Keystone, Nebraska Weather
Prairie lightning bugs rise. Day 76 of spring. Read this microseason across nine climate regions →
Keystone weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——88°63°—
- ThursdayJun 4Light Drizzle16%0.02″85°62°-3°
- FridayJun 5Clear16%—87°61°+2°
- SaturdayJun 6Overcast——93°64°+6°
- SundayJun 7Overcast25%—92°66°-1°
- MondayJun 8Showers31%0.66″97°61°+5°
- TuesdayJun 9Overcast26%—96°63°-1°
Ozone at AQI 41. AQI flat over the last 6 hours (within ±4 points). Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
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 ~100%) — afternoon ozone should stay flat.
- Present
- AQI 41
- UV peak
- 8.5 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 23
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
- 4:44 AM
- Moonset
- 1:42 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
Keystone at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 23 (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.
SPC Convective Outlook
Storm Prediction Center — Keystone
SPC has placed Keystone 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.