly Cloudy
Patchy Blowing Dust then 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 Mostly Cloudy
Chance Showers And T-Storms then Mostly Cloudy

Lo 80 °F
Friday

Friday: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Hi 107 °F
Friday
Night
Friday Night: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy

Lo 82 °F
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