University of Pittsburgh Johnstown, Pennsylvania Weather
Fireflies rise from the lawn. Day 76 of spring. Read this microseason across nine climate regions →
University of Pittsburgh Johnstown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Clear——72°46°—
- ThursdayJun 4Overcast——76°53°+4°
- FridayJun 5Overcast——77°55°+1°
- SaturdayJun 6Light Drizzle57%—79°59°+2°
- SundayJun 7Drizzle57%0.02″72°59°-7°
- MondayJun 8Light Drizzle13%0.01″69°54°-3°
- TuesdayJun 9Mostly Clear11%—75°47°+6°
Ozone at AQI 45 now. AQI up 8 over the last 6 hours (gradual rise). With UV 8.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 48 by mid-afternoon.
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 45 now. With UV 8.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 48 by mid-afternoon.
- Present
- AQI 45
- UV peak
- 8.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 48
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
- 3:06 AM
- Moonset
- 12:11 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
University of Pittsburgh Johnstown at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: April 18 (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.