Gretna, Nebraska Weather
Prairie lightning bugs rise. Day 76 of spring. Read this microseason across nine climate regions →
Gretna weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——84°61°—
- ThursdayJun 4Light Rain39%0.20″82°64°-2°
- FridayJun 5Thunderstorm67%0.03″90°67°+8°
- SaturdayJun 6Drizzle57%—84°66°-6°
- SundayJun 7Light Showers53%0.02″81°68°-3°
- MondayJun 8Light Drizzle33%—81°66°0°
- TuesdayJun 9Thunderstorm14%0.17″85°66°+4°
Ozone at AQI 65 now. AQI up 7 over the last 6 hours (gradual rise). With UV 8.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 72 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 65 now. With UV 8.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 72 by mid-afternoon.
- Present
- AQI 65
- UV peak
- 8.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 72
PM × Wind × Precip
PM2.5 at 8.4 µg/m³, PM10 at 9.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.87
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 4:22 AM
- Moonset
- 1:20 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
Gretna 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 — Gretna
SPC has placed Gretna in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- 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.