N525MC
Cessna Citation CJ3
United States
KHYI (San Marcos Municipal Airport)

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Viewing period:
Compared to: preceding 12 months · Apr 2024 – Apr 2025
Apr 2025 – Mar 2026·vs Apr 2024 – Apr 2025

Emissions Overview

6.8
Tons CO2 This Month
Below Average0.5× avg for Citation CJ3
11.4
Tons CO2 YTD
Below Average0.3× avg for Citation CJ3
58.6
CO2 Tons Since 2025
Below Average0.3× avg for Citation CJ3
Emissions Intensity0.01t CO₂/nmTypical0.9× avg for Citation CJ3
49.3 tons CO2 in selected period

2026 pace: On track for approximately 46t CO₂ by year end · ↓ 3% vs full year 2025 (47t)

Flight Patterns & Behaviour

Activity broadly consistent with prior period — averaging 4.1t CO₂/month

4.1t
CO₂/month
2.0t
Avg per flight
17
Distinct routes
Moderately Concentrated3 routes account for 47% of total emissions
Highest emission route
Teterboro → KHYI
13.5t CO₂ total · 0.0051t CO₂/nm

Seasonal pattern: Historically peaks in November · Current month is 15% below March 2025

🇺🇸United States·16202 aircraft tracked·Ranked 1st by emissions among 109 countries·0.2× country averageBelow Average

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

What's ChangedCompared to prior equivalent period
Emissions
>300%
9t → 49t CO₂
Intensity
0.0048 → 0.0048 t CO₂/nm
New Routes
16
45t CO₂ combined
Dropped Routes
5
Prior period only
Avg per Flight
41%
1.4t → 2.0t
Flight Count
18
6 → 24 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

