Port Sanilac, Michigan Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
Port Sanilac weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Light Rain68%0.14″86°63°—
- SaturdayJun 6Drizzle71%—77°56°-9°
- SundayJun 7Foggy17%—57°51°-20°
- MondayJun 8Overcast——69°54°+12°
- TuesdayJun 9Drizzle30%—72°58°+3°
- WednesdayJun 10Foggy29%—70°61°-2°
- ThursdayJun 11Foggy16%—73°63°+3°
AQI 70 (Moderate), driven by PM2.5. AQI up 10 over the last 6 hours (gradual rise). PM2.5 at 13.4 µg/m³, PM10 at 14.4 µg/m³ — typical background levels with no transport signature.
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 43. Overcast through the UV peak window (cloud cover ~91%) — afternoon ozone should stay flat.
- Present
- AQI 43
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 10
PM × Wind × Precip
PM2.5 at 13.4 µg/m³, PM10 at 14.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.93
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 4:40 AM
- Moonset
- 2:27 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Port Sanilac at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: May 7 (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 — Port Sanilac
SPC has placed Port Sanilac in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.