Coffeen, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Coffeen weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast26%—92°71°—
- SundayJul 5Showers25%0.21″83°72°-9°
- MondayJul 6Light Drizzle25%—85°69°+2°
- TuesdayJul 7Overcast——83°65°-2°
- WednesdayJul 8Overcast——86°65°+3°
- ThursdayJul 9Light Drizzle37%—87°71°+1°
- FridayJul 10Showers37%0.18″84°71°-3°
AQI 37 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 40 now. With UV 4.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 23 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 4.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 23 around 1 PM.
- Present
- AQI 40
- UV peak
- 4.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 23
PM × Wind × Precip
PM2.5 at 5.3 µg/m³, PM10 at 5.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.95
- 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
- 10:51 PM
- Moonset
- 10:05 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Coffeen at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: April 11 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 62017
16-Day Forecast — Coffeen
- Sat92°71°26%
- Sun83°72°25%
- Mon85°69°25%
- Tue83°65°6%
- Wed86°65°9%
- Thu87°71°37%
- Fri84°71°37%
- Sat86°71°24%
- Sun75°60°6%
- Mon73°58°6%
- Tue75°60°11%
- Wed81°63°9%
- Thu81°66°16%
- Fri82°68°23%
- Sat86°69°23%
- Sun84°72°16%
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 — Coffeen
SPC has placed Coffeen 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 Coffeen
- 62017