Santiago, Washington Weather
Rufous Hummingbirds Arrive. Day 77 of spring. Read this microseason across nine climate regions →
Santiago weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Light Drizzle—0.02″56°51°—
- FridayJun 5Heavy Rain60%0.50″53°46°-3°
- SaturdayJun 6Light Showers84%0.11″58°43°+5°
- SundayJun 7Light Showers12%0.19″58°42°0°
- MondayJun 8Light Rain62%0.21″55°47°-3°
- TuesdayJun 9Drizzle46%0.22″50°47°-5°
- WednesdayJun 10Drizzle29%0.09″59°48°+9°
PM scrubbed by 2 hours of recent rain — PM2.5 down to 7.4 µg/m³, PM10 to 13.0 µg/m³. AQI down 7 over the last 6 hours (steady decline since this morning).
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 34 now. With UV 3.3 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 11 by mid-afternoon.
- Present
- AQI 34
- UV peak
- 3.3 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 11
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 7.4 µg/m³, PM10 to 13.0 µg/m³.
- PM2.5/PM10
- 0.57
- Wind
- breezy
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 7:16 AM
- Moonset
- 4:00 PM
- In sign
- ♑︎ Capricorn
Rufous Hummingbirds Arrive
Santiago at a glance
- Today vs. normal: 16°F below the seasonal normal for this latitude
- Last frost: May 30 (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 4, 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 — Santiago
SPC has placed Santiago in the General Thunderstorms category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- 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.