Dayton, Washington Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Dayton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast23%—78°54°—
- ThursdayJun 4Overcast——70°53°-8°
- FridayJun 5Overcast——67°49°-3°
- SaturdayJun 6Overcast——64°47°-3°
- SundayJun 7Overcast——66°46°+2°
- MondayJun 8Light Drizzle25%0.01″58°53°-8°
- TuesdayJun 9Light Drizzle28%0.05″65°50°+7°
Ozone at AQI 46 now. AQI up 8 over the last 6 hours (gradual rise). With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 11 by mid-afternoon.
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 46 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 11 by mid-afternoon.
- Present
- AQI 46
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 11
PM × Wind × Precip
PM2.5 at 5.2 µg/m³ (AQI 29) with a 0.83 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.83
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:47 AM
- Moonset
- 3:37 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Dayton at a glance
- Today vs. normal: 9°F below the seasonal normal for this latitude
- Last frost: May 24 (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
Warm-season window is open
As of June 4, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
SPC Convective Outlook
Storm Prediction Center — Dayton
SPC has placed Dayton in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
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.