Christiana, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Christiana weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast37%—99°78°—
- SundayJul 5Heavy Rain47%0.54″92°73°-7°
- MondayJul 6Drizzle93%0.01″79°70°-13°
- TuesdayJul 7Showers72%0.02″81°66°+2°
- WednesdayJul 8Light Drizzle17%0.02″73°62°-8°
- ThursdayJul 9Overcast18%—86°65°+13°
- FridayJul 10Light Drizzle47%—84°69°-2°
AQI 61 (Moderate), driven by Ozone. Ozone at AQI 106 now. With UV 8.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 120 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 106 now. With UV 8.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 120 around 1 PM.
- Present
- AQI 106
- UV peak
- 8.5 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 120
PM × Wind × Precip
PM2.5 at 7.8 µg/m³, PM10 at 8.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.93
- 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
- 10:57 PM
- Moonset
- 10:07 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Christiana at a glance
- Today vs. normal: 25°F above the seasonal normal for this latitude
- Last frost: April 16 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 17509
16-Day Forecast — Christiana
- Sat99°78°37%
- Sun92°73°47%
- Mon79°70°93%
- Tue81°66°72%
- Wed73°62°17%
- Thu86°65°18%
- Fri84°69°47%
- Sat84°67°27%
- Sun78°64°29%
- Mon76°66°26%
- Tue83°63°21%
- Wed85°61°29%
- Thu87°64°29%
- Fri85°69°29%
- Sat90°68°23%
- Sun85°71°27%
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 — Christiana
SPC has placed Christiana in the Enhanced Risk category for severe thunderstorms today.
- TODAYENHEnhanced Risk
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
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 Christiana
- 17509