Temperature
56 F at 3 AM; 80 F at its warmest, 3 PM Thursday, and 56 F at its coolest, 2 AM.
- Now
- 56F
- 3 AM
- Highest
- 80F
- 3 PM Thursday
- Lowest
- 56F
- 2 AM
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
St Charles County Regional Airport/Smartt Field, Missouri
Small airport in St. Charles County, Missouri55°
58°/43°
Mostly cloudy·
Feels like 55°·Moderate breeze 13 mph NW
Now. St Charles County Regional Airport/Smartt Field is 55° and mostly cloudy at 4 AM. The dew point is 49°, so the air feels dry and comfortable. Moderate breeze from the northwest at 13 mph.
Today and tonight. It warms to about 58° by 2 PM. Tonight falls to about 38° by 7 AM, under a mostly clear sky.
The week. The warmest day ahead is Thursday, near 80°, and the coolest tomorrow, near 61°. The days ahead look dry. Frost is possible tomorrow morning, a low of 36°.
The sky tonight. The sun sets at 6:22 PM. The Moon is a waxing crescent, 33% lit, and sets at 10:21 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 11 minutes long, 2 minutes shorter than yesterday.
0UV Low
18Air quality
77%Humidity
77%Cloud
Now
4:00 AM
55feels55
13mph
Today
Oct 16
5843
38%
21mph
Sat
Oct 17
6136
12mph
UV 6
Sun
Oct 18
6735
UV 6
Mon
Oct 19
7337
overcast
Tue
Oct 20
7540
overcast
Wed
Oct 21
7743
overcast
Thu
Oct 22
8047
overcast
55°
58°43°
61°36°
67°35°
73°37°
75°40°
77°43°
80°47°
As of 4:00 AM in St Charles County Regional Airport/Smartt Field, Missouri.
Air quality
The air at St Charles County Regional Airport/Smartt Field
Index 18, good, led by ozone. Read at 3 AM from its reporting area, Saint Louis (MO), 25 miles off.
18Good
- Fine particles (PM2.5)-22.2 mi
- Ozone18Good19 ppb2.4 mi
- Coarse particles (PM10)-22.6 mi
- Nitrogen dioxide2Good2.6 ppb11.6 mi
- Sulfur dioxide0Good0.3 ppb12.3 mi
- Carbon monoxide-0.1 ppm22.2 mi
The days ahead
Yesterday measured 40, good.
GoodModerate
- 40YesterdayOct 15
Smoke, the next 40 hours
No smoke near the ground through Sat 7 PM.
Precipitation
What has fallen at St Charles County Regional Airport/Smartt Field
1.40 in in the last 24 hours, 1.85 in over the last 3 days, to Fri 3 AM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 1.40in
- Last 3 days
- 1.85in
3 days agoLast 24 hours 76%
Visibility
How far you can see at St Charles County Regional Airport/Smartt Field, the next 40 hours
Visibility stays 7 miles or more through Sat 7 PM, lowest 7 miles Fri 2 PM.
F
Now, today, and the week
Weather instrument stations by state
Airfield
- Code
- SET
- ICAO
- KSET
- IATA
- -
- Field elevation
- 437 ft
- Serves
- St Charles
- Kind
- Small airport
- Scheduled service
- No
- Its own instrument
- SET
- Wind now
- From 310° at 13 mph, read 16 Oct, 03:54
Runways
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 09 / 27 | 2,000 ft | 75 ft | Asphalt | 91° / 271° | 10 mph head, on 27 | 8 mph from the right |
| 18 / 36 | 3,800 ft | 75 ft | Asphalt | 181° / 1° | 8 mph head, on 36 | 10 mph from the left |
Measured here
What the airfield's own instrument measured, the last 24 hours
Every hour from St. Charles (SET), St Charles County Regional Airport/Smartt Field's own instrument, measure by measure, on the field's own clock.
Humidity and dew point
A dew point of 49 F, the air 77% saturated; the humidity ran from 64% at 5 PM Thursday to 96% at 9 AM Thursday.
