Chapman, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Chapman weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast33%—97°71°—
- SundayJul 5Heavy Showers93%1.1″90°70°-7°
- MondayJul 6Showers93%0.41″72°61°-18°
- TuesdayJul 7Light Drizzle67%0.04″68°55°-4°
- WednesdayJul 8Mostly Clear13%—81°53°+13°
- ThursdayJul 9Light Drizzle36%—86°59°+5°
- FridayJul 10Light Drizzle43%—85°66°-1°
AQI 50 (Good), driven by PM2.5. AQI up 7 over the last 6 hours (gradual rise). PM2.5 at 8.8 µg/m³, PM10 at 9.4 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 41 now. With UV 4.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 26 around 1 PM.
- Present
- AQI 41
- UV peak
- 4.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 26
PM × Wind × Precip
PM2.5 at 8.8 µg/m³, PM10 at 9.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.94
- 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
- 10:56 PM
- Moonset
- 10:04 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Chapman at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: April 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Chapman
- Sat97°71°33%
- Sun90°70°93%
- Mon72°61°93%
- Tue68°55°67%
- Wed81°53°13%
- Thu86°59°36%
- Fri85°66°43%
- Sat81°68°26%
- Sun69°64°31%
- Mon68°63°16%
- Tue78°60°19%
- Wed85°62°29%
- Thu90°67°31%
- Fri91°69°45%
- Sat78°68°42%
- Sun84°65°38%
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 — Chapman
SPC has placed Chapman in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWMRGLMarginal 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 Chapman
- 18014