Delta, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Delta weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast22%—100°78°—
- SundayJul 5Rain44%0.15″95°74°-5°
- MondayJul 6Showers86%0.03″79°70°-16°
- TuesdayJul 7Thunderstorm73%0.19″82°69°+3°
- WednesdayJul 8Light Rain18%0.07″73°64°-9°
- ThursdayJul 9Partly Cloudy17%—87°65°+14°
- FridayJul 10Light Drizzle47%—87°70°0°
AQI 69 (Moderate), driven by Ozone. AQI up 13 over the last 6 hours (gradual rise). Ozone at AQI 98 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
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 98 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 98
- UV peak
- 5.5 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 98
PM × Wind × Precip
PM2.5 at 9.0 µg/m³, PM10 at 9.6 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
- 10:58 PM
- Moonset
- 10:09 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Delta at a glance
- Today vs. normal: 28°F above the seasonal normal for this latitude
- Last frost: April 14 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 17314
16-Day Forecast — Delta
- Sat101°78°22%
- Sun95°74°44%
- Mon79°70°86%
- Tue82°69°73%
- Wed73°64°18%
- Thu87°65°17%
- Fri87°70°47%
- Sat88°68°31%
- Sun79°64°26%
- Mon75°66°24%
- Tue84°62°22%
- Wed87°62°37%
- Thu89°66°45%
- Fri86°70°46%
- Sat92°69°40%
- Sun87°70°46%
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 — Delta
SPC has placed Delta 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 Delta
- 17314