Knoxville, Illinois Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Knoxville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Rain55%0.08″84°69°—
- SundayJul 5Overcast11%—84°66°0°
- MondayJul 6Mostly Clear——87°64°+3°
- TuesdayJul 7Overcast——81°60°-6°
- WednesdayJul 8Light Showers——84°63°+3°
- ThursdayJul 9Thunderstorm38%0.08″82°66°-2°
- FridayJul 10Overcast38%—78°66°-4°
AQI 39 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.4 µg/m³ (AQI 30) with a 0.90 fine-to-coarse ratio and 5 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.
What's driving it
PM × Wind × Precip
PM2.5 at 5.4 µg/m³ (AQI 30) with a 0.90 fine-to-coarse ratio and 5 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
- 11:20 PM
- Moonset
- 11:13 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Knoxville at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: April 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61448
16-Day Forecast — Knoxville
- Sat84°69°55%
- Sun84°66°11%
- Mon87°64°6%
- Tue81°60°1%
- Wed84°63°9%
- Thu82°66°38%
- Fri78°66°38%
- Sat75°61°10%
- Sun77°55°10%
- Mon77°58°5%
- Tue82°61°5%
- Wed82°68°15%
- Thu84°69°19%
- Fri86°72°23%
- Sat88°75°13%
- Sun84°68°13%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Knoxville
SPC has placed Knoxville in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
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 Knoxville
- 61448