Kapowsin, Washington Weather
Rufous Hummingbirds Arrive. Day 76 of spring. Read this microseason across nine climate regions →
Kapowsin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast10%—68°55°—
- ThursdayJun 4Drizzle—0.04″63°51°-5°
- FridayJun 5Drizzle85%0.05″55°47°-8°
- SaturdayJun 6Showers90%0.17″53°42°-2°
- SundayJun 7Light Drizzle——62°42°+9°
- MondayJun 8Drizzle58%0.12″55°49°-7°
- TuesdayJun 9Light Drizzle51%0.01″60°47°+5°
PM2.5 at 12.1 µg/m³, PM10 at 17.1 µg/m³ — typical background levels with no transport signature. AQI up 5 over the last 6 hours (gradual rise).
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 47 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 47
- UV peak
- 3.8 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 47
PM × Wind × Precip
PM2.5 at 12.1 µg/m³, PM10 at 17.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.71
- 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
- 6:35 AM
- Moonset
- 2:44 PM
- In sign
- ♑︎ Capricorn
Rufous Hummingbirds Arrive
Kapowsin at a glance
- Today vs. normal: 67°F — typical for the season
- Last frost: May 28 (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 3, 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 — Kapowsin
SPC has placed Kapowsin in the General Thunderstorms category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- 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.