Klahr, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Klahr weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Drizzle26%0.11″93°72°—
- SundayJul 5Rain87%0.52″84°70°-9°
- MondayJul 6Thunderstorm88%0.31″75°65°-9°
- TuesdayJul 7Light Drizzle56%—72°60°-3°
- WednesdayJul 8Overcast18%—79°56°+7°
- ThursdayJul 9Overcast43%—86°61°+7°
- FridayJul 10Drizzle36%—81°65°-5°
AQI 57 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.1 µg/m³, PM10 at 11.7 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.
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, PM10 at 11.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.95
- 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
- 11:08 PM
- Moonset
- 10:17 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Klahr at a glance
- Today vs. normal: 9°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.
16-Day Forecast — Klahr
- Sat93°72°26%
- Sun84°70°87%
- Mon75°65°88%
- Tue72°60°56%
- Wed79°56°18%
- Thu86°61°43%
- Fri81°65°36%
- Sat83°66°36%
- Sun75°62°26%
- Mon73°60°19%
- Tue70°59°14%
- Wed78°62°32%
- Thu88°65°32%
- Fri89°70°39%
- Sat78°67°40%
- Sun84°64°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 — Klahr
SPC has placed Klahr 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 Klahr
- 16625