Jennerstown, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Jennerstown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Rain33%0.11″91°65°—
- SundayJul 5Heavy Showers81%0.37″85°68°-6°
- MondayJul 6T-storm w/ Hail83%0.07″76°65°-9°
- TuesdayJul 7Drizzle41%—77°61°+1°
- WednesdayJul 8Light Drizzle18%—79°57°+2°
- ThursdayJul 9Overcast49%—82°63°+3°
- FridayJul 10Light Drizzle52%—76°65°-6°
AQI 58 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 14.7 µg/m³ (AQI 61) with a 0.93 fine-to-coarse ratio and 5 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 34 now. With UV 3.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 17 around 1 PM.
- Present
- AQI 34
- UV peak
- 3.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 17
PM × Wind × Precip
PM2.5 at 14.7 µg/m³ (AQI 61) with a 0.93 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.93
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:10 PM
- Moonset
- 10:19 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Jennerstown at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: April 17 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 15547
16-Day Forecast — Jennerstown
- Sat91°65°33%
- Sun85°68°81%
- Mon76°65°83%
- Tue77°61°41%
- Wed79°57°18%
- Thu82°63°49%
- Fri76°65°52%
- Sat80°66°44%
- Sun75°63°31%
- Mon69°61°20%
- Tue70°58°20%
- Wed79°63°29%
- Thu87°67°35%
- Fri86°69°46%
- Sat79°66°43%
- Sun81°66°44%
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 — Jennerstown
SPC has placed Jennerstown 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 Jennerstown
- 15531
- 15563
- 15547