Blaine, Washington Weather
Rufous Hummingbirds Arrive. Day 78 of spring. Read this microseason across nine climate regions →
Blaine weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——67°52°—
- FridayJun 5Light Rain37%0.24″58°51°-9°
- SaturdayJun 6Rain51%0.29″57°48°-1°
- SundayJun 7Drizzle——63°47°+6°
- MondayJun 8Overcast37%—67°41°+4°
- TuesdayJun 9Overcast50%—70°45°+3°
- WednesdayJun 10Overcast26%—60°53°-10°
AQI 38 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM2.5/PM10 ratio 0.70 with 7 mph wind — characteristic of long-range haze transport rather than a local source.
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 32. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 32
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5/PM10 ratio 0.70 with 7 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.70
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- transport
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).
The higher the clouds, the finer the weather.
- Moonrise
- 7:42 AM
- Moonset
- 5:00 PM
- In sign
- ♒︎ Aquarius
Rufous Hummingbirds Arrive
Blaine at a glance
- Today vs. normal: 8°F below the seasonal normal for this latitude
- Last frost: June 9 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 5, 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 — Blaine
SPC has placed Blaine in the General Thunderstorms category for severe thunderstorms tomorrow.
- 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.