Macomb, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Macomb weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain30%0.46″88°71°—
- SundayJul 5Overcast31%—81°71°-7°
- MondayJul 6Light Drizzle——83°65°+2°
- TuesdayJul 7Clear——81°62°-2°
- WednesdayJul 8Overcast11%—86°64°+5°
- ThursdayJul 9Drizzle32%—84°72°-2°
- FridayJul 10Light Drizzle32%—82°68°-2°
AQI 28 (Good), driven by PM2.5. AQI down 11 over the last 6 hours (gradual decline). PM2.5 at 7.0 µg/m³, PM10 at 8.1 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 7 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 7.0 µg/m³, PM10 at 8.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.86
- Wind
- light
- Recent rain
- 1h 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
- 10:57 PM
- Moonset
- 10:08 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Macomb at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: April 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61455
16-Day Forecast — Macomb
- Sat88°71°30%
- Sun81°71°31%
- Mon83°65°8%
- Tue81°62°6%
- Wed86°64°11%
- Thu84°72°32%
- Fri82°68°32%
- Sat84°68°20%
- Sun71°59°9%
- Mon75°57°6%
- Tue76°61°7%
- Wed81°64°16%
- Thu82°65°14%
- Fri81°68°26%
- Sat86°69°13%
- Sun85°72°20%
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 — Macomb
SPC has placed Macomb 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 Macomb
- 61455