Mark, Illinois Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Mark weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle79%0.04″85°70°—
- SundayJul 5Foggy20%—82°67°-3°
- MondayJul 6Partly Cloudy——81°62°-1°
- TuesdayJul 7Overcast——79°58°-2°
- WednesdayJul 8Overcast22%—82°62°+3°
- ThursdayJul 9Thunderstorm36%0.02″80°66°-2°
- FridayJul 10Overcast32%—78°63°-2°
AQI 27 (Good), driven by PM2.5. AQI down 7 over the last 6 hours (gradual decline). PM2.5 at 5.7 µg/m³, PM10 at 6.4 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 during the projected peak around 8 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 5.7 µg/m³, PM10 at 6.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.89
- 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
- 10:53 PM
- Moonset
- 10:02 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Mark at a glance
- Today vs. normal: 4°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: 61340
16-Day Forecast — Mark
- Sat86°70°79%
- Sun82°67°20%
- Mon81°62°5%
- Tue79°58°3%
- Wed82°62°22%
- Thu80°66°36%
- Fri78°63°32%
- Sat82°64°17%
- Sun68°58°8%
- Mon72°56°8%
- Tue76°60°13%
- Wed79°62°29%
- Thu82°64°18%
- Fri81°68°29%
- Sat85°69°23%
- Sun83°71°39%
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 — Mark
SPC has placed Mark in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe 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.
ZIP codes in Mark
- 61327
- 61326
- 61340