Sylvan Hills, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Sylvan Hills weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Drizzle29%0.08″93°67°—
- SundayJul 5Heavy Rain84%0.40″86°70°-7°
- MondayJul 6T-storm w/ Hail85%0.16″77°64°-9°
- TuesdayJul 7Showers65%0.26″77°62°0°
- WednesdayJul 8Overcast15%—83°57°+6°
- ThursdayJul 9Overcast43%—89°62°+6°
- FridayJul 10Drizzle40%—85°66°-4°
AQI 57 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.1 µg/m³ (AQI 55) with a 0.95 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
Ozone × UV × Sky
Ozone at AQI 40 now. With UV 4.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 21 around 1 PM.
- Present
- AQI 40
- UV peak
- 4.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 21
PM × Wind × Precip
PM2.5 at 11.1 µg/m³ (AQI 55) with a 0.95 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.95
- 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
- 11:08 PM
- Moonset
- 10:16 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Sylvan Hills at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: April 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Sylvan Hills
- Sat93°67°29%
- Sun86°70°84%
- Mon77°64°85%
- Tue77°62°65%
- Wed83°57°15%
- Thu89°62°43%
- Fri85°66°40%
- Sat83°67°36%
- Sun78°62°27%
- Mon78°61°18%
- Tue74°63°15%
- Wed82°63°32%
- Thu92°66°32%
- Fri91°71°39%
- Sat82°68°40%
- Sun87°65°43%
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 — Sylvan Hills
SPC has placed Sylvan Hills in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWSLGTSlight 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 Sylvan Hills
- 16648