Smithfield, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Smithfield weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain34%0.42″95°70°—
- SundayJul 5Heavy Showers69%0.93″87°71°-8°
- MondayJul 6Thunderstorm76%0.01″82°65°-5°
- TuesdayJul 7Drizzle37%—84°64°+2°
- WednesdayJul 8Overcast18%—88°60°+4°
- ThursdayJul 9Light Drizzle50%—91°66°+3°
- FridayJul 10Drizzle59%0.01″80°65°-11°
AQI 69 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 40.4 µg/m³ (AQI 113) with a 0.98 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 40.4 µg/m³ (AQI 113) with a 0.98 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.98
- 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
- 11:13 PM
- Moonset
- 10:23 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Smithfield at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 15478
16-Day Forecast — Smithfield
- Sat95°70°34%
- Sun87°71°69%
- Mon82°65°76%
- Tue84°64°37%
- Wed88°60°18%
- Thu91°66°50%
- Fri80°65°59%
- Sat86°68°48%
- Sun78°64°37%
- Mon74°59°22%
- Tue80°58°23%
- Wed88°65°23%
- Thu93°69°35%
- Fri92°69°52%
- Sat78°70°45%
- Sun86°68°38%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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 — Smithfield
SPC has placed Smithfield in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
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.
ZIP codes in Smithfield
- 15478