- 55/64/70 @ Poplar St. BridgeSS0234
Beside a road/0.4 mi away/-/- ft from here
temp, pavement temp, wind, visibility, precip
Gateway Arch National Park, Illinois
National Park in St. Clair County, Illinois60°
78°/54°
Clear·
Feels like 60°·Light air 2 mph ENE
Now. Gateway Arch National Park is 60° and clear at 9 PM. The dew point is 50°, so the air feels dry and comfortable. Light air from the east-northeast at 2 mph.
Today and tonight. Tonight falls to about 51° by 7 AM, under a mostly clear sky. No rain is expected for the rest of the day. Air quality is moderate (index 55): fine for most people, though people unusually sensitive to air pollution may feel it outdoors.
The week. The warmest day ahead is Wednesday, near 88°, and the coolest tomorrow, near 80°. The days ahead look dry.
The sky now. The Moon is a waning crescent, 24% lit, and rises at 2:34 AM after midnight. The next new Moon is Saturday, Oct 10. 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 38 minutes long, 3 minutes shorter than yesterday.
0UV Low
55Air quality
84%Humidity
0%Cloud
Now
9:00 PM
60feels60
now, clear
Today
Oct 5
7854
UV 6
Tue
Oct 6
8051
UV 6
Wed
Oct 7
8858
clear day
Thu
Oct 8
8259
mostly clear day
Fri
Oct 9
8356
overcast
Sat
Oct 10
8757
overcast
Sun
Oct 11
8462
10%
60°
78°54°
80°51°
88°58°
82°59°
83°56°
87°57°
84°62°
As of 9:00 PM in Gateway Arch National Park, Illinois.
Air quality
The air at Gateway Arch National Park
Index 55, moderate, led by fine particles. Read at 9 PM from its reporting area, St. Louis (Metro-east) (IL), 12 miles off.
55Moderate
- Fine particles (PM2.5)55Moderate1.2 mi
- Ozone35Good7 ppb1.2 mi
- Coarse particles (PM10)32Good2.6 mi
- Nitrogen dioxide20Good21.5 ppb2.7 mi
- Sulfur dioxide0Good0.7 ppb2.7 mi
- Carbon monoxide-0.5 ppm2.7 mi
The days ahead
Highest moderate, Wed Oct 7, led by fine particles. Yesterday measured 43, good.
GoodModerate
- 43YesterdayOct 4
- GoodTodayOct 5
- GoodTueOct 6
- ModerateWedOct 7
Smoke, the next 41 hours
No smoke near the ground through Wed 1 PM.
Precipitation
What has fallen at Gateway Arch National Park
None in the last 3 days, to Mon 8 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 Gateway Arch National Park, the next 41 hours
Visibility stays 10 miles or more through Wed 1 PM.
F
Now, today, and the week
Weather instrument stations by state
Park
- Designation
- National Park
- Area
- 0.3 sq mi
- Height at its point
- 417 ft
- Also in
- Missouri
- County
- St. Clair County
- State
- Illinois
- Latitude
- 38.6222° N
- Longitude
- 90.1752° W
What is measuring near here
The 6 instruments nearest Gateway Arch National Park, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.
measured now4 instruments
At an airfield/3.7 mi away/413 ft/4 ft below here
temp, wind, gust, visibility, precip, pressure
Citizen station GW5557GW5557
In a volunteer observer's own ground/6.2 mi away/422 ft/5 ft above here
temp, humidity, wind, precip, pressure
Rain Gage At Scott Air Force Base383209089513901
On a military installation/18.0 mi away/-/- ft from here
temp, wind, gust, humidity, pressure
measured daily2 instruments
East St. Louis 1.3 NWIL-SC-36
In a volunteer observer's own ground/1.6 mi away/423 ft/6 ft above here
precip, snowfall, snow depth
Milstadt 2SWMSTI2
At a cooperative observer's station/12.7 mi away/656 ft/239 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 Gateway Arch National Park
The nearest places, each with its own forecast and the instruments nearest it.
- Saugetvillage, 2 mi
- Brooklynvillage, 2 mi
- East St. Louiscity, 3 mi
- Cahokia Heightscity, 4 mi
- Venicecity, 4 mi
- Fairmont Cityvillage, 4 mi
- Madisoncity, 4 mi
- Washington Parkvillage, 4 mi
- East Carondeletvillage, 7 mi
- Granite Citycity, 7 mi
- Dupovillage, 7 mi
- Caseyvillevillage, 8 mi