Humboldt, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Humboldt weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle44%—91°70°—
- SundayJul 5Overcast18%—83°70°-8°
- MondayJul 6Light Drizzle——83°68°0°
- TuesdayJul 7Overcast——81°63°-2°
- WednesdayJul 8Mostly Clear——84°63°+3°
- ThursdayJul 9Light Drizzle36%—86°71°+2°
- FridayJul 10Light Drizzle37%—80°68°-6°
AQI 30 (Good), driven by Ozone. Ozone at AQI 40 now. With UV 6.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 32 around 1 PM.
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 40 now. With UV 6.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 32 around 1 PM.
- Present
- AQI 40
- UV peak
- 6.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 32
PM × Wind × Precip
PM2.5 at 5.8 µg/m³, PM10 at 6.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- 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
- 10:47 PM
- Moonset
- 10:00 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Humboldt at a glance
- Today vs. normal: 13°F above the seasonal normal for this latitude
- Last frost: April 14 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61931
16-Day Forecast — Humboldt
- Sat91°70°44%
- Sun83°70°18%
- Mon83°68°9%
- Tue81°63°4%
- Wed84°63°8%
- Thu86°71°36%
- Fri80°68°37%
- Sat83°68°23%
- Sun73°58°6%
- Mon70°57°5%
- Tue77°60°12%
- Wed80°63°13%
- Thu82°66°19%
- Fri84°69°29%
- Sat86°71°29%
- Sun79°72°26%
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 — Humboldt
SPC has placed Humboldt 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 Humboldt
- 61931