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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: 19-Jan-2026 @ 4:06pm   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 1.3°F than last hour.

48.9°F

---
High Today
50.5°F
3:10 PM 		Low Today
27.0°F
8:01 AM
Yest High
51.8°F
3:09 PM 		Yest Low
28.2°F
7:55 AM
Sta* High
63.3°F
2009 		Sta* Low
15.3°F
2011
* This Station's Records Since 01/2020
Official Record High Official Record Low
Sunny, Dry Sunny, Dry

Wind from SSW Wind:  SSW
1.8
Gusting to:
 2.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
4.1 of 100
M.L. King
Jr. Day
M.L. King Jr. Day: Sunny
Sunny
Tonight

Tonight: Widespread Frost
Widespread Frost
Tuesday

Tuesday: Widespread Frost then Mostly Sunny
Widespread Frost then Mostly Sunny
Hi 51°F Lo 30°F Hi 50°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 2.3°F since last hour. 38.4°F
Last Hour: Decreased 2.3°F since last hour. -2.3°F
High 1:42 PM: 41.4°F
Low 8:01 AM: 25.8°F
Record High: 80.8°F on
28-Jun-2021
Record Low: 11.7°F on
22-Dec-2022
Wetbulb: 44.3°F
Rain Today
rain graph
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.04 in
Jan Rain: 3.78 in
Jan to Date
  Avg:10 		1.89 in
Jan to Date
  Diff from Avg:10 		Over 1.89 in for the month 1.89 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 		1.89 in
YTD
  Diff from Avg:11 		Over 1.89 in for the year 1.89 in
Last Rain
Time/Date: 		15-Jan-2026
at 4:26 AM
14 rain days in 2026
14 days in January
4 days since last rain
Current: SSW  1.8 mph
1Hr Average: 2.4 mph
Wind Run: 15.01 miles
Wind Gust
Current: 2.0 mph
Today: 5.0 mph 10:56 AM
Month: 16.0 mph 6-Jan
Year: 16.0 mph 6-Jan
Record Gust: 33.0 mph
19-Mar-2025
Sunlight:
9 h 12 m 17 s
of Sunlight Yesterday
9 h 14 m 24 s
of Sunlight Today Which is
2 min 7 sec longer than
yesterday
9 h 16 m 35 s
of Sunlight Tomorrow
 (Noon ?>) graph (Midnight
 Legend

Waxing Crescent
Waxing Crescent, 1 days, 4 hours, 14 minutes in cycle
2%
Illuminated
Humidity Barometer
Current: Decreased 3% since last hour. 67%
Last Hour: Decreased 3% since last hour. 3%
High 11:26 AM: 97%
Low 3:48 PM: 66%
Record High: 100%
30-Nov-2014
Record Low: 0%
26-Jan-2015
Current: Falling 0.4 inHg/hr 1024.7 inHg
Last Hour: Steady
High 9:44 AM: 1028.6
Low 4:05 PM: 1024.7
Record High: 1045.4 inHg
30-Dec-2014
Record Low: 979.4 inHg
27-Dec-2022
Heating Degree Days Coming Soon Wind Chill
Today: 23.0
Jan: 415.6
2026 to Date: 414.6
Cooling Degree Days
2026 to Date: 0.0
Current: 48.9°F
Low 8:01 AM: 27.0°F
Yesterday: 27.7°F
Record: 14.2°F
15-Jan-2024
Current UV Index Current Solar Energy9
0.0
Sunburn in
720 Minutes 		Highest:
12:18 PM
1.6
32 W/m2
100%
W/m2 ⇒ SI 		High Today:
12:09 PM
 413  W/m2
Record:
1531 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 42.9°F
Sunrise: 07:46
Sunset: 16:58
Moonrise: 09:02
Moonset: 17:56
Full Moon: 01-Feb-2026
New Moon: 12:02 UTC
17-Feb-2026
Updated at Midnight
Current ET: 0.01 in
7-Days Rain: 0.04 in
7-Days ET: 0.07 in
7-Day: 0.027 in water in deficit of what evaporated in last 7 days. 0.027 in
January: 3.64 in water in excess of what evaporated this month. 3.64 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:18 | 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).   9 Solar Index represents either an absolute scale of solar energy (W/m²) using the station’s recorded maximum or a percentage of computed theoretical solar maximum using the station’s location and time of day. These indices differ most when the sun is low on the horizon. The current scale is shown, and will toggle if it or the icon is clicked.   10 Historical average only to day 19 of just the month of January for this station since 2020.   11 Historical average rain this season to day 19 of January for this station since 2020.
 NWS Weather Forecast  -   Outlook M.L. King Jr. Day & Tonight
M.L. King
Jr. Day
M.L. King Jr. Day: Sunny
Sunny

Hi 51°F 		NWS forecast: Sunny. High near 51, with temperatures falling to around 47 in the afternoon. East wind around 2 mph.
Local station forecast: Increasing clouds and warmer, precipitation possible within 24 to 48 hrs. 		Tonight

Tonight: Widespread Frost
Widespread Frost

Lo 30°F 		NWS forecast: Widespread frost after 10pm. Partly cloudy. Low around 30, with temperatures rising to around 32 overnight. East northeast wind around 1 mph.
 NWS Short Term Weather Forecast
Tuesday

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

Wednesday: Widespread Frost then Mostly Sunny
Widespread Frost then Mostly Sunny
Wednesday
Night
Wednesday Night: Widespread Frost
Widespread Frost
Thursday

Thursday: Widespread Frost then Mostly Sunny
Widespread Frost then Mostly Sunny
Thursday
Night
Thursday Night: Widespread Frost
Widespread Frost
Friday

Friday: Widespread Frost then Mostly Sunny
Widespread Frost then Mostly Sunny
Hi 50°F Lo 31°F Hi 48°F Lo 32°F Hi 47°F Lo 33°F Hi 48°F
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