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, Illinois55°
80°/50°
Clear·
Feels like 55°·Calm 1 mph E
Coming up. Tomorrow is 8 degrees warmer: a high of 88° after 80° today.
Now. Cahokia Mounds State Historic Site is 55° and clear at 1 AM. The dew point is 47°, so the air feels dry and comfortable. The air is calm.
Today and tonight. It warms to about 79° by 3 PM. Tonight falls to about 57° by 7 AM, under a mostly clear sky. No rain is expected for the rest of the day. The sun is strong around midday: UV index 6, high. Unprotected skin can burn in under half an hour. Air quality is moderate (index 53): fine for most people, though people unusually sensitive to air pollution may feel it outdoors.
The week. The warmest day ahead is tomorrow, near 88°, and the coolest Thursday, near 82°. The days ahead look dry.
The sky tonight. The sun sets at 6:35 PM. The Moon is a waning crescent, 15% lit, and rises at 3:46 AM after midnight. The next new Moon is Saturday, Oct 10. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The sky is forecast to stay clear: a good night to look up. The day is 11 hours 36 minutes long, 2 minutes shorter than yesterday.
0UV Low
53Air quality
92%Humidity
0%Cloud
Now
1:00 AM
55feels55
now, clear
Today
Oct 6
8050
UV 6
Wed
Oct 7
8856
clear day
Thu
Oct 8
8258
clear day
Fri
Oct 9
8354
overcast
Sat
Oct 10
8757
overcast
Sun
Oct 11
8460
overcast
Mon
Oct 12
8761
overcast
55°
80°50°
88°56°
82°58°
83°54°
87°57°
84°60°
87°61°
As of 1:00 AM in Cahokia Mounds State Historic Site, Illinois.
Air quality
The air at Cahokia Mounds State Historic Site
Index 53, moderate, led by fine particles. Read at 12 AM from its reporting area, St. Louis (Metro-east) (IL), 7 miles off.
53Moderate
- Fine particles (PM2.5)53Moderate5.7 mi
- Ozone19Good0 ppb6.8 mi
- Coarse particles (PM10)21Good5.7 mi
- Nitrogen dioxide25Good27.7 ppb8 mi
- Sulfur dioxide0Good0.7 ppb8 mi
- Carbon monoxide-0.7 ppm8 mi
The days ahead
Highest moderate, Wed Oct 7, led by fine particles. Yesterday measured 43, good.
GoodModerate
- 43YesterdayOct 5
- GoodTodayOct 6
- ModerateWedOct 7
Smoke, the next 43 hours
Little smoke near the ground through Wed 7 PM: the index from smoke stays at 6 or under.
Precipitation
What has fallen at Cahokia Mounds State Historic Site
None in the last 3 days, to Mon 11 PM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.00in
- Last 3 days
- 0.00in
Visibility
How far you can see at Cahokia Mounds State Historic Site, the next 43 hours
Visibility stays 10 miles or more through Wed 7 PM.
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