Great Western Lake, Okanogan County, Washington, United States

Last updated: 5:15 PM CDT  ·  Refresh
15°C
Feels like 13°
Partly Cloudy
▲ 17°  /  ▼ 6°
Wind
4 mph SSW
Humidity
61%
Dew Point
9°
Pressure
27.40 inHg
Visibility
10 mi
UV Index
5.9
Cloud Cover
57%
Sunrise
6:30 AM
Sunset
7:10 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Great Western Lake is currently partly cloudy at 15°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:30AM · Sunset: 7:10PM.

Alerts

No active alerts for this location.
29 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
15°
3%
4 PM
14°
3%
5 PM
17°
3%
6 PM
16°
3%
7 PM
14°
3%
8 PM
13°
3%
9 PM
12°
3%
10 PM
12°
3%
11 PM
11°
3%
12 AM
11°
5%
1 AM
10°
5%
2 AM
10°
9%
3 AM
10°
9%
4 AM
9°
9%
5 AM
8°
9%
6 AM
8°
13%
7 AM
8°
13%
8 AM
9°
13%
9 AM
9°
13%
10 AM
12°
24%
11 AM
12°
28%
12 PM
12°
25%
1 PM
13°
20%
2 PM
13°
20%
7-Day Forecast
Today
17° 6°
Mostly Cloudy.
Tue
16° 8°
Overcast with a 22% chance of rain.
Wed
23° 9°
Clear.
Thu
26° 11°
Clear.
Fri
25° 11°
Clear.
Sat
24° 10°
Clear.
Sun
26° 10°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 15° Partly Cloudy 3% 4 mph SSW 61%
4 PM 14° Mostly Cloudy 3% 5 mph S 57%
5 PM 17° Mostly Cloudy 3% 6 mph S 56%
6 PM 16° Mostly Cloudy 3% 5 mph S 60%
7 PM 14° Mostly Cloudy 3% 4 mph S 64%
8 PM 13° Mostly Cloudy 3% 3 mph SSE 66%
9 PM 12° Mostly Cloudy 3% 3 mph ESE 67%
10 PM 12° Mostly Cloudy 3% 4 mph ENE 67%
11 PM 11° Partly Cloudy 3% 4 mph ENE 68%
12 AM 11° Mostly Cloudy 5% 4 mph ENE 68%
1 AM 10° Overcast 5% 4 mph ENE 69%
2 AM 10° Overcast 9% 4 mph ENE 70%
3 AM 10° Overcast 9% 4 mph ENE 70%
4 AM 9° Overcast 9% 5 mph NE 70%
5 AM 8° Overcast 9% 5 mph ENE 70%
6 AM 8° Overcast 13% 5 mph NE 69%
7 AM 8° Overcast 13% 5 mph NE 68%
8 AM 9° Overcast 13% 5 mph NE 67%
9 AM 9° Overcast 13% 4 mph ENE 65%
10 AM 12° Rain 24% 4 mph ENE 64%
11 AM 12° Rain 28% 4 mph NE 62%
12 PM 12° Overcast 25% 4 mph NE 62%
1 PM 13° Overcast 20% 5 mph NNE 61%
2 PM 13° Mostly Cloudy 20% 5 mph NNE 60%
15-Day Forecast
Today
9/14
Mostly Cloudy
3%
6°
17°
Tue
9/15
Overcast
22%
8°
16°
Wed
9/16
Clear
3%
9°
23°
Thu
9/17
Clear
3%
11°
26°
Fri
9/18
Clear
3%
11°
25°
Sat
9/19
Clear
3%
10°
24°
Sun
9/20
Clear
9%
10°
26°
Mon
9/21
Clear
25%
9°
24°
Tue
9/22
Drizzle
60%
8°
21°
Wed
9/23
Clear
25%
8°
23°
Thu
9/24
Clear
3%
9°
22°
Fri
9/25
Clear
25%
9°
21°
Sat
9/26
Clear
25%
8°
19°
Sun
9/27
Clear
25%
8°
20°
Mon
9/28
Clear
25%
8°
20°
29
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
26 AQI 4.7 µg/m³
O3
Ground-level ozone
Dominant
29 AQI 31 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 29 Good 29 26
Wed 25 Good 25 17
Thu 29 Good 29 7
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 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Mon Sep 14, 21:00'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
SBCAPE14 J/kg
MLCAPE4 J/kg
MUCAPE14 J/kg
SBCIN-0 J/kg
MLCIN-0 J/kg
Lifted Index1.9
Kinematics
0–6 km Shear32 kt
0–1 km Shear3 kt
Eff. Shear—
0–1 km SRH9
0–3 km SRH29
Eff. SRH—
Storm Motion354° @ 18 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index23.9
Thermo & Levels
PWAT0.77 in
0–3 km LR6.7 °C/km
700–500 LR5.9 °C/km
Total Totals45.2
LCL846 hPa
LFC928 hPa
EL602 hPa
Freezing Lvl7,274 ft