Union, Oregon Weather
Monsoon storms drench the south. Day 14 of summer. Read this microseason across nine climate regions →
Union weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Mostly Clear——87°55°—
- SundayJul 5Overcast——86°58°-1°
- MondayJul 6Overcast——89°63°+3°
- TuesdayJul 7Rain—0.17″94°62°+5°
- WednesdayJul 8Overcast——81°56°-13°
- ThursdayJul 9Clear——84°50°+3°
- FridayJul 10Clear——94°56°+10°
AQI 35 (Good), driven by Ozone. AQI up 12 over the last 6 hours (gradual rise). Ozone at AQI 46 now. With UV 9.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 55 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 46 now. With UV 9.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 55 around 1 PM.
- Present
- AQI 46
- UV peak
- 9.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 55
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
- 10:55 PM
- Moonset
- 9:57 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Union at a glance
- Today vs. normal: 21°F above the seasonal normal for this latitude
- Last frost: May 17 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 97883
16-Day Forecast — Union
- Sat87°55°1%
- Sun86°58°0%
- Mon89°63°2%
- Tue94°62°9%
- Wed81°56°4%
- Thu84°50°0%
- Fri94°56°0%
- Sat98°62°1%
- Sun99°66°2%
- Mon101°73°4%
- Tue101°72°7%
- Wed98°67°4%
- Thu106°66°13%
- Fri109°71°12%
- Sat113°77°6%
- Sun115°79°7%
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 — Union
SPC includes Union in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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 Union
- 97883