Altona, Illinois Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Altona weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Foggy——84°68°—
- MondayJul 6Mostly Clear——85°66°+1°
- TuesdayJul 7Overcast——82°62°-3°
- WednesdayJul 8Overcast——83°65°+1°
- ThursdayJul 9T-storm w/ Hail43%1.0″83°67°0°
- FridayJul 10Showers43%0.01″77°68°-6°
- SaturdayJul 11Light Drizzle21%—82°67°+5°
AQI 22 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 8.2 µg/m³, PM10 at 8.9 µg/m³ — typical background levels with no transport signature.
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 33 now. With UV 7.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 33 around 1 PM.
- Present
- AQI 33
- UV peak
- 7.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 33
PM × Wind × Precip
PM2.5 at 8.2 µg/m³, PM10 at 8.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.92
- 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
- 11:19 PM
- Moonset
- 11:12 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Altona at a glance
- Today vs. normal: 10°F above the seasonal normal for this latitude
- Last frost: April 23 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61414
16-Day Forecast — Altona
- Sun84°68°7%
- Mon85°66°2%
- Tue82°62°1%
- Wed83°65°5%
- Thu83°67°43%
- Fri77°68°43%
- Sat82°67°21%
- Sun85°69°10%
- Mon89°70°6%
- Tue87°75°4%
- Wed75°61°8%
- Thu76°56°29%
- Fri81°62°23%
- Sat84°67°32%
- Sun86°72°29%
- Mon88°72°21%
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 — Altona
SPC includes Altona in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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 Altona
- 61414