Snohomish, Washington Weather
Rufous Hummingbirds Arrive. Day 76 of spring. Read this microseason across nine climate regions →
Snohomish weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Light Drizzle11%—69°55°—
- ThursdayJun 4Light Rain43%0.26″62°52°-7°
- FridayJun 5Drizzle80%—56°45°-6°
- SaturdayJun 6Heavy Drizzle78%—54°43°-2°
- SundayJun 7Light Drizzle——65°42°+11°
- MondayJun 8Heavy Drizzle53%0.11″55°48°-10°
- TuesdayJun 9Light Drizzle45%—62°47°+7°
PM2.5 at 10.6 µg/m³ (AQI 54) with a 0.68 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust. 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 53 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 53
- UV peak
- 3.0 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 53
PM × Wind × Precip
PM2.5 at 10.6 µg/m³ (AQI 54) with a 0.68 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.68
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 6:39 AM
- Moonset
- 2:38 PM
- In sign
- ♑︎ Capricorn
Rufous Hummingbirds Arrive
Snohomish at a glance
- Today vs. normal: 66°F — typical for the season
- Last frost: June 3 (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 — Snohomish
SPC has placed Snohomish 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.