Marcelline, Illinois Weather
Heat settles and the rain begins. Day 89 of spring. Read this microseason across nine climate regions →
Marcelline weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Light Drizzle20%—76°59°—
- WednesdayJun 17T-storm w/ Hail46%—88°59°+12°
- ThursdayJun 18Light Drizzle10%—71°59°-17°
- FridayJun 19Overcast——75°56°+4°
- SaturdayJun 20Light Drizzle10%—81°59°+6°
- SundayJun 21Showers73%0.57″73°62°-8°
- MondayJun 22Overcast62%—69°59°-4°
AQI 34 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 46 now. With UV 6.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 41 around 1 PM.
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 46 now. With UV 6.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 41 around 1 PM.
- Present
- AQI 46
- UV peak
- 6.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 41
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).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 6:49 AM
- Moonset
- 9:54 PM
- In sign
- ♋︎ Cancer
Heat settles and the rain begins
Marcelline at a glance
- Today vs. normal: 75°F — typical for the season
- Last frost: April 17 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Marcelline
- Tue76°59°20%
- Wed88°59°46%
- Thu71°59°10%
- Fri75°56°0%
- Sat81°59°10%
- Sun73°62°73%
- Mon69°59°62%
- Tue74°62°14%
- Wed81°64°11%
- Thu84°65°25%
- Fri86°71°26%
- Sat89°72°39%
- Sun90°72°39%
- Mon89°71°32%
- Tue91°73°29%
- Wed92°75°39%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 16, 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 — Marcelline
SPC has placed Marcelline in the Enhanced Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWENHEnhanced Risk
- DAY 3NONENo severe risk
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
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 Marcelline
- 62376