Cairnbrook, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Cairnbrook weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers66%0.24″87°64°—
- SundayJul 5Overcast45%—82°66°-5°
- MondayJul 6Drizzle89%0.03″75°64°-7°
- TuesdayJul 7Light Showers67%—76°62°+1°
- WednesdayJul 8Showers24%0.03″71°62°-5°
- ThursdayJul 9Light Drizzle17%—80°59°+9°
- FridayJul 10Light Drizzle61%0.04″76°65°-4°
AQI 83 (Moderate), driven by Ozone. AQI up 31 in the last 6 hours — air quality is degrading. Ozone at AQI 50. Overcast through the UV peak window (cloud cover ~76%) — afternoon ozone should stay flat.
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 50. Overcast through the UV peak window (cloud cover ~76%) — afternoon ozone should stay flat.
- Present
- AQI 50
- UV peak
- 0.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 6
PM × Wind × Precip
PM2.5 at 6.0 µg/m³, PM10 at 6.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.94
- Wind
- light
- Recent rain
- 1h 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
- 11:09 PM
- Moonset
- 10:19 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Cairnbrook at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: April 17 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 15924
16-Day Forecast — Cairnbrook
- Sat87°64°66%
- Sun82°66°45%
- Mon75°64°89%
- Tue76°62°67%
- Wed71°62°24%
- Thu80°59°17%
- Fri76°65°61%
- Sat74°61°42%
- Sun73°58°25%
- Mon70°56°26%
- Tue72°52°23%
- Wed76°55°42%
- Thu77°56°45%
- Fri74°59°50%
- Sat78°65°55%
- Sun74°65°52%
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 — Cairnbrook
SPC has placed Cairnbrook 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 Cairnbrook
- 15924