McKnightstown, Pennsylvania Weather
Fireflies rise from the lawn. Day 76 of spring. Read this microseason across nine climate regions →
McKnightstown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Clear——80°53°—
- ThursdayJun 4Overcast——84°58°+4°
- FridayJun 5Overcast——83°62°-1°
- SaturdayJun 6Overcast26%—86°65°+3°
- SundayJun 7Showers49%—77°64°-9°
- MondayJun 8Overcast12%—73°54°-4°
- TuesdayJun 9Partly Cloudy11%—76°50°+3°
Ozone at AQI 55 — peak already passed at 1 PM under clear skies. AQI up 17 in the last 6 hours — air quality is degrading. Levels should ease through evening.
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 55 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 55
- UV peak
- 2.1 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 55
PM × Wind × Precip
PM2.5 at 5.2 µg/m³, PM10 at 6.8 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.76
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 2:58 AM
- Moonset
- 12:06 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
McKnightstown at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 3, 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.