Chalfont, Pennsylvania Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Chalfont weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Drizzle57%0.05″86°72°—
- MondayJul 6Rain64%0.42″76°67°-10°
- TuesdayJul 7Overcast58%—70°64°-6°
- WednesdayJul 8Overcast32%—82°64°+12°
- ThursdayJul 9Heavy Drizzle28%—86°68°+4°
- FridayJul 10Overcast45%—86°70°0°
- SaturdayJul 11Overcast35%—84°68°-2°
AQI 77 (Moderate), driven by Ozone. AQI up 41 in the last 6 hours — air quality is degrading. Ozone at AQI 117 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
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 117 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 117
- UV peak
- 1.5 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 117
PM × Wind × Precip
PM2.5 at 14.3 µg/m³ (AQI 61) with a 0.95 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.95
- 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
- 11:18 PM
- Moonset
- 11:10 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Chalfont at a glance
- Today vs. normal: 15°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: 18914
16-Day Forecast — Chalfont
- Sun86°72°57%
- Mon76°67°64%
- Tue70°64°58%
- Wed82°64°32%
- Thu86°68°28%
- Fri86°70°45%
- Sat84°68°35%
- Sun79°66°17%
- Mon87°66°16%
- Tue71°64°12%
- Wed74°64°17%
- Thu76°62°29%
- Fri88°65°26%
- Sat87°67°23%
- Sun78°69°26%
- Mon68°66°26%
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 — Chalfont
SPC has placed Chalfont 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 Chalfont
- 18914