N819EK
Cessna Citation SII
United States
HWD (Hayward Air Terminal Airport, Hayward)

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Viewing period:
Compared to: preceding 12 months · May 2024 – May 2025
May 2025 – Apr 2026·vs May 2024 – May 2025· Emissions increasing vs prior period

Emissions Overview

0.0
Tons CO2 This Month
Below Average0.0× avg for Citation SII
2.1
Tons CO2 YTD
Below Average0.2× avg for Citation SII
108.3
CO2 Tons Since 2025
Above Average1.8× avg for Citation SII
Emissions Intensity0.01t CO₂/nmTypical0.8× avg for Citation SII
83.4 tons CO2 in selected period

2026 pace: On track for approximately 6t CO₂ by year end · ↓ 94% vs full year 2025 (106t)

Flight Patterns & Behaviour

Emissions up 245% vs prior period, driven by Duluth → Hayward

78t
Period total CO₂
4.4t
Avg per flight
18
Flights
Moderately Concentrated3 routes account for 44% of total emissions
Highest emission route
Duluth → Hayward
12.4t CO₂ total · 0.0087t CO₂/nm
🇺🇸United States·16202 aircraft tracked·Ranked 1st by emissions among 109 countries·0.3× country averageBelow Average

Subject to FAA oversight — no mandatory carbon reporting for private aviation

What's ChangedCompared to prior equivalent period
Emissions
245%
23t → 78t CO₂
Intensity
12%
0.0048 → 0.0053 t CO₂/nm
New Routes
13
78t CO₂ combined
Dropped Routes
7
Prior period only
Avg per Flight
53%
2.8t → 4.4t
Flight Count
10
8 → 18 flights

Route and airport counts may include data processing artefacts.

Spikes

Significant deviations from this aircraft's baseline in the selected period.

