Keystone, West Virginia Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Keystone weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain46%0.69″92°71°—
- SundayJul 5Overcast38%—88°71°-4°
- MondayJul 6Heavy Drizzle75%—88°69°0°
- TuesdayJul 7Light Drizzle41%—89°66°+1°
- WednesdayJul 8Light Drizzle27%—91°69°+2°
- ThursdayJul 9Light Drizzle47%—88°66°-3°
- FridayJul 10Thunderstorm65%—84°67°-4°
AQI 69 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 16.5 µg/m³ (AQI 65) with a 0.85 fine-to-coarse ratio and 4 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
Ozone × UV × Sky
Ozone at AQI 41. Overcast through the UV peak window (cloud cover ~71%) — afternoon ozone should stay flat.
- Present
- AQI 41
- UV peak
- 6.4 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 17
PM × Wind × Precip
PM2.5 at 16.5 µg/m³ (AQI 65) with a 0.85 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.85
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:16 PM
- Moonset
- 10:33 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Keystone at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: March 31 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Keystone
- Sat92°71°46%
- Sun88°71°38%
- Mon88°69°75%
- Tue89°66°41%
- Wed91°69°27%
- Thu88°66°47%
- Fri84°67°65%
- Sat79°67°60%
- Sun75°66°38%
- Mon73°60°20%
- Tue86°59°20%
- Wed88°67°35%
- Thu92°66°32%
- Fri90°67°30%
- Sat72°68°43%
- Sun90°68°49%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, 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 — Keystone
SPC has placed Keystone in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
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.
ZIP codes in Keystone
- 24868