Portland, Oregon

Last updated: 9:06 PM CDT  ·  Refresh
19°C
Feels like 18°
Overcast
▲ 21°  /  ▼ 9°
Wind
5 mph SW
Humidity
52%
Dew Point
11°
Pressure
29.61 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
90%
Sunrise
6:59 AM
Sunset
7:03 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Portland is currently overcast at 20°C. Precipitation is likely — peak probability 84% around 11 PM. Sunrise: 6:59AM · Sunset: 7:03PM.

Alerts

No active alerts for this location.
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
19°
37%
8 PM
21°
60%
9 PM
19°
74%
10 PM
17°
80%
11 PM
16°
84%
12 AM
16°
83%
1 AM
16°
78%
2 AM
14°
68%
3 AM
14°
79%
4 AM
14°
71%
5 AM
15°
66%
6 AM
13°
82%
7 AM
12°
70%
8 AM
12°
70%
9 AM
12°
79%
10 AM
11°
78%
11 AM
11°
78%
12 PM
11°
78%
1 PM
11°
77%
2 PM
15°
61%
3 PM
16°
61%
4 PM
16°
52%
5 PM
16°
32%
6 PM
16°
23%
7-Day Forecast
Tonight
21° 9°
Rain, 80% chance.
Fri
18° 10°
Rain, 78% chance.
Sat
18° 9°
Mostly Cloudy.
Sun
21° 8°
Mostly Clear with a 32% chance of rain.
Mon
20° 6°
Mostly Cloudy.
Tue
19° 11°
Drizzle, 45% chance.
Wed
19° 11°
Mostly Cloudy.
TimeTempConditionsPrecipWindHumidity
Now 19° Overcast 37% 5 mph SW 52%
8 PM 21° Overcast 60% 5 mph WSW 58%
9 PM 19° Overcast 74% 5 mph WSW 71%
10 PM 17° Rain 80% 3 mph S 82%
11 PM 16° Rain 84% 5 mph SSE 89%
12 AM 16° Rain 83% 6 mph SSE 90%
1 AM 16° Rain 78% 6 mph S 90%
2 AM 14° Overcast 68% 6 mph S 91%
3 AM 14° Partly Cloudy 79% 8 mph S 90%
4 AM 14° Mostly Cloudy 71% 10 mph S 88%
5 AM 15° Overcast 66% 12 mph S 83%
6 AM 13° Overcast 82% 16 mph SSW 84%
7 AM 12° Mostly Cloudy 70% 18 mph SSW 84%
8 AM 12° Rain 70% 20 mph SSW 85%
9 AM 12° Rain 79% 19 mph SSW 84%
10 AM 11° Rain 78% 18 mph SW 84%
11 AM 11° Rain 78% 17 mph SW 84%
12 PM 11° Overcast 78% 16 mph WSW 80%
1 PM 11° Overcast 77% 14 mph WSW 76%
2 PM 15° Mostly Cloudy 61% 13 mph WSW 73%
3 PM 16° Mostly Cloudy 61% 12 mph WSW 70%
4 PM 16° Partly Cloudy 52% 12 mph W 67%
5 PM 16° Partly Cloudy 32% 11 mph W 65%
6 PM 16° Partly Cloudy 23% 9 mph W 68%
15-Day Forecast
Today
9/24
Rain
80%
9°
21°
Fri
9/25
Rain
78%
10°
18°
Sat
9/26
Mostly Cloudy
9%
9°
18°
Sun
9/27
Mostly Clear
32%
8°
21°
Mon
9/28
Mostly Cloudy
3%
6°
20°
Tue
9/29
Drizzle
45%
11°
19°
Wed
9/30
Mostly Cloudy
18%
11°
19°
Thu
10/1
Mostly Cloudy
10%
10°
20°
Fri
10/2
Clear
34%
8°
18°
Sat
10/3
Overcast
3%
7°
18°
Sun
10/4
Overcast
60%
8°
19°
Mon
10/5
Clear
60%
9°
21°
Tue
10/6
Clear
25%
10°
22°
Wed
10/7
Drizzle
60%
11°
23°
Thu
10/8
Drizzle
60%
11°
23°
52
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
52 AQI 9.6 µg/m³
O3
Ground-level ozone
19 AQI 22 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 19 52
Sat 25 Good 25 23
Sun 37 Good 26 37
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Thu Sep 24, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE1 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index5.1
Kinematics
0–6 km Shear46 kt
0–1 km Shear17 kt
Eff. Shear—
0–1 km SRH19
0–3 km SRH96
Eff. SRH—
Storm Motion240° @ 40 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index19.3
Thermo & Levels
PWAT1.08 in
0–3 km LR5.8 °C/km
700–500 LR5.8 °C/km
Total Totals34.9
LCL887 hPa
LFC—
EL—
Freezing Lvl11,020 ft