- Dew point now
- 49F
- 3 AM
- Humidity now
- 77%
- Humidity, range
- 64 to 96%
How it is measured: Humidity variables, Field Book FB-WAT-002
Wind
14 mph from the northwest at 3 AM; at its strongest 20 mph, 10 PM Thursday, with a gust of 35 mph at 10 PM Thursday.
- Now
- 14mph
- from the northwest
- Strongest
- 20mph
- 10 PM Thursday
- Highest gust
- 35mph
- 10 PM Thursday
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
Pressure
30.11 inHg at 3 AM, rising 0.03 inHg over 3 hours; 0.10 inHg higher than a day before.
- Now
- 30.11inHg
- 3 AM
- 3 hours
- +0.03inHg
- rising
- 24 hours
- +0.10inHg
How it is measured: Hydrostatic balance, Field Book FB-ENG-003
Visibility
Down to 0.2 miles at 9 AM Thursday, under a mile for 2 hours; 10 miles or more now.
- Now
- 10+mi
- Lowest
- 0.2mi
- 9 AM Thursday
- Hours under a mile
- 2
How it is measured: Fog types, Field Book FB-WAT-020
Cloud base
The lowest cloud base came down to 400 ft at 9 AM Thursday; a base was reported in 22 of the hours.
- Lowest base now
- -
- Lowest in 24 hours
- 400ft
- 9 AM Thursday
- Hours with a base reported
- 22
How it is measured: Cloud classification, Field Book FB-SKY-001
Precipitation
1.36 in measured in the gauge, the most, 0.74 in, in the hour to 9 AM Thursday.
- Last 24 hours
- 1.36in
- Wettest hour
- 0.74in
- 9 AM Thursday
- Hours with some
- 8
How it is measured: ASOS, Field Book FB-INS-002
St. Charles: every reading, the last 7 days, 30 days and the year, and how well it reports
What is measuring near here
The 5 instruments nearest St Charles County Regional Airport/Smartt Field, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.0 miles away.
measured now3 instruments
St. CharlesSET
At an airfield/0.0 mi away/440 ft/3 ft above here
temp, wind, gust, visibility, precip, pressure
St. CharlesSCLM7
At a river or reservoir gauge/10.0 mi away/443 ft/6 ft above here
temp, wind, gust, humidity, pressure
Elsberry PMCS2220
At a soil climate station/24.2 mi away/527 ft/90 ft above here
temp, humidity, soil temp, soil moisture
measured daily2 instruments
Portage Des Sioux 0.2 SSEMO-SS-65
In a volunteer observer's own ground/4.8 mi away/435 ft/2 ft below here
precip, snowfall, snow depth
Saint CharlesSCHM7
At a cooperative observer's station/10.8 mi away/551 ft/114 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 Missouri
24 places, each with its own forecast and its own instruments.
BransoncityCape GirardeaucityColumbiacityHannibalcityHidden Valleyski areaIndependencecityJefferson CitycityJoplincityKansas CitycityKirksvillecityLake of the OzarksfeatureMark Twain National ForestfeatureMaryvillecityPoplar BluffcityRollacitySedaliacitySikestoncitySnow Creekski areaSpringfieldcitySt CharlescitySt JosephcitySt LouiscityTable Rock LakefeatureWest Plainscity
Near St Charles County Regional Airport/Smartt Field
The nearest places, each with its own forecast and the instruments nearest it.
- Portage Des Siouxcity, 5 mi
- Old Jamestowncommunity, 10 mi
- Hazelwoodcity, 10 mi
- St Charlescity, 10 mi
- Florissantcity, 11 mi
- West Altoncity, 11 mi
- Champvillage, 13 mi
- Black Jackcity, 13 mi
- Calverton Parkcity, 13 mi
- Bridgetoncity, 13 mi
- Berkeleycity, 13 mi
- Edmundsoncity, 14 mi
Airports near St Charles County Regional Airport/Smartt Field
- St. Louis Lambert International AirportSTL, 13 mi
- Spirit of St Louis AirportSUS, 22 mi
- Washington Regional AirportFYG, 38 mi
- Sullivan Regional AirportUUV, 62 mi
- Mexico Memorial AirportMYJ, 76 mi
- Hannibal Regional AirportHAE, 77 mi
- Perryville Regional AirportPCD, 79 mi
- Farmington Regional AirportFAM, 81 mi