Sammamish, Washington Weather
Fireweed Ignites. Day 15 of summer. Read this microseason across nine climate regions →
Sammamish weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——75°51°—
- MondayJul 6Overcast——84°53°+9°
- TuesdayJul 7Overcast——82°49°-2°
- WednesdayJul 8Drizzle16%0.02″64°47°-18°
- ThursdayJul 9Overcast——76°45°+12°
- FridayJul 10Clear——81°48°+5°
- SaturdayJul 11Overcast——83°51°+2°
AQI 27 (Good), driven by PM2.5. AQI down 10 over the last 6 hours (gradual decline). PM2.5 at 6.5 µg/m³ (AQI 36) with a 0.86 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 6.5 µg/m³ (AQI 36) with a 0.86 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.86
- Wind
- calm
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:34 PM
- Moonset
- 11:24 AM
- In sign
- ♓︎ Pisces
Fireweed Ignites
Sammamish at a glance
- Today vs. normal: 11°F below the seasonal normal for this latitude
- Last frost: June 1 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 98074, 98075
15-Day Forecast — Sammamish
- Sun75°51°0%
- Mon84°53°0%
- Tue82°49°0%
- Wed64°47°16%
- Thu76°45°5%
- Fri81°48°2%
- Sat83°51°9%
- Sun79°47°5%
- Mon84°46°4%
- Tue84°49°4%
- Wed86°54°5%
- Thu89°54°10%
- Fri89°57°3%
- Sat77°54°10%
- Sun85°49°3%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Sammamish
Right now in the garden
Peak growing season
As of July 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.
ZIP codes in Sammamish
- 98029
- 98075
- 98074