West Mifflin, Pennsylvania Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
West Mifflin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Drizzle43%0.03″84°68°—
- MondayJul 6Drizzle85%0.02″87°69°+3°
- TuesdayJul 7Light Showers59%—75°66°-12°
- WednesdayJul 8Drizzle22%—85°68°+10°
- ThursdayJul 9Drizzle44%0.06″85°64°0°
- FridayJul 10Drizzle75%—75°67°-10°
- SaturdayJul 11Light Drizzle45%—81°63°+6°
AQI 46 (Good), driven by PM2.5. AQI down 59 over the last 6 hours — air quality is improving sharply. PM2.5 at 9.7 µg/m³ (AQI 52) with a 0.98 fine-to-coarse ratio and 6 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.
What's driving it
PM × Wind × Precip
PM2.5 at 9.7 µg/m³ (AQI 52) with a 0.98 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.98
- Wind
- light
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:37 PM
- Moonset
- 11:29 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
West Mifflin at a glance
- Today vs. normal: 71°F — typical for the season
- Last frost: April 18 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 15122
15-Day Forecast — West Mifflin
- Sun84°68°43%
- Mon87°69°85%
- Tue75°66°59%
- Wed85°68°22%
- Thu85°64°44%
- Fri75°67°75%
- Sat81°63°45%
- Sun80°57°28%
- Mon82°56°15%
- Tue82°61°15%
- Wed83°64°32%
- Thu81°57°23%
- Fri89°61°39%
- Sat88°67°43%
- Sun75°66°35%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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 — West Mifflin
SPC has placed West Mifflin in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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 West Mifflin
- 15122
- 15123