Newcastle, Nebraska Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Newcastle weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Foggy15%—87°71°—
- SundayJul 5Overcast12%—89°69°+2°
- MondayJul 6Overcast——91°71°+2°
- TuesdayJul 7Overcast15%—94°71°+3°
- WednesdayJul 8Showers50%—90°69°-4°
- ThursdayJul 9Light Showers50%0.15″86°64°-4°
- FridayJul 10Overcast10%—83°63°-3°
AQI 49 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 8.6 µg/m³ (AQI 48) with a 0.77 fine-to-coarse ratio and 5 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 48 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 48
- UV peak
- 6.1 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 48
PM × Wind × Precip
PM2.5 at 8.6 µg/m³ (AQI 48) with a 0.77 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.77
- 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
- 11:27 PM
- Moonset
- 10:31 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Newcastle at a glance
- Today vs. normal: 17°F above the seasonal normal for this latitude
- Last frost: May 2 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 68757
16-Day Forecast — Newcastle
- Sat87°71°15%
- Sun89°69°12%
- Mon91°71°2%
- Tue94°71°15%
- Wed90°69°50%
- Thu86°64°50%
- Fri83°63°10%
- Sat83°58°10%
- Sun82°64°6%
- Mon87°62°7%
- Tue87°65°6%
- Wed92°67°14%
- Thu97°67°16%
- Fri91°64°23%
- Sat82°60°10%
- Sun87°58°10%
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 — Newcastle
SPC has placed Newcastle in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
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 Newcastle
- 68757