Vermilion, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Vermilion weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain38%0.35″90°72°—
- SundayJul 5Overcast18%—85°71°-5°
- MondayJul 6Partly Cloudy14%—84°68°-1°
- TuesdayJul 7Light Drizzle——83°64°-1°
- WednesdayJul 8Clear——84°63°+1°
- ThursdayJul 9Thunderstorm38%—85°69°+1°
- FridayJul 10Light Drizzle42%—80°68°-5°
AQI 32 (Good), driven by PM2.5. AQI down 10 over the last 6 hours (gradual decline). PM2.5 at 8.4 µg/m³ (AQI 47) with a 0.90 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 46 now. With UV 6.1 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 26 around 1 PM.
- Present
- AQI 46
- UV peak
- 6.1 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 26
PM × Wind × Precip
PM2.5 at 8.4 µg/m³ (AQI 47) with a 0.90 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.90
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 10:44 PM
- Moonset
- 9:57 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Vermilion at a glance
- Today vs. normal: 10°F above the seasonal normal for this latitude
- Last frost: April 13 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61955
16-Day Forecast — Vermilion
- Sat90°72°38%
- Sun85°71°18%
- Mon84°68°14%
- Tue83°64°5%
- Wed84°63°5%
- Thu85°69°38%
- Fri80°68°42%
- Sat84°68°26%
- Sun74°59°8%
- Mon71°56°7%
- Tue77°59°14%
- Wed81°62°23%
- Thu83°65°23%
- Fri83°69°29%
- Sat86°70°29%
- Sun82°72°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 — Vermilion
SPC has placed Vermilion 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 Vermilion
- 61944
- 61955