Highwood, Illinois Weather
Solstice approaches — longest light. Day 88 of spring. Read this microseason across nine climate regions →
Highwood weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——76°51°—
- TuesdayJun 16Overcast76%—74°60°-2°
- WednesdayJun 17Showers88%0.58″71°58°-3°
- ThursdayJun 18Heavy Drizzle83%0.13″66°54°-5°
- FridayJun 19Light Drizzle10%0.02″67°53°+1°
- SaturdayJun 20Drizzle16%0.13″64°59°-3°
- SundayJun 21Light Drizzle29%0.02″65°59°+1°
AQI 23 (Good), driven by PM2.5. AQI down 9 over the last 6 hours (gradual decline). PM2.5 at 4.6 µg/m³ (AQI 26) with a 0.98 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.
What's driving it
PM × Wind × Precip
PM2.5 at 4.6 µg/m³ (AQI 26) with a 0.98 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.98
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:14 AM
- Moonset
- 8:47 PM
- In sign
- ♊︎ Gemini
Solstice approaches — longest light
Highwood at a glance
- Today vs. normal: 21°F below the seasonal normal for this latitude
- Last frost: April 29 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Highwood
- Mon76°51°2%
- Tue74°60°76%
- Wed71°58°88%
- Thu66°54°83%
- Fri67°53°10%
- Sat64°59°16%
- Sun65°59°29%
- Mon65°59°29%
- Tue69°60°9%
- Wed73°62°12%
- Thu74°62°17%
- Fri74°62°20%
- Sat87°68°27%
- Sun90°76°35%
- Mon80°71°32%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Highwood
SPC has placed Highwood in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- DAY 3SLGTSlight Risk
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 Highwood
- 60040