Issaquah, Washington Weather
Fireweed Ignites. Day 15 of summer. Read this microseason across nine climate regions →
Issaquah weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——77°52°—
- MondayJul 6Overcast——85°57°+8°
- TuesdayJul 7Overcast——83°51°-2°
- WednesdayJul 8Drizzle15%0.01″67°54°-16°
- ThursdayJul 9Overcast——78°47°+11°
- FridayJul 10Clear——81°50°+3°
- SaturdayJul 11Overcast——84°53°+3°
AQI 29 (Good), driven by PM2.5. AQI down 9 over the last 6 hours (gradual decline). PM2.5 at 6.2 µg/m³ (AQI 34) 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 6.2 µg/m³ (AQI 34) 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
Issaquah at a glance
- Today vs. normal: 8°F below the seasonal normal for this latitude
- Last frost: May 31 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 98027, 98029
15-Day Forecast — Issaquah
- Sun77°52°0%
- Mon85°57°0%
- Tue83°51°0%
- Wed67°54°15%
- Thu78°47°5%
- Fri81°50°2%
- Sat84°53°8%
- Sun81°50°5%
- Mon87°49°4%
- Tue87°53°4%
- Wed89°57°5%
- Thu92°58°10%
- Fri90°60°3%
- Sat78°56°10%
- Sun89°52°3%
Forecast data from Open-Meteo (CC BY 4.0).
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 Issaquah
- 98029
- 98027