Citizen station EW4319EW4319
In a volunteer observer's own ground/2.8 mi away/567 ft/153 ft above here
temp, humidity, wind, precip, pressure
Cahokia Mounds State Historic Site, Illinois
State Historic Site in St. Clair County, Illinois73°
81°/66°
Mostly clear·
Feels like 73°·Gentle breeze 9 mph W
Coming up. Tomorrow is 23 degrees cooler: a high of 58° after 81° today.
Now. Cahokia Mounds State Historic Site is 73° and mostly clear at 8 PM. The dew point is 67°, so the air feels oppressive. Gentle breeze from the west at 9 mph.
Today and tonight. Tonight falls to about 48° by 8 AM, with some cloud.
The week. The warmest day ahead is Wednesday, near 78°, and the coolest tomorrow, near 58°. The days ahead look dry. Frost is possible Sunday morning, a low of 36°.
The sky now. The Moon is a waxing crescent, 25% lit, and sets at 9:26 PM. The next full Moon is Sunday, Oct 25. 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 day is 11 hours 14 minutes long, 2 minutes shorter than yesterday.
0UV Low
22Air quality
76%Humidity
34%Cloud
Now
8:00 PM
73feels73
now, mostly clear
Today
Oct 15
8166
94%
14mph
Fri
Oct 16
5846
12%
18mph
Sat
Oct 17
6038
UV 6
Sun
Oct 18
6636
UV 6
Mon
Oct 19
7138
overcast
Tue
Oct 20
7542
overcast
Wed
Oct 21
7845
overcast
73°
81°66°
58°46°
60°38°
66°36°
71°38°
75°42°
78°45°
As of 8:00 PM in Cahokia Mounds State Historic Site, Illinois.
Air quality
The air at Cahokia Mounds State Historic Site
Index 22, good, led by ozone. Read at 8 PM from its reporting area, St. Louis (Metro-east) (IL), 7 miles off.
22Good
- Fine particles (PM2.5)21Good5.7 mi
- Ozone22Good21 ppb6.8 mi
- Coarse particles (PM10)7Good5.7 mi
- Nitrogen dioxide3Good3.2 ppb8 mi
- Sulfur dioxide0Good0.9 ppb8 mi
- Carbon monoxide-0.1 ppm8 mi
The days ahead
Highest moderate, today, led by fine particles. Yesterday measured 39, good.
GoodModerate
- 39YesterdayOct 14
- ModerateTodayOct 15
- GoodFriOct 16
- GoodSatOct 17
- GoodSunOct 18
- GoodMonOct 19
Smoke, the next 42 hours
No smoke near the ground through Sat 1 PM.
Precipitation
What has fallen at Cahokia Mounds State Historic Site
0.65 in in the last 24 hours, 1.90 in over the last 3 days, to Thu 7 PM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.65in
- Last 3 days
- 1.90in
3 days agoLast 24 hours 34%
Visibility
How far you can see at Cahokia Mounds State Historic Site, the next 42 hours
Visibility stays 6 miles or more through Sat 1 PM, lowest 6 miles Fri 12 AM.
F
Now, today, and the week
Weather instrument stations by state
Park
- Designation
- State Historic Site
- Area
- 2.56 sq mi
- Height at its point
- 414 ft
- County
- St. Clair County
- State
- Illinois
- Latitude
- 38.6576° N
- Longitude
- 90.0523° W
What is measuring near here
The 6 instruments nearest Cahokia Mounds State Historic Site, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.8 miles away.
measured now4 instruments
- 55/64/70 @ Poplar St. BridgeSS0234
Beside a road/7.3 mi away/-/- ft from here
temp, pavement temp, wind, visibility, precip
At an airfield/8.2 mi away/413 ft/1 ft below here
temp, wind, gust, visibility, precip, pressure
Rain Gage At Scott Air Force Base383209089513901
On a military installation/13.3 mi away/-/- ft from here
temp, wind, gust, humidity, pressure
measured daily2 instruments
Fairmont City 0.9 ENEIL-SC-18
In a volunteer observer's own ground/1.8 mi away/420 ft/6 ft above here
precip, snowfall, snow depth
Southern Illinois UniversitySIUI2
On a college campus/15.4 mi away/456 ft/42 ft above here
snowfall, snow depth, precip, high, low
What the snow tracker reads here
Every instrument in this state
-
Snow on the ground
Elsewhere in Illinois
23 places, each with its own forecast and its own instruments.
AuroracityBloomingtoncityCarbondalecityChampaigncityChicagocityDanvillecityDecaturcityElgincityGalenatownIllinois RiverfeatureJolietcityLake ShelbyvillefeatureMolinecityMount VernoncityNapervillecityPeoriacityQuincycityRockfordcityShawnee National ForestfeatureSpringfieldcityStarved RockfeatureVilla Oliviaski areaWaukegancity
Near Cahokia Mounds State Historic Site
The nearest places, each with its own forecast and the instruments nearest it.
- Caseyvillevillage, 2 mi
- Fairmont Cityvillage, 3 mi
- Washington Parkvillage, 3 mi
- Collinsvillecity, 4 mi
- East St. Louiscity, 5 mi
- Pontoon Beachvillage, 5 mi
- Granite Citycity, 6 mi
- Madisoncity, 6 mi
- Fairview Heightscity, 6 mi
- Brooklynvillage, 6 mi
- Venicecity, 6 mi
- Maryvillevillage, 7 mi