Temperature
66 F at 1 AM; 85 F at its warmest, 12 PM Thursday, and 58 F at its coolest, 6 AM Thursday.
- Now
- 66F
- 1 AM
- Highest
- 85F
- 12 PM Thursday
- Lowest
- 58F
- 6 AM Thursday
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
Airports/California/North Island Naval Air Station-Halsey Field
Alert. A Heat Advisory is in force for North Island Naval Air Station-Halsey Field until 8 PM tomorrow. Read the alert in full, and see what it means in the Field Book.
Now. North Island Naval Air Station-Halsey Field is 69° and clear at 2 AM. The dew point is 59°, so the air feels a little humid. Light air from the north at 3 mph.
Today and tonight. It warms to about 92° by 3 PM. Tonight falls to about 75° by 5 AM, under a mostly clear sky. No rain is expected for the rest of the day. The sun is strong around midday: UV index 7, high. Unprotected skin can burn in under half an hour. Air quality is moderate (index 52): fine for most people, though people unusually sensitive to air pollution may feel it outdoors.
The week. The warmest day ahead is tomorrow, near 90°, and the coolest Thursday, near 70°. Rain is likely Wednesday (66%) and Thursday (51%). Rain is possible Tuesday (43%).
The sky tonight. The sun sets at 6:15 PM. The Moon is a waxing crescent, 34% lit, and sets at 10:34 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 23 minutes long, 2 minutes shorter than yesterday.
As of 2:00 AM in North Island Naval Air Station-Halsey Field, California.
Air quality
Index 52, moderate, led by fine particles. Read at 2 AM from its reporting area, San Diego Coast (CA), 9 miles off.
Good each day through Today, led by ozone. Yesterday measured 48, good.
Little smoke near the ground through Sat 11 PM: the index from smoke stays at 22 or under.
Precipitation
None in the last 3 days, to Fri 1 AM. Measured by radar and rain gauges, as water.
Visibility
Visibility stays 10 miles or more through Sat 11 PM.
F
Now, today, and the week
| Runway | Length | Width | Surface | Heading, true | Wind along it now | Crosswind now |
|---|---|---|---|---|---|---|
| 11 / 29 | 7,501 ft | 200 ft | Asphalt and concrete | 123° / 303° | Calm | Calm |
| 18 / 36 | 8,001 ft | 200 ft | Asphalt and concrete | 196° / 16° | Calm | Calm |
Measured here
Every hour from North Island NAS (NZY), North Island Naval Air Station-Halsey Field's own instrument, measure by measure, on the field's own clock.
66 F at 1 AM; 85 F at its warmest, 12 PM Thursday, and 58 F at its coolest, 6 AM Thursday.
How it is measured: Stevenson screen and siting, Field Book FB-INS-009
A dew point of 62 F, the air 87% saturated; the humidity ran from 25% at 12 PM Thursday to 87% at 7 PM Thursday.
How it is measured: Humidity variables, Field Book FB-WAT-002
Calm at 1 AM; at its strongest 16 mph, 3 PM Thursday, and no gust reported.
How it is measured: Coriolis as geometry, Field Book FB-ENG-008
29.91 inHg at 1 AM, steady over 3 hours; 0.07 inHg lower than a day before.
How it is measured: Hydrostatic balance, Field Book FB-ENG-003
Down to 9 miles at 7 PM Thursday; 9 miles now.
How it is measured: Fog types, Field Book FB-WAT-020
The lowest cloud base came down to 1,500 ft at 10 AM Thursday; a base was reported in 10 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
North Island NAS: every reading, the last 7 days, 30 days and the year, and how well it reports
The 4 instruments nearest North Island Naval Air Station-Halsey Field, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.
measured now2 instruments
At an airfield/0.6 mi away/26 ft/level with here
temp, wind, gust, visibility, precip, pressure
Mission Valley RAWSBVDC1
A remote fire weather station/7.4 mi away/305 ft/279 ft above here
temp, wind, gust, humidity, pressure
measured daily2 instruments
San Diego 8.0 SWCA-SD-229
In a volunteer observer's own ground/2.8 mi away/211 ft/185 ft above here
precip, snowfall, snow depth
San Diego Sea WorldSWDC1
At a cooperative observer's station/4.7 mi away/-13 ft/39 ft below here
snowfall, snow depth, precip, high, low
-
Snow on the ground
33 places, each with its own forecast and its own instruments.
The nearest places, each with its own forecast and the instruments nearest it.