Jonestown, Pennsylvania Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Jonestown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Heavy Rain72%1.1″89°71°—
- MondayJul 6Drizzle45%0.07″79°70°-10°
- TuesdayJul 7Drizzle50%0.01″69°62°-10°
- WednesdayJul 8Overcast35%—75°63°+6°
- ThursdayJul 9Light Drizzle43%—89°67°+14°
- FridayJul 10Light Drizzle51%0.02″75°68°-14°
- SaturdayJul 11Overcast33%—80°64°+5°
AQI 77 (Moderate), driven by Ozone. AQI up 48 in the last 6 hours — air quality is degrading. Ozone at AQI 98 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 98 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 98
- UV peak
- 2.3 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 98
PM × Wind × Precip
PM2.5 at 10.5 µg/m³, PM10 at 11.2 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.94
- Wind
- light
- Recent rain
- 1h in last 6h
- Pattern
- background
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
- 11:23 PM
- Moonset
- 11:15 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Jonestown at a glance
- Today vs. normal: 18°F above the seasonal normal for this latitude
- Last frost: April 18 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 17038
16-Day Forecast — Jonestown
- Sun90°71°72%
- Mon79°70°45%
- Tue69°62°50%
- Wed75°63°35%
- Thu89°67°43%
- Fri75°68°51%
- Sat80°64°33%
- Sun68°63°16%
- Mon84°64°20%
- Tue67°59°14%
- Wed72°62°16%
- Thu81°59°30%
- Fri84°61°27%
- Sat82°63°32%
- Sun80°64°29%
- Mon69°65°29%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Jonestown
SPC has placed Jonestown in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe 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.
ZIP codes in Jonestown
- 17038