Chalfant, Pennsylvania Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Chalfant weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——85°52°—
- FridayJun 5Overcast——87°58°+2°
- SaturdayJun 6Drizzle82%—83°59°-4°
- SundayJun 7Light Showers82%—81°64°-2°
- MondayJun 8Clear——84°59°+3°
- TuesdayJun 9Overcast10%—84°64°0°
- WednesdayJun 10Overcast19%—84°60°0°
PM2.5 at 42.4 µg/m³ (AQI 118) with a 0.99 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust. AQI down 31 over the last 6 hours — air quality is improving sharply.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 42.4 µg/m³ (AQI 118) with a 0.99 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.99
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
NO₂ × Time of day
NO₂ at AQI 30 during overnight — within the expected overnight baseline, no source signature.
- Present
- AQI 30
- Phase
- overnight calm
- Pattern
- traffic typical
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:49 AM
- Moonset
- 1:18 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Chalfant at a glance
- Today vs. normal: 17°F below the seasonal normal for this latitude
- Last frost: April 18 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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.