Slippery Rock, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Slippery Rock weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Rain61%0.15″91°67°—
- SundayJul 5Light Rain75%0.07″83°68°-8°
- MondayJul 6Thunderstorm70%0.17″78°65°-5°
- TuesdayJul 7Light Drizzle25%—84°61°+6°
- WednesdayJul 8Overcast10%—85°59°+1°
- ThursdayJul 9Drizzle48%0.01″84°64°-1°
- FridayJul 10Drizzle48%—79°65°-5°
AQI 45 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 10.2 µg/m³ (AQI 53) with a 0.98 fine-to-coarse ratio and 4 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 during the projected peak around 7 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~96%) — afternoon ozone should stay flat.
- Present
- AQI 34
- UV peak
- 3.7 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 10.2 µg/m³ (AQI 53) with a 0.98 fine-to-coarse ratio and 4 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
- 11:16 PM
- Moonset
- 10:23 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Slippery Rock at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 22 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 16057
16-Day Forecast — Slippery Rock
- Sat90°67°61%
- Sun83°68°75%
- Mon78°65°70%
- Tue84°61°25%
- Wed85°59°10%
- Thu84°64°48%
- Fri79°65°48%
- Sat83°63°34%
- Sun77°61°26%
- Mon72°57°18%
- Tue76°57°17%
- Wed85°64°40%
- Thu87°66°39%
- Fri83°68°49%
- Sat83°68°35%
- Sun82°62°39%
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 — Slippery Rock
SPC has placed Slippery Rock in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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 Slippery Rock
- 16057