California Redwood Coast-Humboldt County Airport

KACV / ACV

Arcata/Eureka, US

Last Updated
Jun 27, 06:11Z

Current Weather

Display Units
Fresh 11 min ago
06:11Z

☀️ Day
VFR
Flight Rules
13°C
Temperature
Dewpoint: 13°C
4 kt
300°
10 SM
Visibility
3,000 ft
Ceiling
Above Ground Level
1016 hPa
QNH
Altimeter Setting

Raw METAR

SPECI KACV 270611Z AUTO 30004KT 10SM OVC030 13/13 A2999 RMK AO2 T01330133

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 221 ft
OVC 3,000 ft AGL
☁️
OVC
Overcast (8/8 sky coverage)
3,000 ft
AGL (Above Ground)
3,221 ft AMSL

Weather Briefing

VFR

California Redwood Coast-Humboldt County Airport is currently reporting visual flight rules (VFR) conditions with overcast skies at 3,000 feet and 10 SM visibility.

Wind Analysis

Winds are from the west-northwest (300°) at 4 knots.

Visibility & Ceiling

Visibility is 10 SM. The ceiling is 3000 feet AGL (overcast), well above standard VFR minimums.

Temperature & Moisture

Temperature is 13°C (55°F) with a dewpoint of 13°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.

Forecast Outlook

The TAF forecast covers the next 24 hours. The forecast shows a transition between VFR and IFR conditions. Pilots should monitor the forecast closely and have an alternate airport plan. Expected weather includes: Mist, Haze. Expect variable wind speeds ranging from 4 to 18 knots.

Pilot Recommendations

Conditions are favorable for visual flight. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1016 hPa
Sea Level Pressure
For altitude above MSL
QFE
1009 hPa
Field Pressure
Height above aerodrome (221 ft)
Pressure Alt
139 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -48 ft
ISA Deviation: -1.6°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KACV 270542Z 2706/2806 33005KT 4SM BR OVC007 FM270900 36005KT 2SM BR OVC004 FM271200 VRB04KT 4SM BR OVC004 FM271800 32011KT 5SM HZ OVC007 FM272100 32016KT P6SM BKN015 FM280000 33018KT P6SM BKN250
Upcoming Changes (Next 12 Hours)
06:22Z BASE
+0h
IFR 330° 5 kt
Visibility: 4SM
Ceiling: 700 ft
Mist
09:00Z FM270900
+3h
LIFR 360° 5 kt
Visibility: 2SM
Ceiling: 400 ft
Mist
12:00Z FM271200
+6h
LIFR VRB 4 kt
Visibility: 4SM
Ceiling: 400 ft
Mist
18:00Z FM271800
+12h
IFR 320° 11 kt
Visibility: 5SM
Ceiling: 700 ft
Haze

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
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  • • Click legend items to toggle data series
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Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
ACV
01
19
14
32 ✈️

Runway Information

Runway Length Width Surface Heading Wind Component
01/19 4,499 ft 150 ft ASP 29°
0.1 kt 4.0 kt
89° angle
✈️ 14/32
Active: 32
6,000 ft 150 ft ASP 152°
3.8 kt 1.4 kt
20° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KACV

10,565 observations | Sep 2025 - Jun 2026

Flight Rules Distribution

VFR
51.7%
MVFR
22.6%
IFR
11.9%
LIFR
13.8%

California Redwood Coast-Humboldt County Airport is frequently affected by reduced visibility conditions, with VFR weather only 51.7% of the time and IFR/LIFR conditions occurring in 25.7% of observations. Prevailing winds are from the NW averaging 6 knots. Calm conditions occur 27.2% of the time. Temperatures typically range between 0°C and 24°C with an average of 10.9°C. Low visibility conditions (below 3 SM) occur in 5.3% of weather observations. The best months for VFR flying are January, February, April.

Wind Analysis

Prevailing Direction: NW (315°)
Average Speed: 6 kt
Maximum Recorded: 24 kt
Calm Winds: 27.2%
Direction Distribution:
E
15.7%
N
6.7%
S
7.1%
W
8.6%
NE
3.3%
NW
17.9%
SE
9.1%
SW
4.5%

Temperature Range

Average: 10.9°C
Range: 0°C to 24°C
0°C 24°C

Visibility

Average: 8.2 SM
Below 3 SM: 5.3%
Fog Frequency: 8.6%

Best Months for VFR

January February April

Runway Wind Analysis

Runway 01/19
Favorable wind: 100%
Avg crosswind: 4.2 kt
Runway 14/32
Favorable wind: 100%
Avg crosswind: 2.7 kt

Statistics computed from 10,565 METAR observations (Sep 2025 - Jun 2026). Data sourced from official aviation weather services. Updated daily.

California Redwood Coast-Humboldt County Airport - Airport Information

Airport Details

ICAO Code: KACV
IATA Code: ACV
Type: medium airport
Status: active
Elevation: 221 ft MSL

Location

City: Arcata/Eureka
Country: US
Latitude: 40.978101°
Longitude: -124.109000°
Time Zone: Etc/GMT+8

Runway Information

Runway 01/19
Length: 4,499 ft
Width: 150 ft
Surface: ASP
ILS: No
Runway 14/32
Length: 6,000 ft
Width: 150 ft
Surface: ASP
ILS: No

About California Redwood Coast-Humboldt County Airport

Overview

California Redwood Coast-Humboldt County Airport serves the Arcata/Eureka region in northern California, providing crucial aviation access to a rural coastal area. As a medium-sized airport with two paved runways, it supports general aviation, regional transportation, and potential emergency services in Humboldt County.

Flying Conditions

The airport experiences highly variable weather conditions, with VFR prevailing 52.9% of the time, but significant periods of marginal and instrument flight rules. Coastal influences create consistent easterly winds averaging 5.7 knots, with calm conditions occurring 30% of the time. Temperature ranges from 1°C to 24°C, with an average of 11.1°C, presenting moderate climate stability for operations.

Notable Features

Located at 221 feet mean sea level, the airport sits in a coastal terrain environment characterized by proximity to the Pacific Ocean and surrounding forested regions. Both runways (01/19 at 4,499 ft and 14/32 at 6,000 ft) are asphalted, providing flexibility for different aircraft types and operational requirements. Visibility averages 7.9 statute miles, with occasional fog and reduced visibility periods.

Approach Considerations

Both runways demonstrate excellent wind alignment, with 100% favorable wind conditions and minimal average crosswinds (3.9 knots for 01/19, 2.9 knots for 14/32). Pilots should anticipate potential fog and reduced visibility, particularly during months with lower VFR percentages. January, October, and November offer statistically the most consistent visual flying conditions.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.