Scales Mound, Illinois Weather
Prairie lightning bugs rise. Day 78 of spring. Read this microseason across nine climate regions →
Scales Mound weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——87°55°—
- FridayJun 5Heavy Rain73%1.6″79°67°-8°
- SaturdayJun 6Light Drizzle21%—87°69°+8°
- SundayJun 7Showers31%—80°67°-7°
- MondayJun 8Light Showers72%0.04″75°67°-5°
- TuesdayJun 9Showers52%—83°67°+8°
- WednesdayJun 10Thunderstorm17%—87°70°+4°
AQI 62 (Moderate), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 46. Overcast through the UV peak window (cloud cover ~75%) — afternoon ozone should stay flat.
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 46. Overcast through the UV peak window (cloud cover ~75%) — afternoon ozone should stay flat.
- Present
- AQI 46
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 6
PM × Wind × Precip
PM2.5 at 5.4 µg/m³, PM10 at 6.2 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).
The higher the clouds, the finer the weather.
- Moonrise
- 5:08 AM
- Moonset
- 3:02 PM
- In sign
- ♒︎ Aquarius
Prairie lightning bugs rise
Scales Mound at a glance
- Today vs. normal: 75°F — typical for the season
- Last frost: May 1 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — Scales Mound
SPC has placed Scales Mound 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.