Washington, Pennsylvania Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Washington weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——83°52°—
- FridayJun 5Overcast——86°59°+3°
- SaturdayJun 6Light Drizzle83%—82°60°-4°
- SundayJun 7Light Showers83%0.01″78°63°-4°
- MondayJun 8Overcast——83°59°+5°
- TuesdayJun 9Partly Cloudy——83°62°0°
- WednesdayJun 10Light Drizzle21%—82°62°-1°
PM2.5 at 40.3 µg/m³ (AQI 113) with a 1.00 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust. AQI flat over the last 6 hours (within ±3 points).
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 40.3 µg/m³ (AQI 113) with a 1.00 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 1.00
- 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
- 3:50 AM
- Moonset
- 1:20 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Washington at a glance
- Today vs. normal: 22°F below the seasonal normal for this latitude
- Last frost: April 17 (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 — Washington
SPC has placed Washington in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3SLGTSlight Risk
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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.