Jonestown, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Jonestown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Rain35%0.11″101°75°—
- SundayJul 5Heavy Rain95%2.4″92°72°-9°
- MondayJul 6Light Rain95%0.21″74°63°-18°
- TuesdayJul 7Light Drizzle65%0.01″72°59°-2°
- WednesdayJul 8Clear13%—82°56°+10°
- ThursdayJul 9Light Drizzle33%0.01″88°63°+6°
- FridayJul 10Light Drizzle36%—84°67°-4°
AQI 57 (Moderate), driven by PM2.5. AQI projected to climb to 74 over the next 6 hours. PM2.5 at 9.8 µg/m³, PM10 at 10.5 µg/m³ — typical background levels with no transport signature.
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 46 now. With UV 4.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 27 around 1 PM.
- Present
- AQI 46
- UV peak
- 4.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 27
PM × Wind × Precip
PM2.5 at 9.8 µg/m³, PM10 at 10.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.93
- Wind
- light
- Recent rain
- 0h 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
- 11:00 PM
- Moonset
- 10:09 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Jonestown at a glance
- Today vs. normal: 16°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
- Sat101°74°35%
- Sun92°72°95%
- Mon74°63°95%
- Tue72°59°65%
- Wed82°56°13%
- Thu88°63°33%
- Fri84°67°36%
- Sat84°70°32%
- Sun75°65°29%
- Mon71°64°18%
- Tue80°63°15%
- Wed85°65°29%
- Thu91°69°30%
- Fri93°73°36%
- Sat81°71°42%
- Sun85°67°34%
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 — Jonestown
SPC has placed Jonestown 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 Jonestown
- 17038