Hammond, Illinois Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Hammond weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers33%0.20″90°70°—
- SundayJul 5Overcast20%—83°69°-7°
- MondayJul 6Light Drizzle12%—83°67°0°
- TuesdayJul 7Overcast——81°62°-2°
- WednesdayJul 8Overcast12%—84°63°+3°
- ThursdayJul 9Light Drizzle33%—85°71°+1°
- FridayJul 10Light Drizzle31%0.01″79°68°-6°
AQI 30 (Good), driven by Ozone. AQI down 5 over the last 6 hours (gradual decline). Ozone at AQI 36 now. With UV 5.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 25 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 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 36 now. With UV 5.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 25 around 1 PM.
- Present
- AQI 36
- UV peak
- 5.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 25
PM × Wind × Precip
PM2.5 at 5.8 µg/m³ (AQI 32) with a 0.91 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.91
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:49 PM
- Moonset
- 10:01 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Hammond at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 61929
16-Day Forecast — Hammond
- Sat90°70°33%
- Sun83°69°20%
- Mon83°67°12%
- Tue81°62°5%
- Wed84°63°12%
- Thu85°71°33%
- Fri79°68°31%
- Sat83°67°28%
- Sun73°58°12%
- Mon70°57°8%
- Tue77°60°9%
- Wed80°63°20%
- Thu82°65°26%
- Fri82°70°32%
- Sat85°70°29%
- Sun81°72°32%
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 — Hammond
SPC has placed Hammond 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 Hammond
- 61929