Heat Advisory — Foothills and Valleys of Snohomish and Northern King Counties, WA, Foothills and Valleys of Central King County, WA, Foothills and Valleys of Pierce and Southern King Counties, WA, Downtown Everett / Marysville Area, WA, Shoreline / Lynnwood / South Everett Area, WA, Eastside, WA, City of Seattle, WA, Lowlands of Pierce and Southern King Counties, WA, Eastern Kitsap County, WA 1:00 AM

Seattle, Washington

Last updated: 7:19 PM CDT  ·  Refresh
28°C
Feels like 28°
Mostly Clear
▲ 29°  /  ▼ 11°
Wind
6 mph NNW
Humidity
34%
Dew Point
12°
Pressure
29.74 inHg
Visibility
10 mi
UV Index
6.7
Cloud Cover
23%
Sunrise
5:12 AM
Sunset
9:11 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Seattle is currently mostly clear at 28°C. Precipitation is likely — peak probability 58% around 5 PM. Atmospheric instability is elevated (CAPE up to 526 J/kg) — isolated convective development possible. Sunrise: 5:12AM · Sunset: 9:11PM.

Alerts

Heat Advisory
Foothills and Valleys of Snohomish and Northern King Counties, WA, Foothills and Valleys of Central King County, WA, Foothills and Valleys of Pierce and Southern King Counties, WA, Downtown Everett / Marysville Area, WA, Shoreline / Lynnwood / South Everett Area, WA, Eastside, WA, City of Seattle, WA, Lowlands of Pierce and Southern King Counties, WA, Eastern Kitsap County, WA
Expires 1:00 AM
46 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
11%
6 PM
28°
29%
7 PM
27°
21%
8 PM
25°
21%
9 PM
23°
14%
10 PM
22°
14%
11 PM
21°
3%
12 AM
19°
3%
1 AM
16°
3%
2 AM
15°
3%
3 AM
14°
3%
4 AM
13°
7%
5 AM
11°
6%
6 AM
11°
7%
7 AM
11°
3%
8 AM
11°
5%
9 AM
12°
5%
10 AM
12°
5%
11 AM
13°
5%
12 PM
17°
11%
1 PM
19°
25%
2 PM
20°
35%
3 PM
21°
36%
4 PM
21°
39%
7-Day Forecast
Today
29° 11°
Rain, 21% chance.
Thu
22° 11°
Drizzle, 69% chance.
Fri
22° 11°
Rain, 72% chance.
Sat
21° 9°
Rain, 69% chance.
Sun
20° 10°
Mostly Cloudy with a 21% chance of rain.
Mon
21° 11°
Clear.
Tue
21° 9°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 28° Mostly Clear 11% 6 mph NNW 34%
6 PM 28° Partly Cloudy 29% 6 mph N 36%
7 PM 27° Rain 21% 6 mph NNE 41%
8 PM 25° Rain 21% 5 mph ENE 47%
9 PM 23° Drizzle 14% 4 mph E 52%
10 PM 22° Drizzle 14% 5 mph ESE 56%
11 PM 21° Mostly Clear 3% 5 mph ESE 61%
12 AM 19° Mostly Clear 3% 4 mph SSE 66%
1 AM 16° Mostly Clear 3% 3 mph S 70%
2 AM 15° Partly Cloudy 3% 3 mph S 74%
3 AM 14° Mostly Cloudy 3% 3 mph S 78%
4 AM 13° Mostly Cloudy 7% 4 mph SSW 82%
5 AM 11° Mostly Cloudy 6% 4 mph SSW 84%
6 AM 11° Mostly Cloudy 7% 5 mph SSW 83%
7 AM 11° Overcast 3% 6 mph SSW 82%
8 AM 11° Overcast 5% 7 mph SSW 79%
9 AM 12° Overcast 5% 7 mph SSW 76%
10 AM 12° Overcast 5% 6 mph SSW 72%
11 AM 13° Overcast 5% 6 mph SW 68%
12 PM 17° Overcast 11% 6 mph SW 63%
1 PM 19° Drizzle 25% 5 mph SW 59%
2 PM 20° Drizzle 35% 5 mph SW 56%
3 PM 21° Drizzle 36% 5 mph SW 54%
4 PM 21° Drizzle 39% 5 mph SW 52%
15-Day Forecast
Today
6/24
Rain
21%
11°
29°
Thu
6/25
Drizzle
69%
11°
22°
Fri
6/26
Rain
72%
11°
22°
Sat
6/27
Rain
69%
9°
21°
Sun
6/28
Mostly Cloudy
21%
10°
20°
Mon
6/29
Clear
13%
11°
21°
Tue
6/30
Clear
13%
9°
21°
Wed
7/1
Clear
29%
9°
23°
Thu
7/2
Drizzle
50%
9°
27°
Fri
7/3
Drizzle
41%
11°
23°
Sat
7/4
Clear
41%
11°
20°
Sun
7/5
Clear
38%
11°
25°
Mon
7/6
Clear
20%
11°
28°
Tue
7/7
Clear
66%
12°
29°
Wed
7/8
Clear
38%
13°
30°
46
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
46 AQI 8.3 µg/m³
O3
Ground-level ozone
35 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 46 Good 35 46
Fri 32 Good 27 32
Sat 30 Good 30 28
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 Wed Jun 24, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE505 J/kg
MLCAPE295 J/kg
MUCAPE505 J/kg
SBCIN-0 J/kg
MLCIN0 J/kg
Lifted Index-3.1
Kinematics
0–6 km Shear14 kt
0–1 km Shear4 kt
Eff. Shear13 kt
0–1 km SRH-15
0–3 km SRH-44
Eff. SRH-44
Storm Motion174° @ 13 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado-0.0
STP (eff)0.0
Supercell0.0
K-Index34.7
Thermo & Levels
PWAT1.06 in
0–3 km LR8.4 °C/km
700–500 LR7.0 °C/km
Total Totals53.0
LCL791 hPa
LFC994 hPa
EL297 hPa
Freezing Lvl11,076 ft