EGLL weather now
London Heathrow Airport · United Kingdom · 83 ft
observed 23:20Z
6 min ago
automatic station (AUTO)
no next due can be derived
Europe/London, UTC+01:00
- Vis
- 10 km+
- 10 km or more
- Ceiling
- None
- FEW022
- Wind on 27R
- 270/1 HW 1 kt XW 0 kt
- wind's pick · wind true, rwy magnetic
- Observed
- 23:20Z
- 6 min ago
VFR and easy right now: a 1 kt wind, 10 km or more of visibility. The forecast turns: visibility down to 3.0 km setting in, 00:00Z to 09:00Z, 34 min from now, and 40% chance of visibility down to 300 m, 03:00Z to 09:00Z, 3 h 34 from now.
Worth a second look
Fog watch1 °C spreadLIFR forecastPROB30 300 ft from 09:00ZAround the field
2.0 NM
True north up · runway 27R 269°M
Asking the traffic feed. The runways above are drawn from the published thresholds.
Paler marks are higher. Not for separation.
No observed movement counts were supplied for this airfield, so nothing here is a claim about its traffic. What is shown is a wind-only inference: worked out from the reported wind against the published runway alignments, not from traffic. The wind cannot corroborate it, because the wind is where it came from.
Derived from the reported surface wind against the published runway alignments. Not ATIS. Not an operational source. Density altitude is computed from the reported temperature and pressure at field elevation, not measured.
Raw METAR · observed 23:20Z
Tap any group to see what it says.
The observation, in plain English
At 23:20Z London Heathrow Airport reported VFR: wind from 270° true at 1 kt; visibility 10 km or more; few clouds at 2,200 ft and scattered at 3,800 ft. Temperature 14 °C with a dew point of 13 °C: a 1 °C spread, at or inside the 3 °C watch threshold, so mist or fog can form quickly. QNH 1030 hPa (30.42 inHg). The observation is fully automated, with no human observer: an automatic station can miss cloud type and some present weather.
TAF
This forecast does not come into force until 00:00Z, so no hour on the bar is the present one.
Tap any group to see what it says.
Each block is one hour of the validity, coloured by the category the forecast expects. Hatched blocks carry a TEMPO or PROB spell: those are possibilities, not the expected weather. A block with no colour is an hour whose period says nothing about visibility or cloud, so no category can be worked out. That is not the same as a clear hour. An hour whose period reports a broken or overcast layer at a height it does not give is uncoloured for the other reason: the cloud was stated and the ceiling cannot be read. Across a BECMG window the worse of the old and new conditions is shown, because the change is only forecast to be complete by the end of it: an improvement appears when it is due, not when it starts.
Prevailing from the start of the validity:
Variable direction at 3 kt; 10 km or more; few (1-2 oktas) at 2,200 ft.
Becoming, gradually across this period, and holding afterwards:
3 km; mist; shallow fog.
40% probability. That is a possibility, not a forecast that it will happen:
300 m; fog; sky obscured, vertical visibility at a height the station could not measure.
Becoming, gradually across this period, and holding afterwards:
10 km or more; no significant weather from here on.
30% chance of temporary spells, each under an hour. That is a possibility, not the forecast:
Broken (5-7 oktas) at 300 ft.
30% probability. That is a possibility, not a forecast that it will happen:
7 km.
Temporary spells within this period, each under an hour, interrupting the prevailing forecast rather than replacing it:
3 km; mist; shallow fog.
30% probability. That is a possibility, not a forecast that it will happen:
300 m; fog; sky obscured, vertical visibility at a height the station could not measure.
Daylight
Sunset was 17:36Z (Sat 18:36) · civil twilight ended 18:09Z (Sat 19:09) · sunrise was 06:04Z (Sat 07:04)
Night, for licensing purposes, began 18:09Z (Sat 19:09): the end of civil twilight, 33 min after sunset, and it is night now. Tomorrow’s dawn is not part of this calculation.
Computed from the aerodrome position and today’s date: a calculation, not an observation. Civil twilight is the sun 6° below the horizon. Times in brackets are the aerodrome’s local clock.
Winds aloft over EGLL
forecast · Open-MeteoAsking Open-Meteo for the forecast over EGLL. Nothing is drawn here until it answers, and an empty chart is not calm air aloft.
Nearest alternatestap → same page for it
Asking the observation feed for the nearest reporting airfields. None is listed until it answers, which is not the same as there being none.
More numbers
Rel humidity
94%
from 14 / 13 °C
Press alt
−374 ft
457 ft below the field
ISA dev
−1.7 °C
vs 15.7 °C standard
T / Td in °F
57/55
same reading, other unit
All four are derived from the observation, not reported by it.
About EGLL
EGLL is London Heathrow Airport, country code GB. It lies at 51.4707°N, 0.4599°W, 83 ft above mean sea level. Its runways, as the aerodrome record lists them: 09L/27R and 09R/27L. Their live head and crosswind components are in the crosswind calculator, and the ends most likely in use now are worked out in the runway-in-use section further up this page. As a rule, routine METARs are issued hourly and half-hourly at busier aerodromes, with a SPECI whenever the weather changes sharply in between, and TAFs are reissued every six hours. That is the usual practice rather than this field’s published schedule, which is not held here.
Read further
Data quality
- Observation
- 6 min ago
- NOAA Aviation Weather Center
- Forecast
- NOAA Aviation Weather Center · issue time did not come with this read
- Traffic
- ADS-B positions, through this site · not asked yet on this page
- Winds aloft
- Open-Meteo · not asked yet on this page
- Nearby airfields
- NOAA Aviation Weather Center · not asked yet on this page
- Sun times
- computed on this page · worked out from the aerodrome's position, so there is no feed to age
- Field geometry
- published runway thresholds · held on file here, and published with no age of its own
For information and training only. Not an approved briefing source: always brief from the official service for your area before you fly.Observations and forecasts: NOAA’s Aviation Weather Center. Winds aloft: Open-Meteo. Sun times: computed here from the aerodrome’s position. Runway suggestion: computed here from the reported wind against the published runway alignments, and replaced by the observed runway where movements have been seen.
Common questions
What is the current weather at London Heathrow Airport?
As of 23:20Z, 6 min ago: flight category VFR, wind 270/01. The raw METAR is on this page, decoded group by group.
Which runway is London Heathrow Airport using today?
Runway 27R is the one the wind favours, with 1 kt of headwind and 0 kt across, computed from the reported wind against each runway's true alignment. It is not ATIS and it is not an operational source.
This page holds no movement record for this aerodrome in the last hour. That is a fact about what has been watched and not a count of what flew: movements are only recorded at aerodromes somebody has had open, and most are never watched at all. So this is an inference from the wind rather than a record of what is in use.
What does EGLL mean?
EGLL is the four letter ICAO code for London Heathrow Airport, in United Kingdom. Aviation weather and flight plans use ICAO codes; passengers usually see a three letter IATA code instead.
How current is this page?
The observation on this page was taken at 23:20Z, 6 min ago. A new one replaces it as soon as the aerodrome issues it, and every panel here shows its own age rather than asking you to assume one.