Marissa, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Marissa weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain32%1.0″95°74°—
- SundayJul 5Heavy Rain34%1.2″86°72°-9°
- MondayJul 6Overcast34%—88°70°+2°
- TuesdayJul 7Overcast——86°68°-2°
- WednesdayJul 8Overcast12%—90°67°+4°
- ThursdayJul 9Overcast25%—97°72°+7°
- FridayJul 10Drizzle40%—90°73°-7°
AQI 39 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 6.4 µg/m³, PM10 at 7.0 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 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 36 now. With UV 4.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 23 around 1 PM.
- Present
- AQI 36
- UV peak
- 4.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 23
PM × Wind × Precip
PM2.5 at 6.4 µg/m³, PM10 at 7.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.91
- 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
- 10:51 PM
- Moonset
- 10:07 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Marissa at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: April 6 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62257
16-Day Forecast — Marissa
- Sat95°74°32%
- Sun86°72°34%
- Mon88°70°34%
- Tue86°68°9%
- Wed90°67°12%
- Thu97°72°25%
- Fri90°73°40%
- Sat93°71°21%
- Sun80°64°15%
- Mon78°59°7%
- Tue79°61°9%
- Wed84°64°12%
- Thu82°66°14%
- Fri83°69°10%
- Sat87°70°13%
- Sun92°73°16%
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 — Marissa
SPC has placed Marissa 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 Marissa
- 62257