CO₂ Above Baseline

49t

Signals Detected

5

Highest Severity

Medium

Aircraft
Medium
New2 May – 8 May 2025
Elevated activity period · 1 flights in 6 days vs baseline of 0
Contributed approximately 1t CO₂ to period total — 2% of period emissions
Aircraft
Medium
New8 Jun – 28 Jun 2025
Elevated activity period · 4 flights in 20 days vs baseline of 1
Contributed approximately 16t CO₂ to period total — 20% of period emissions
Aircraft
Medium
New15 Aug – 8 Sept 2025
Elevated activity period · 4 flights in 24 days vs baseline of 2
Contributed approximately 16t CO₂ to period total — 21% of period emissions
Aircraft
Medium
Historical2 May – 14 Jun 2025
43-day inactive period
7.5t CO₂ in the 7 days following resumption
Aircraft
Medium
Historical23 Jun – 21 Aug 2025
60-day inactive period
8.4t CO₂ in the 7 days following resumption
Recent Flights
Feb 6, 20262.1t CO₂
KHWDHayward
KTRMPalm Springs
435 miles1h 31m
Dec 2, 20252.6t CO₂
KPVUProvo
KHWDHayward
585 miles1h 48m
Dec 1, 20253.5t CO₂
KFSDSioux Falls
KPVUProvo
803 miles2h 18m
Nov 24, 202511.2t CO₂
KHWDHayward
CYKFBreslau
2,202 miles6h 48m
View Details
Nov 16, 20253.7t CO₂
KHWDHayward
KSAFSanta Fe
898 miles2h 27m
View Details
Oct 18, 20252.0t CO₂
KHWDHayward
KTRMPalm Springs
435 miles1h 28m
View Details
Oct 14, 202512.4t CO₂
KDLHDuluth
KHWDHayward
1,643 miles7h 29m
View Details
Oct 3, 20252.0t CO₂
KCIDCedar Rapids
CYKFBreslau
585 miles1h 28m
View Details
Oct 3, 20255.2t CO₂
KHWDHayward
KOMAOmaha
1,414 miles3h 18m
View Details
Sep 8, 20252.9t CO₂
KOGDOgden
KHWDHayward
592 miles1h 56m
View Details
Sep 8, 20255.0t CO₂
KDLHDuluth
KOGDOgden
1,055 miles3h 10m
View Details
Aug 21, 20255.2t CO₂
KBILBillings
CYKFBreslau
1,386 miles3h 17m
View Details
Aug 21, 20253.3t CO₂
KHWDHayward
KBILBillings
896 miles2h 11m
View Details
Jun 23, 20252.9t CO₂
KOGDOgden
KHWDHayward
592 miles1h 58m
View Details
Jun 23, 20255.4t CO₂
KDLHDuluth
KOGDOgden
1,055 miles3h 26m
View Details
Jun 15, 20252.2t CO₂
KCIDCedar Rapids
CYKFBreslau
585 miles1h 32m
View Details
Jun 14, 20255.3t CO₂
KHWDHayward
KOMAOmaha
1,414 miles3h 23m
View Details
May 2, 20251.5t CO₂
KHWDHayward
KCMACamarillo
292 miles1h 8m
View Details
Mar 31, 20251.2t CO₂
KHWDHayward
KPSPPalm Springs
411 miles1h 0m
View Details
Feb 9, 20250.5t CO₂
KHWDHayward
KSTSSanta Rosa
70 miles23m
View Details
Feb 8, 20253.5t CO₂
KPHXPhoenix
KHWDHayward
639 miles2h 20m
View Details
Feb 1, 20253.3t CO₂
KAUSAustin
KSAVSavannah
981 miles2h 11m
View Details
Feb 1, 20256.1t CO₂
KHWDHayward
KAUSAustin
1,487 miles3h 49m
View Details
Jan 27, 20253.7t CO₂
KTUSTucson
KHWDHayward
739 miles2h 24m
View Details
Jan 25, 20253.0t CO₂
KHWDHayward
KTUSTucson
739 miles2h 1m
View Details
Jan 4, 20251.5t CO₂
KHWDHayward
KPSPPalm Springs
411 miles1h 9m
View Details
Top Airports by Emissions
Hayward

Hayward

KHWD

Total CO₂

55.2t

Total Visits

12

Avg CO₂/visit

4.6t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Duluth

Duluth

KDLH

Total CO₂

22.8t

Total Visits

3

Avg CO₂/visit

7.6t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Breslau

Breslau

CYKF

Total CO₂

20.6t

Total Visits

4

Avg CO₂/visit

5.1t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Ogden

Ogden

KOGD

Total CO₂

16.1t

Total Visits

4

Avg CO₂/visit

4.0t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Omaha

Omaha

KOMA

Total CO₂

10.5t

Total Visits

2

Avg CO₂/visit

5.3t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Billings

Billings

KBIL

Total CO₂

8.4t

Total Visits

2

Avg CO₂/visit

4.2t

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Page 1 of 2
Top Routes by Emissions
Duluth Hayward

KDLH to KHWD1,644 miles

Total Flights

1

Avg CO₂/Flight

12.4t

Total Emissions

12.4t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Hayward Breslau

KHWD to CYKF2,204 miles

Total Flights

1

Avg CO₂/Flight

11.2t

Total Emissions

11.2t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Hayward Omaha

KHWD to KOMA1,415 miles

Total Flights

2

Avg CO₂/Flight

5.3t

Total Emissions

10.5t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Duluth Ogden

KDLH to KOGD1,055 miles

Total Flights

2

Avg CO₂/Flight

5.2t

Total Emissions

10.4t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Ogden Hayward

KOGD to KHWD592 miles

Total Flights

2

Avg CO₂/Flight

2.9t

Total Emissions

5.8t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Billings Breslau

KBIL to CYKF1,387 miles

Total Flights

1

Avg CO₂/Flight

5.2t

Total Emissions

5.2t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Page 1 of 3