An Upper Level High Pressure Ridge (“Arch” shape) brings sunshine and warming temperatures. The graphics for days 1-3 show a weak cold front to our north Thursday. The graphics for days 3-7 Friday through Tuesday show a weak cold front sliding in and falling apart Saturday.
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ADVISORIES:
- A FIRE WEATHER WATCH IS IN EFFECT FROM THIS AFTERNOON THROUGH THIS EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR THE SOUTHERN OREGON CASCADES, THE KLAMATH BASIN AND THE FREMONT-WINEMA NATIONAL FOREST, AND THE SOUTH CENTRAL OREGON DESERT INCLUDING THE BLM LAND IN EASTERN LAKE AND WESTERN HARNEY COUNTIES.
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 42 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 22 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 37 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: 14 MODERATE
TREES: 0 ABSENT
WEEDS: 0 ABSENT
Measured 7.22.25
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:
- Sunny and a bit warmer today, mostly clear tonight,
- Then sunny and a bit cooler Thursday and Friday, mostly clear both nights,
- highs 92-84 lows 54-52.
- Sunny and a bit cooler Saturday, mostly clear Saturday night,
- Sunny and a bit warmer Sunday, mostly clear at night,
- Then sunny and a bit warmer Monday and Tuesday, clear Monday night,
- highs 84-90 lows 52-54. (seasonal averages high 86 low 52).
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Forecast for the Umpqua Valley including Roseburg:
- Sunny and a bit warmer today, clear tonight,
- Sunny and a bit cooler Thursday, mostly clear at night,
- Some AM clouds, sunny and a bit cooler Friday afternoon, then mostly clear Friday night.
- highs 83-85 lows 60-57.
- Mostly sunny Saturday, mostly clear Saturday night,
- Mostly sunny and a bit warmer Sunday and Monday, mostly clear both nights,
- Then mostly sunny Tuesday.
- highs 85-90 lows 56-59. (seasonal averages high 87 low 58).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- AM clouds, sunny and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy late tonight,
- AM clouds, sunny and a bit cooler Thursday, mostly clear in the evening, mostly cloudy at night,
- Then partly cloudy Friday and Friday night.
- highs 70-69 lows 54-52.
- Partly cloudy Saturday and Saturday night,
- Mostly sunny and a bit warmer Sunday and Monday, mostly clear both nights,
- Some AM clouds, then sunny and a bit cooler Tuesday afternoon.
- highs 69-71 lows 52-53 cooling back to 52 Sunday night.
- (seasonal averages high 67 low 54). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Sunny and a bit warmer with areas of smoke this afternoon, mostly clear tonight,
- Sunny Thursday, mostly clear at night,
- Sunny and a bit cooler Friday, then mostly clear Friday night.
- free air freezing level 14,000 ft. today, 14,000 ft. tonight and Thursday, then 14,00 ft. Friday and Friday night.
- lows 49-52 cooling to 47 Friday night highs 78-75.
- Sunny and a bit cooler Saturday, mostly clear Saturday night,
- Sunny and a bit warmer Sunday and Monday, mostly clear both nights,
- Then sunny Tuesday.
- free air freezing level 13,000 ft. Saturday through Sunday night, 14,000 ft. Monday and Monday night, then 15,000 ft. Tuesday.
- highs 73-80 lows 47-52.
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