Vashon, Washington Weather
Rufous Hummingbirds Arrive. Day 78 of spring. Read this microseason across nine climate regions →
Vashon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——66°53°—
- FridayJun 5Light Drizzle28%0.02″59°48°-7°
- SaturdayJun 6Light Rain80%0.14″58°47°-1°
- SundayJun 7Light Drizzle——66°44°+8°
- MondayJun 8Overcast48%—74°44°+8°
- TuesdayJun 9Overcast45%—79°46°+5°
- WednesdayJun 10Overcast34%—60°48°-19°
AQI 37 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±4 points). Ozone at AQI 31. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 31. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 31
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5 at 5.1 µg/m³, PM10 at 6.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.74
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
The higher the clouds, the finer the weather.
- Moonrise
- 7:35 AM
- Moonset
- 5:04 PM
- In sign
- ♒︎ Aquarius
Rufous Hummingbirds Arrive
Vashon at a glance
- Today vs. normal: 12°F below the seasonal normal for this latitude
- Last frost: May 30 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Vashon
SPC has placed Vashon in the General Thunderstorms category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.