Ste. Marie, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Ste. Marie weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast25%—91°73°—
- SundayJul 5Showers22%0.23″86°73°-5°
- MondayJul 6Drizzle14%0.03″86°70°0°
- TuesdayJul 7Overcast11%—83°66°-3°
- WednesdayJul 8Clear——85°65°+2°
- ThursdayJul 9Thunderstorm31%—88°71°+3°
- FridayJul 10Light Showers38%0.29″83°71°-5°
AQI 37 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 47 now. With UV 4.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 27 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 47 now. With UV 4.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 27 around 1 PM.
- Present
- AQI 47
- UV peak
- 4.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 27
PM × Wind × Precip
PM2.5 at 7.2 µg/m³, PM10 at 7.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.94
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:45 PM
- Moonset
- 9:59 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Ste. Marie at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: April 10 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Ste. Marie
- Sat91°73°25%
- Sun86°73°22%
- Mon86°70°14%
- Tue83°66°11%
- Wed85°65°7%
- Thu88°71°31%
- Fri83°71°38%
- Sat85°71°28%
- Sun76°61°8%
- Mon70°58°6%
- Tue78°61°12%
- Wed81°63°16%
- Thu81°66°26%
- Fri80°71°29%
- Sat86°70°32%
- Sun83°73°30%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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 — Ste. Marie
SPC has placed Ste. Marie in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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.
ZIP codes in Ste. Marie
- 62459