- 74 @ Lincoln Road (Galesburg)SS0626
Beside a road/10.0 mi away/-/- ft from here
temp, pavement temp, wind, visibility, precip
Rio, Illinois
Village in Knox County, Illinois* WHAT...Clear skies and light winds will allow temperatures to drop to between 33 and 35 degrees tonight. This will result in frost formation. * WHERE...Portions of central and west central Illinois. * WHEN...From 1 AM to 9 AM CDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
44°
55°/43°
Mostly clear·
Feels like 39°·Gentle breeze 11 mph WNW
Alert. A Frost Advisory is in force for Rio until 9 AM tomorrow. Read the alert in full, and see what it means in the Field Book.
Now. Rio is 44° and mostly clear at 7 AM. With the wind it feels like 39°. The dew point is 42°, so the air feels dry and comfortable. Gentle breeze from the west-northwest at 11 mph.
Today and tonight. It warms to about 55° by 3 PM. Tonight falls to about 32° by 7 AM, under a mostly clear sky. A freeze: protect plants and pipes. No rain is expected for the rest of the day.
The week. The warmest day ahead is Thursday, near 75°, and the coolest tomorrow, near 58°. The days ahead look dry. The first freeze could come tomorrow, a low of 32°.
The sky tonight. The sun sets at 6:20 PM. The Moon is a waxing crescent, 33% lit, and sets at 10:12 PM. The next full Moon is Sunday, Oct 25. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 7 minutes long, 2 minutes shorter than yesterday.
0UV Low
19Air quality
92%Humidity
17%Cloud
Now
7:00 AM
44feels39
now, mostly clear
Today
Oct 16
5543
30%
18mph
Sat
Oct 17
5832
clear day
Sun
Oct 18
6536
clear day
Mon
Oct 19
6938
overcast
Tue
Oct 20
7243
overcast
Wed
Oct 21
7345
overcast
Thu
Oct 22
7550
overcast
44°
55°43°
58°32°
65°36°
69°38°
72°43°
73°45°
75°50°
As of 7:00 AM in Rio, Illinois.
Air quality
The air at Rio
Index 19, good, led by fine particles. Read at 7 AM from its reporting area, Rock Island-Moline (IL), 16 miles off.
19Good
- Fine particles (PM2.5)19Good-
- Ozone12Good-
The days ahead
Good each day through Mon Oct 19, led by fine particles. Yesterday measured 19, good.
GoodModerate
- 19YesterdayOct 15
- GoodTodayOct 16
- GoodSatOct 17
- GoodSunOct 18
- GoodMonOct 19
Smoke, the next 43 hours
No smoke near the ground through Sun 1 AM.
Precipitation
What has fallen at Rio
0.56 in in the last 24 hours, 1.05 in over the last 3 days, to Fri 6 AM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.56in
- Last 3 days
- 1.05in
3 days agoLast 24 hours 53%
Visibility
How far you can see at Rio, the next 43 hours
Visibility stays 8 miles or more through Sun 1 AM, lowest 8 miles Fri 12 PM.
F
Now, today, and the week
On the radar over Rio, IllinoisReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture
Weather instrument stations by state
What is measuring near here
The 6 instruments nearest Rio, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 5.6 miles away.
measured now4 instruments
Rank1,350of 1,393
Citizen station DW8259DW8259
In a volunteer observer's own ground/10.4 mi away/759 ft/22 ft below here
temp, humidity, wind, precip, pressure
GalesburgGBG
At an airfield/11.9 mi away/804 ft/23 ft above here
temp, wind, gust, visibility, precip, pressure
Mississippi River AT Rock Island LD15RCKI2
At a river or reservoir gauge/29.5 mi away/552 ft/229 ft below here
temp, wind, gust, humidity, pressure
measured daily2 instruments
Wataga 5.4 WIL-KX-25
In a volunteer observer's own ground/5.6 mi away/808 ft/27 ft above here
precip, snowfall, snow depth
Alexis WaterworksALXI2
At a cooperative observer's station/9.6 mi away/674 ft/107 ft below here
snowfall, snow depth, precip, high, low
Station report
The weather at Galesburg, drawn
The nearest airport reporting now, 11.9 mi from Rio, Illinois. From its report of Oct 16, 2026, 6:55 AM local time: 3 of its 6 sheets.
The sky
No cloud below 12,000 ft; visibility 10 mi or more.
The air
44.4 F with a dew point of 42.4 F, 93 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 500 ft up.
The wind
From the west (280 degrees) at 12 mph, gusting 17 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 25 mph.
The full report of Galesburg, in 6 sheets, each beside the Field Book plates that explain it
What the snow tracker reads here
Every instrument in this state
0in
Snow on the ground
Measured at Mississippi River AT Rock Island LD15 (RCKI2), 29.5 miles from here, read 15 Oct, 23:59. measured daily
Elsewhere in Illinois
23 places, each with its own forecast and its own instruments.
AuroracityBloomingtoncityCarbondalecityChampaigncityChicagocityDanvillecityDecaturcityElgincityGalenatownIllinois RiverfeatureJolietcityLake ShelbyvillefeatureMolinecityMount VernoncityNapervillecityPeoriacityQuincycityRockfordcityShawnee National ForestfeatureSpringfieldcityStarved RockfeatureVilla Oliviaski areaWaukegancity
Near Rio
The nearest places, each with its own forecast and the instruments nearest it.