Rock, Michigan Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Rock weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Light Drizzle16%0.02″80°53°—
- FridayJun 5Rain79%0.17″82°60°+2°
- SaturdayJun 6Light Drizzle44%—70°53°-12°
- SundayJun 7Mostly Clear——76°46°+6°
- MondayJun 8Overcast——77°51°+1°
- TuesdayJun 9Light Drizzle21%0.06″64°56°-13°
- WednesdayJun 10Light Drizzle12%0.02″73°63°+9°
Ozone at AQI 500. AQI flat over the last 6 hours (within ±4 points). Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
AVOID OUTDOORS Avoid outdoor exertion. Keep windows closed; use HEPA filtration indoors if available.
What's driving it
Ozone × UV × Sky
Ozone at AQI 500. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 500
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 111
PM × Wind × Precip
PM2.5 at 6.9 µg/m³ (AQI 38) with a 0.92 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.92
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:40 AM
- Moonset
- 1:28 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Rock at a glance
- Today vs. normal: 12°F below the seasonal normal for this latitude
- Last frost: May 22 (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 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 — Rock
SPC has placed Rock 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.