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: @ 20-Aug-2026 3:35am - next update at 3:40am   updated
Summary / Temperature Wind Rain Cloud Height
Clear Clear
Currently: 81.7, Max: 83.5, Min: 81.4 81.7°F
Temp Trend Colder 0.4°F than last hour.

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Feels like: 92.2°F

24-hr difference
-6.6°FColder 6.6°F than yesterday at this time.
  Today Yesterday
High: 83.5°F
2:56am
106.6°F
3:51pm
Low: 81.4°F
12:40am
77.6°F
7:38pm
Fire
Davis VP2 Status
ICN:1 | ISS:Ok | CON:4.7 | RCP:99%
Indoor Temp and Humidity
Indoor Temp: 80.3°F
Indoor Humidity: 49 %
 Calm NNW
0
Gust:
0 mph
0 Bft - Calm
Max Gust: 9.2 mph  12:15 AM
1Hr Average: 1.6 mph
Max Gust
This Month:
32.0 mph
on  Aug 19
Wind Run: 2.80 miles
Wind Year: 8473.07 miles
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0.12 in
Storm Rain: 0.12 in
This Month: 1.71 in
Season Total: 5.05 in
Last Rain
Time/Date:
8/19/2026
at 7:25 PM
35 rain days in 2026
7 rain days in August
Humidity & Barometer Almanac Sun/Moon
Humidity: 55 % Decreased 1.0% since last hour.
High Humidity
Today:
60%
at 12:26 AM
Low Humidity
Today:
50%
at 2:43 AM
Barometer: 29.83 inHg Rising 0.01  inHg/hr
Baro Trend: Steady
Dew Point: 64°F Decreased 0.8°F since last hour.
Wet Bulb: 70.4
Sunrise: 5:51am
Sunset: 7:04pm
Moonrise: 1:56pm
Moonset: 10:59pm
Full Moon: Thu, 27-Aug-2026 9:19pm MST
New moon: Thu, 10-Sep-2026 8:28pm MST
Sunlight:
Today:13 h 11 m 31 s
(Noon)
graph
(Midnight)
First Quarter
First Quarter, Moon at 7 days in cycle
50%
Illuminated
UV Summary/Forecast Solar Summary Air Quality
High Yest:   10.5 @ 12:18 PM
Aug-20

10.5
Aug-21

10.3
Aug-22

10.9
High Yest:   923.0 @ 12:03 PM
Today: 00:00 Hrs
Month: 144:58 Hrs
50
  Good
Averages / Records
Average Temperatures This Date Record Temperatures This Date
Average High
99°F
Average Low
75°F
Record High
110°F (1915)
Record Low
55°F (1917)
 NWS Weather Forecast  - Outlook: Overnight & Thursday
Overnight

Overnight: Partly Cloudy
Partly Cloudy

Lo 81 °F
NWS forecast: Partly cloudy, with a low around 81. South southeast wind around 7 mph.
Davis VP+ forecast: Mostly sunny. Highs 99 to 105. South wind around 10 mph becoming west in the afternoon.
 
Thursday

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

Hi 105 °F
NWS forecast: A slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 105. Heat index values as high as 106. Southwest wind 3 to 12 mph.
NWS Short Term Weather Forecast
Thursday
Night
Thursday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy

Lo 81 °F
Friday

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

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

Lo 81 °F
Saturday

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

Hi 108 °F
Saturday
Night
Saturday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy

Lo 82 °F
Sunday

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

Hi 106 °F
Sunday
Night
Sunday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy

Lo 82 °F
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