Aug
17.
An Upper Level High Pressure Ridge takes over bringing sunshine and warmer temperatures. The graphics for days 1-3 show a cold frontal system sliding off to the east, and another one offshore Tuesday. The graphics for days 3-7 Thursday through Monday show no frontal activity moving toward the coast or through the Pacific Northwest through the period until a cold front slides in next Monday.
ADVISORIES:
- NONE AT THIS TIME.
HEALTH ADVISORIES:
- A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER BAR. POOLS IN THE BEDROCK ALONG THE RIVERS EDGE ARE KNOWN TO DEVELOP BLUE-GREEN ALGAE (CYANOBACTERIAL) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED ALONG SEVERAL ACCESS AREAS ALONG THE RIVER.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 19 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 16 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 18 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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Eugene-Springfield Area Pollen count:
GRASS: 2 LOW
TREES: 0 ABSENT
WEEDS: 0 ABSENT
Measured 8.14.25
Data courtesy of Oregon Allergy Associates.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- AM clouds and sun, sunny and a bit warmer this afternoon, mostly clear tonight,
- Sunny and a bit warmer Tuesday, mostly clear at night,
- Sunny and a bit warmer Wednesday, then clear Wednesday night,
- highs 79-85 lows 52-54.
- Sunny and warmer Thursday, clear Thursday night,
- Sunny and a bit warmer Friday, clear at night,
- Then sunny and a bit cooler Saturday and Sunday, clear Saturday night.
- highs 89-93 cooling to 91 Sunday lows 56-57. (seasonal averages high 84 low 51).
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Forecast for the Umpqua Valley including Roseburg:
- Some AM clouds, sunny and a bit warmer this afternoon, clear tonight,
- Sunny and a bit warmer Tuesday, clear at night,
- Sunny and a bit warmer Wednesday, then clear Wednesday night.
- highs 83-85 lows 56-58.
- Sunny and a bit warmer Thursday and Friday, clear both nights,
- Sunny and a bit warmer Saturday, clear Saturday night,
- Then sunny and a bit cooler Sunday.
- highs near 87-93 lows 59-60. (seasonal averages high 86 low 57).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Some AM clouds with patchy coastal fog, sunny and a bit cooler this afternoon, mostly clear tonight,
- Mostly sunny and a bit warmer Tuesday, mostly clear in the evening, partly cloudy late at night,
- Mostly sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
- highs 73-74 lows 53-56 cooling to 54 Wednesday night.
- Mostly sunny Thursday, mostly clear Thursday night,
- Mostly sunny and a bit cooler Friday, mostly clear at night,
- Mostly sunny Saturday, partly cloudy Saturday night,
- Then partly cloudy Sunday.
- highs 73-75 cooling to 74 Friday and Saturday lows near 54.
- (seasonal averages high 67 low 54). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- AM clouds and sun, sunny and a bit warmer this afternoon, mostly clear tonight,
- Sunny and a bit warmer Tuesday, mostly clear at night,
- Sunny and a bit cooler Wednesday, then clear Wednesday night.
- free air freezing level 14,000 ft. tonight, 14,000 ft. Tuesday, 13,000 ft. Tuesday night and Wednesday, then 14,000 ft. Wednesday.
- highs 70-74 cooling to 73 Wednesday lows 45-47.
- Sunny and warmer Thursday, clear Thursday night,
- Sunny and a bit warmer Friday, mostly clear at night,
- Then sunny and a bit cooler Saturday and Sunday, mostly clear Saturday night.
- free air freezing level 13,000 ft. Wednesday, 15,000 ft. Wednesday night and Thursday, then 16,000 ft. Thursday through Saturday night, then 15,000 ft. Sunday.
- 82-87 cooling to 83 Sunday lows 53-56 cooling to 54 Sunday.
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