Princeton, Kentucky Weather
Sun climbs to its northern throne. Day 88 of spring. Read this microseason across nine climate regions →
Princeton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——75°57°—
- TuesdayJun 16Overcast13%—81°59°+6°
- WednesdayJun 17Thunderstorm17%—83°64°+2°
- ThursdayJun 18Drizzle77%0.11″78°66°-5°
- FridayJun 19Light Drizzle70%—77°61°-1°
- SaturdayJun 20Overcast——79°58°+2°
- SundayJun 21T-storm w/ Hvy Hail34%0.07″83°61°+4°
AQI 21 (Good), driven by PM2.5. AQI down 11 over the last 6 hours (gradual decline). PM2.5 at 6.9 µg/m³ (AQI 38) with a 0.95 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 7 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 6.9 µg/m³ (AQI 38) with a 0.95 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.95
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 5:36 AM
- Moonset
- 8:25 PM
- In sign
- ♋︎ Cancer
Sun climbs to its northern throne
Princeton at a glance
- Today vs. normal: 15°F below the seasonal normal for this latitude
- Last frost: March 30 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Princeton
- Mon75°57°1%
- Tue81°59°13%
- Wed83°64°17%
- Thu78°66°77%
- Fri77°61°70%
- Sat79°58°6%
- Sun83°61°34%
- Mon73°64°53%
- Tue77°60°39%
- Wed81°59°17%
- Thu83°65°14%
- Fri89°70°35%
- Sat91°71°30%
- Sun91°73°32%
- Mon92°72°24%
- Tue90°70°48%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Princeton
SPC has placed Princeton in the General Thunderstorms category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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 Princeton
- 42445