Clarendon, Pennsylvania Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Clarendon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle29%—87°67°—
- SundayJul 5Rain34%0.18″82°67°-5°
- MondayJul 6Light Showers73%0.12″79°66°-3°
- TuesdayJul 7Drizzle56%0.01″71°65°-8°
- WednesdayJul 8Light Drizzle15%—82°63°+11°
- ThursdayJul 9Thunderstorm38%0.01″77°60°-5°
- FridayJul 10Drizzle61%0.02″74°61°-3°
AQI 43 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.5 µg/m³ (AQI 31) with a 0.96 fine-to-coarse ratio and 2 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 31. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 31
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5 at 5.5 µg/m³ (AQI 31) with a 0.96 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.96
- 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
- 11:35 PM
- Moonset
- 11:25 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Clarendon at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: April 27 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 16313
16-Day Forecast — Clarendon
- Sat87°67°29%
- Sun82°67°34%
- Mon79°66°73%
- Tue71°65°56%
- Wed82°63°15%
- Thu77°60°38%
- Fri74°61°61%
- Sat77°54°26%
- Sun76°50°18%
- Mon82°52°33%
- Tue82°56°21%
- Wed77°58°35%
- Thu80°52°36%
- Fri87°53°32%
- Sat87°65°52%
- Sun78°68°42%
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 — Clarendon
SPC has placed Clarendon in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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 Clarendon
- 16313