Clark, Pennsylvania Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
Clark weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——83°50°—
- FridayJun 5Overcast——85°59°+2°
- SaturdayJun 6Showers85%0.15″77°66°-8°
- SundayJun 7Drizzle47%—76°59°-1°
- MondayJun 8Overcast——80°55°+4°
- TuesdayJun 9Light Drizzle19%—77°63°-3°
- WednesdayJun 10Light Drizzle30%—73°65°-4°
PM2.5 at 8.8 µg/m³ (AQI 49) with a 0.92 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust. AQI up 40 in the last 6 hours — air quality is degrading.
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 47 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 11 by mid-afternoon.
- Present
- AQI 47
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 11
PM × Wind × Precip
PM2.5 at 8.8 µg/m³ (AQI 49) with a 0.92 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.92
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 4:25 AM
- Moonset
- 2:23 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Clark at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 24 (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 5, 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 — Clark
SPC has placed Clark in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3SLGTSlight Risk
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.