Temperature
70 F at 2 AM; 88 F at its warmest, 3 PM Thursday, and 69 F at its coolest, 7 AM Thursday.
- Now
- 70F
- 2 AM
- Highest
- 88F
- 3 PM Thursday
- Lowest
- 69F
- 7 AM Thursday
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
Coming up. Tomorrow is 23 degrees cooler: a high of 59° after 82° today.
Now. McGhee Tyson Airport is 70° and mostly clear at 3 AM. The dew point is 66°, so the air feels oppressive. Gentle breeze from the southwest at 9 mph.
Today and tonight. It warms to about 81° by 2 PM. Tonight falls to about 49° by 5 AM, with some cloud. The sun is strong around midday: UV index 7, high. Unprotected skin can burn in under half an hour.
The week. The warmest day ahead is Thursday, near 75°, and the coolest tomorrow, near 59°. Rain is possible tomorrow (43%).
The sky tonight. The sun sets at 6:59 PM. The Moon is a waxing crescent, 33% lit, and sets at 11:05 PM. The next full Moon is Monday, Oct 26. 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 day is 11 hours 17 minutes long, 2 minutes shorter than yesterday.
As of 3:00 AM in McGhee Tyson Airport, Tennessee.
Air quality
Index 32, good, led by ozone. Read at 2 AM from its reporting area, Great Smoky Mtns. Natl. Park - TN (TN), 13 miles off.
Good each day through Sat Oct 17, led by fine particles. Yesterday measured 36, good.
Little smoke near the ground through Sat 8 PM: the index from smoke stays at 22 or under.
Precipitation
None in the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.
Visibility
Visibility stays 9 miles or more through Sat 8 PM, lowest 9 miles Fri 7 AM.
F
Now, today, and the week
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 05L / 23R | 10,000 ft | 150 ft | Concrete | 45° / 225° | 9 mph head, on 23R | 2 mph from the left |
| 05R / 23L | 9,000 ft | 150 ft | Asphalt | 45° / 225° | 9 mph head, on 23L | 2 mph from the left |
Measured here
Every hour from Knoxville Municipal (TYS), McGhee Tyson Airport's own instrument, measure by measure, on the field's own clock.
70 F at 2 AM; 88 F at its warmest, 3 PM Thursday, and 69 F at its coolest, 7 AM Thursday.
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
A dew point of 66 F, the air 87% saturated; the humidity ran from 45% at 3 PM Thursday to 90% at 4 AM Thursday.
How it is measured: Humidity variables, Field Book FB-WAT-002
8 mph from the southwest at 2 AM; at its strongest 9 mph, 11 AM Thursday, and no gust reported.
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
30.04 inHg at 2 AM, steady over 3 hours; 0.06 inHg lower than a day before.
How it is measured: Hydrostatic balance, Field Book FB-ENG-003
Down to 6 miles at 11 AM Thursday; 10 miles or more now.
How it is measured: Fog types, Field Book FB-WAT-020
The lowest cloud base came down to 3,000 ft at 10 AM Thursday; a base was reported in 19 of the hours.
How it is measured: Cloud classification, Field Book FB-SKY-001
None measured in the gauge in the last 24 hours.
How it is measured: ASOS, Field Book FB-INS-002
Knoxville Municipal: every reading, the last 7 days, 30 days and the year, and how well it reports
The 4 instruments nearest McGhee Tyson Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.7 miles away.
measured now2 instruments
At an airfield/0.7 mi away/981 ft/level with here
temp, wind, gust, visibility, precip, pressure
Indian Grave GapIGGT1
At a river or reservoir gauge/16.6 mi away/2,861 ft/1,880 ft above here
temp, wind, gust, humidity, pressure
measured daily2 instruments
Louisville 3.6 ETN-BT-49
In a volunteer observer's own ground/1.5 mi away/1,026 ft/45 ft above here
precip, snowfall, snow depth
KnoxvilleKNXT1
At a cooperative observer's station/5.3 mi away/817 ft/164 ft below here
snowfall, snow depth, precip, high, low
-
Snow on the ground
23 places, each with its own forecast and its own instruments.
The nearest places, each with its own forecast and the instruments nearest it.