35t

Signals Detected

5

Highest Severity

High

Aircraft
Medium
New24 Jul – 30 Jul 2025
Elevated activity period · 1 flights in 6 days vs baseline of 1
Contributed approximately 1t CO₂ to period total — 1% of period emissions
Aircraft
Medium
New20 Sept – 26 Sept 2025
Elevated activity period · 2 flights in 6 days vs baseline of 1
Contributed approximately 5t CO₂ to period total — 11% of period emissions
Aircraft
High
New23 Oct – 2 Dec 2025
Elevated activity period · 11 flights in 40 days vs baseline of 4
Contributed approximately 23t CO₂ to period total — 48% of period emissions
Aircraft
Medium
Historical30 Jul – 27 Aug 2025
28-day inactive period
0.5t CO₂ in the 7 days following resumption
Aircraft
Medium
Historical27 Aug – 24 Sept 2025
28-day inactive period
5.9t CO₂ in the 7 days following resumption
Recent Flights
Mar 12, 20266.8t CO₂
KTEBTeterboro
KHYI
1,532 miles4h 23m
Feb 24, 20261.8t CO₂
KHYI
KLBBLubbock
350 miles1h 22m
Feb 17, 20263.5t CO₂
KHYI
KISMOrlando
996 miles2h 24m
Jan 14, 20260.6t CO₂
KHYI
KLBXAngleton
154 miles36m
View Details
Jan 9, 20260.5t CO₂
KSATSan Antonio
KHYI
44 miles19m
View Details
Dec 10, 20250.7t CO₂
KABIAbilene
KHYI
205 miles41m
View Details
Nov 29, 20252.4t CO₂
KOLVOlive Branch
KHYI
587 miles1h 44m
View Details
Nov 29, 20254.1t CO₂
KTEBTeterboro
KOLVOlive Branch
946 miles2h 42m
View Details
Nov 25, 20250.6t CO₂
KHYI
KLBXAngleton
154 miles36m
View Details
Nov 23, 20256.7t CO₂
KTEBTeterboro
KHYI
1,532 miles4h 18m
View Details
Nov 17, 20250.5t CO₂
KSATSan Antonio
KHYI
44 miles17m
View Details
Nov 13, 20250.5t CO₂
KHYI
KSATSan Antonio
44 miles21m
View Details
Nov 10, 20252.0t CO₂
KHYI
KOLVOlive Branch
587 miles1h 29m
View Details
Nov 4, 20250.5t CO₂
KHYI
KCXOHouston
150 miles31m
View Details
Oct 29, 20254.6t CO₂
KCRWCharleston
KHYI
1,097 miles3h 1m
View Details
Oct 29, 20250.6t CO₂
KFRRFront Royal
KCRWCharleston
184 miles36m
View Details
Oct 29, 20250.5t CO₂
CYHZHalifax
CYSJSaint John
120 miles25m
View Details
Sep 30, 20250.5t CO₂
KSATSan Antonio
KHYI
44 miles13m
View Details
Sep 26, 20254.8t CO₂
KRNOReno
KHYI
1,405 miles3h 10m
View Details
Sep 24, 20250.5t CO₂
KSATSan Antonio
KHYI
44 miles12m
View Details
Aug 27, 20250.5t CO₂
KSATSan Antonio
KHYI
44 miles13m
View Details
Jul 30, 20250.6t CO₂
KDFWDallas-Ft Worth
KHYI
213 miles37m
View Details
Jul 28, 20250.5t CO₂
KSATSan Antonio
KHYI
44 miles19m
View Details
Jul 19, 20254.0t CO₂
KPVUProvo
KHYI
1,057 miles2h 39m
View Details
Mar 23, 20252.9t CO₂
KBHMBirmingham
KHYI
700 miles2h 1m
View Details
Mar 23, 20253.5t CO₂
KTEBTeterboro
KBHMBirmingham
859 miles2h 24m
View Details
Mar 11, 20250.5t CO₂
KPWGWaco
KHYI
115 miles26m
View Details
Mar 8, 20250.5t CO₂
KSATSan Antonio
KHYI
44 miles14m
View Details
Jan 19, 20250.5t CO₂
KGLSGalveston
KHYI
185 miles34m
View Details
Jan 3, 20250.5t CO₂
KHYI
KRBORobstown
146 miles28m
View Details
Top Airports by Emissions
KHYI

KHYI

Total CO₂

43.5t

Total Visits

21

Avg CO₂/visit

2.1t

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

Teterboro

KTEB

Total CO₂

17.6t

Total Visits

3

Avg CO₂/visit

5.9t

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

Olive Branch

KOLV

Total CO₂

8.5t

Total Visits

3

Avg CO₂/visit

2.8t

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

Charleston

KCRW

Total CO₂

5.2t

Total Visits

2

Avg CO₂/visit

2.6t

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

Reno

KRNO

Total CO₂

4.8t

Total Visits

1

Avg CO₂/visit

4.8t

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

Provo

KPVU

Total CO₂

4.0t

Total Visits

1

Avg CO₂/visit

4.0t

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Page 1 of 3
Top Routes by Emissions
Teterboro

KTEB to KHYI1,533 miles

Total Flights

2

Avg CO₂/Flight

6.8t

Total Emissions

13.5t CO₂

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

KRNO to KHYI1,406 miles

Total Flights

1

Avg CO₂/Flight

4.8t

Total Emissions

4.8t CO₂

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

KCRW to KHYI1,097 miles

Total Flights

1

Avg CO₂/Flight

4.6t

Total Emissions

4.6t CO₂

Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Teterboro Olive Branch

KTEB to KOLV947 miles

Total Flights

1

Avg CO₂/Flight

4.1t

Total Emissions

4.1t CO₂

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

KPVU to KHYI1,058 miles

Total Flights

1

Avg CO₂/Flight

4.0t

Total Emissions

4t CO₂

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

KHYI to KISM997 miles

Total Flights

1

Avg CO₂/Flight

3.5t

Total Emissions

3.5t CO₂

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