Marseilles, Illinois Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Marseilles weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers77%0.63″84°71°—
- SundayJul 5Overcast15%—81°68°-3°
- MondayJul 6Partly Cloudy——81°65°0°
- TuesdayJul 7Overcast——81°59°0°
- WednesdayJul 8Overcast23%—81°64°0°
- ThursdayJul 9Thunderstorm34%0.07″81°67°0°
- FridayJul 10Overcast27%—79°63°-2°
AQI 28 (Good), driven by PM2.5. AQI down 7 over the last 6 hours (gradual decline). PM2.5 at 6.1 µg/m³ (AQI 34) with a 0.90 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
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
PM × Wind × Precip
PM2.5 at 6.1 µg/m³ (AQI 34) with a 0.90 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.90
- Wind
- calm
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:51 PM
- Moonset
- 9:59 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Marseilles at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: April 24 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61341
16-Day Forecast — Marseilles
- Sat84°71°77%
- Sun81°68°15%
- Mon81°65°4%
- Tue81°59°4%
- Wed81°64°23%
- Thu81°67°34%
- Fri79°63°27%
- Sat82°65°14%
- Sun69°59°7%
- Mon73°56°11%
- Tue78°60°13%
- Wed79°62°26%
- Thu82°65°21%
- Fri82°70°29%
- Sat86°70°23%
- Sun82°72°31%
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 — Marseilles
SPC has placed Marseilles in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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.
ZIP codes in Marseilles
- 61341