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Air Stagnation Advisory AIR STAGNATION ADVISORY - Portland

NWS Northwest Regional Radar Web Cam
Radar/Satellite images courtesy of National Weather Service.
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METRIC | IMPERIAL
Updated: 17-Jan-2026 @ 8:42pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 0.2°F than last hour.

38.8°F

Wind Chill:  38.8°F
---
High Today
52.3°F
3:31 PM 		Low Today
30.7°F
6:22 AM
Yest High
54.3°F
3:04 PM 		Yest Low
37.1°F
11:28 PM
Sta* High
58.2°F
2009 		Sta* Low
5.7°F
2012
* This Station's Records Since 01/2020
Official Record High Official Record Low
Night time, Dry, Overcast Night time, Dry, Overcast

Wind from N Wind:  N
1.5
Gusting to:
 1.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
-1.2 of 100
Tonight

Tonight: Mostly Clear then Areas Of Frost
Mostly Clear then Areas Of Frost
Sunday

Sunday: Widespread Frost then Sunny
Widespread Frost then Sunny
Sunday
Night
Sunday Night: Mostly Clear then Areas Of Frost
Mostly Clear then Areas Of Frost
Lo 34°F Hi 51°F Lo 34°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 1.7°F since last hour. 34.4°F
Last Hour: Decreased 1.7°F since last hour. -1.7°F
High 2:08 PM: 44.4°F
Low 6:28 AM: 29.4°F
Record High: 80.8°F on
28-Jun-2021
Record Low: 11.7°F on
22-Dec-2022
Wetbulb: 37.1°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.28 in
Jan Rain: 3.78 in
Jan to Date
  Avg:10 		1.46 in
Jan to Date
  Diff from Avg:10 		Over 2.32 in for the month 2.32 in
Jan Avg: 2.91 in
Diff from Avg: Over 0.87 in for the month 0.87 in
Season:1 3.780 in
YTD
  Avg:11 		1.46 in
YTD
  Diff from Avg:11 		Over 2.32 in for the year 2.32 in
Last Rain
Time/Date: 		15-Jan-2026
at 4:26 AM
14 rain days in 2026
14 days in January
2 days since last rain
Current: N  1.5 mph
1Hr Average: 0.4 mph
Wind Run: 19.95 miles
Wind Gust
Current: 1.0 mph
Today: 7.0 mph 12:05 PM
Month: 16.0 mph 6-Jan
Year: 16.0 mph 6-Jan
Record Gust: 33.0 mph
19-Mar-2025
Sunlight:
9 h 8 m 13 s
of Sunlight Yesterday
9 h 10 m 14 s
of Sunlight Today Which is
2 min 1 sec longer than
yesterday
9 h 12 m 17 s
of Sunlight Tomorrow
 (Noon ?>) graph (Midnight
 Legend

Waning Crescent
Waning Crescent, 29 days, 3 hours, 0 minutes in cycle
0%
Illuminated
Humidity Barometer
Current: Decreased 5% since last hour. 84%
Last Hour: Decreased 5% since last hour. 5%
High 10:59 AM: 98%
Low 3:20 PM: 72%
Record High: 100%
30-Nov-2014
Record Low: 0%
26-Jan-2015
Current: Rising 0.2 inHg/hr 1025.1 inHg
Last Hour: Steady
High 12:04 AM: 1027.9
Low 2:54 PM: 1023.8
Record High: 1045.4 inHg
30-Dec-2014
Record Low: 979.4 inHg
27-Dec-2022
Heating Degree Days Coming Soon Wind Chill
Today: 25.0
Jan: 362.7
2026 to Date: 361.8
Cooling Degree Days
2026 to Date: 0.0
Current: 38.8°F
Low 6:22 AM: 30.7°F
Yesterday: 36.5°F
Record: 14.2°F
15-Jan-2024
UV Summary/Forecast Solar Summary
High Today:   1.4 @ 11:43 AM
Jan-18

0.9 		Jan-19

0.9 		Jan-20

1.0
High Today:  
396 W/m2 @ 12:17 PM
Sun Hours Today:
00:23
   This Month: 03:18 Hrs
Rise: 07:48  Set: 16:55
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Evening
YTD Avg Temp: 43.6°F
Sunrise: 07:48
Sunset: 16:55
Moonrise: 08:11
Moonset: 15:37
Full Moon: 03-Jan-2026
New Moon: 19:53 UTC
18-Jan-2026
Updated at Midnight
Current ET: 0.01 in
7-Days Rain: 0.28 in
7-Days ET: 0.06 in
7-Day: 0.221 in water in excess of what evaporated in last 7 days. 0.221 in
January: 3.67 in water in excess of what evaporated this month. 3.67 in
HIGHS: LOWS:
110.1°F
27-Jun-2021 		15.6°F
16-Jan-2024
Daytime Records
  93.0°F°F
27-Jun-2021 		  23.0°F°F
13-Jan-2024
Nitetime Records
  82.8°F°F
28-Jun-2021 		  20.3°F°F
16-Jan-2024
ICN:13 | S3C2:0 | Ajax 3.xx
ISS:Ok | CON:3.1 | RCP:99%
1 Rain season: Jan 1st to Dec 31st.   5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present).   10 Historical average only to day 17 of just the month of January for this station since 2020.   11 Historical average rain this season to day 17 of January for this station since 2020.
 NWS Weather Forecast  -   Outlook Tonight & Sunday
Tonight

Tonight: Mostly Clear then Areas Of Frost
Mostly Clear then Areas Of Frost

Lo 34°F 		NWS forecast: Areas of frost after 1am. Mostly clear, with a low around 34. East wind around 2 mph.
Local station forecast: Partly cloudy with little temp change. 		Sunday

Sunday: Widespread Frost then Sunny
Widespread Frost then Sunny

Hi 51°F 		NWS forecast: Widespread frost before 10am. Sunny. High near 51, with temperatures falling to around 47 in the afternoon. East wind around 2 mph.
 NWS Short Term Weather Forecast
Sunday
Night
Sunday Night: Mostly Clear then Areas Of Frost
Mostly Clear then Areas Of Frost
M.L. King
Jr. Day
M.L. King Jr. Day: Widespread Frost then Sunny
Widespread Frost then Sunny
Monday
Night
Monday Night: Areas Of Frost
Areas Of Frost
Tuesday

Tuesday: Widespread Frost then Mostly Sunny
Widespread Frost then Mostly Sunny
Tuesday
Night
Tuesday Night: Areas Of Frost
Areas Of Frost
Wednesday

Wednesday: Widespread Frost then Partly Sunny
Widespread Frost then Partly Sunny
Wednesday
Night
Wednesday Night: Areas Of Frost then Slight Chance Light Rain
Areas Of Frost then Slight Chance Light Rain
Lo 34°F Hi 51°F Lo 34°F Hi 50°F Lo 34°F Hi 49°F Lo 35°F
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