Gresham, Oregon

Last updated: 4:20 AM CDT  ·  Refresh
18°C
Feels like 18°
Clear
▲ 33°  /  ▼ 11°
Wind
2 mph W
Humidity
72%
Dew Point
12°
Pressure
29.70 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
1%
Sunrise
6:00 AM
Sunset
8:27 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Gresham is currently clear at 18°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:00AM · Sunset: 8:27PM.

Alerts

No active alerts for this location.
45 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
18°
3%
3 AM
17°
3%
4 AM
17°
3%
5 AM
13°
3%
6 AM
14°
3%
7 AM
14°
3%
8 AM
16°
3%
9 AM
19°
3%
10 AM
21°
3%
11 AM
23°
3%
12 PM
24°
3%
1 PM
30°
3%
2 PM
31°
3%
3 PM
32°
3%
4 PM
32°
3%
5 PM
33°
3%
6 PM
32°
3%
7 PM
30°
3%
8 PM
28°
3%
9 PM
23°
3%
10 PM
21°
3%
11 PM
20°
3%
12 AM
19°
3%
1 AM
18°
3%
7-Day Forecast
Today
33° 11°
Mostly Clear.
Sun
28° 11°
Mostly Clear.
Mon
27° 10°
Partly Cloudy.
Tue
30° 10°
Overcast.
Wed
28° 12°
Clear.
Thu
34° 9°
Clear.
Fri
36° 14°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 18° Clear 3% 2 mph W 72%
3 AM 17° Clear 3% 2 mph W 74%
4 AM 17° Mostly Clear 3% 2 mph W 76%
5 AM 13° Mostly Clear 3% 2 mph W 77%
6 AM 14° Partly Cloudy 3% 2 mph WNW 75%
7 AM 14° Mostly Cloudy 3% 2 mph WNW 72%
8 AM 16° Mostly Cloudy 3% 2 mph NW 67%
9 AM 19° Mostly Cloudy 3% 3 mph NW 60%
10 AM 21° Partly Cloudy 3% 4 mph NW 52%
11 AM 23° Clear 3% 4 mph NW 46%
12 PM 24° Clear 3% 5 mph NW 40%
1 PM 30° Clear 3% 6 mph NW 34%
2 PM 31° Clear 3% 7 mph NW 30%
3 PM 32° Clear 3% 9 mph NNW 28%
4 PM 32° Clear 3% 10 mph NNW 27%
5 PM 33° Clear 3% 10 mph NNW 28%
6 PM 32° Clear 3% 10 mph NNW 33%
7 PM 30° Clear 3% 9 mph NNW 38%
8 PM 28° Clear 3% 8 mph NNW 43%
9 PM 23° Clear 3% 7 mph NNW 49%
10 PM 21° Clear 3% 6 mph NNW 55%
11 PM 20° Clear 3% 5 mph NNW 60%
12 AM 19° Clear 3% 5 mph NNW 64%
1 AM 18° Clear 3% 4 mph NNW 67%
15-Day Forecast
Today
8/8
Mostly Clear
3%
11°
33°
Sun
8/9
Mostly Clear
3%
11°
28°
Mon
8/10
Partly Cloudy
6%
10°
27°
Tue
8/11
Overcast
3%
10°
30°
Wed
8/12
Clear
16%
12°
28°
Thu
8/13
Clear
3%
9°
34°
Fri
8/14
Clear
13%
14°
36°
Sat
8/15
Clear
18%
15°
32°
Sun
8/16
Clear
19%
13°
31°
Mon
8/17
Clear
21%
10°
28°
Tue
8/18
Clear
25%
14°
29°
Wed
8/19
Drizzle
60%
13°
27°
Thu
8/20
Drizzle
60%
13°
27°
Fri
8/21
Drizzle
60%
13°
27°
Sat
8/22
Drizzle
60%
13°
28°
45
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
35 AQI 6.3 µg/m³
O3
Ground-level ozone
Dominant
45 AQI 49 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 45 Good 45 35
Sun 33 Good 33 16
Mon 31 Good 31 17
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 Sat Aug 8, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE14 J/kg
MUCAPE0 J/kg
SBCIN-12168 J/kg
MLCIN0 J/kg
Lifted Index11.4
Kinematics
0–6 km Shear24 kt
0–1 km Shear7 kt
Eff. Shear—
0–1 km SRH-28
0–3 km SRH-90
Eff. SRH—
Storm Motion214° @ 17 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)—
Supercell—
K-Index-1.8
Thermo & Levels
PWAT0.72 in
0–3 km LR2.3 °C/km
700–500 LR6.4 °C/km
Total Totals25.8
LCL929 hPa
LFC—
EL—
Freezing Lvl15,341 ft