Sammamish, Washington Weather
Solstice Light Crests. Day 88 of spring. Read this microseason across nine climate regions →
Sammamish weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——86°63°—
- TuesdayJun 16Overcast——66°55°-20°
- WednesdayJun 17Overcast——75°52°+9°
- ThursdayJun 18Overcast——79°47°+4°
- FridayJun 19Overcast——82°51°+3°
- SaturdayJun 20Overcast——80°48°-2°
- SundayJun 21Clear——81°50°+1°
AQI 52 (Moderate), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 104 now. With UV 8.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 79 around 1 PM.
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 104 now. With UV 8.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 79 around 1 PM.
- Present
- AQI 104
- UV peak
- 8.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 79
PM × Wind × Precip
PM2.5 at 15.0 µg/m³ (AQI 62) with a 0.74 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.74
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:08 AM
- Moonset
- 9:40 PM
- In sign
- ♋︎ Cancer
Solstice Light Crests
Sammamish at a glance
- Today vs. normal: 19°F above the seasonal normal for this latitude
- Last frost: June 1 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Sammamish
- Mon86°63°1%
- Tue66°55°2%
- Wed75°52°2%
- Thu79°47°0%
- Fri82°51°0%
- Sat80°48°1%
- Sun81°50°3%
- Mon84°51°1%
- Tue88°53°1%
- Wed83°52°3%
- Thu71°50°10%
- Fri65°52°16%
- Sat74°53°16%
- Sun77°52°14%
- Mon79°49°12%
- Tue78°45°13%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Sammamish
Right now in the garden
Peak growing season
As of June 15, 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