Newcastle, Utah Weather
The first anvil tops. Day 90 of spring. Read this microseason across nine climate regions →
Newcastle weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 17Mostly Clear——96°73°—
- ThursdayJun 18Overcast——92°67°-4°
- FridayJun 19Overcast——90°68°-2°
- SaturdayJun 20Clear——86°63°-4°
- SundayJun 21Clear——90°58°+4°
- MondayJun 22Clear——91°58°+1°
- TuesdayJun 23Clear——92°63°+1°
AQI 43 (Good), driven by Ozone. AQI down 6 over the last 6 hours (gradual decline). Ozone at AQI 39 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 17 around 1 PM.
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 39 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 17 around 1 PM.
- Present
- AQI 39
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 17
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 8:47 AM
- Moonset
- 11:07 PM
- In sign
- ♋︎ Cancer
The first anvil tops
Newcastle at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: April 2 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Newcastle
- Wed96°73°2%
- Thu92°67°2%
- Fri90°68°0%
- Sat86°63°0%
- Sun90°58°0%
- Mon91°58°0%
- Tue92°63°0%
- Wed93°66°1%
- Thu96°63°1%
- Fri99°59°1%
- Sat95°63°2%
- Sun99°62°3%
- Mon99°69°3%
- Tue97°67°0%
- Wed100°69°6%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 17, 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.
ZIP codes in Newcastle
- 84756