Fayetteville, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Fayetteville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 3Overcast19%—95°76°—
- SaturdayJul 4Heavy Rain27%0.43″91°72°-4°
- SundayJul 5Showers44%0.68″89°69°-2°
- MondayJul 6T-storm w/ Hail36%—89°69°0°
- TuesdayJul 7Overcast——84°69°-5°
- WednesdayJul 8Light Drizzle16%—90°69°+6°
- ThursdayJul 9Light Drizzle31%—89°72°-1°
AQI 84 (Moderate), driven by Ozone. AQI up 44 in the last 6 hours — air quality is degrading. Ozone at AQI 78 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 78 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 78
- UV peak
- 2.2 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 78
PM × Wind × Precip
PM2.5 at 6.1 µg/m³, PM10 at 7.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.87
- 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
- 10:25 PM
- Moonset
- 9:03 AM
- In sign
- ♒︎ Aquarius
Cicadas claim the scorching afternoon
Fayetteville at a glance
- Today vs. normal: 22°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.
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 — Fayetteville
SPC has placed Fayetteville in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- 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 Fayetteville
- 62258