Airports / St. Charles, St. Charles County Smartt Airport

St. Charles, St. Charles County Smartt Airport(KSET)

Alton, United States

Last updated: Mar 15, 2026

Pro
Soon
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

Activity Summary

258.4
Tons CO2 Total
2.7
Avg CO2/Flight
94
Flights Total
Emissions Intensity0.01t CO₂/nm
244.2 tons CO2 in selected period

Airport Patterns

Emissions up 887% vs prior period — significantly busier than prior period

244t
Total CO₂
2.7t
Avg CO₂/flight
94
Flights
Operator Profile

Charter/owner classification not available for this airport's flights

Emissions
190%
89t → 258t CO₂
CO₂ Intensity
141%
1.1t → 2.7t per departure
Flight Count
52
42 → 94 flights
New Routes
54
231t CO₂ combined
Dropped Routes
27
Prior period only
New Aircraft
89
89 new tail numbers
Top Destinations
Long Beach22.7t CO₂
2 flights · avg 11.4t/flight
Anchorage16.0t CO₂
1 flight · avg 16.0t/flight
Dallas14.8t CO₂
5 flights · avg 3.0t/flight
Phoenix12.3t CO₂
1 flight · avg 12.3t/flight
Denver11.3t CO₂
2 flights · avg 5.7t/flight

Spikes

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

CO₂ Above Baseline

69t

Signals Detected

5

Highest Severity

High

HighSep 9, 2025 – Sep 15, 2025

Elevated activity Sep 9, 2025 – Sep 15, 2025 — 7 flights in 7 days vs baseline of 2

7 flights recorded in a 7-day window, exceeding the airport baseline of 2 flights per week by 236%.

12.1t CO₂

MediumAug 4, 2025 – Aug 10, 2025

Elevated activity Aug 4, 2025 – Aug 10, 2025 — 5 flights in 7 days vs baseline of 2

5 flights recorded in a 7-day window, exceeding the airport baseline of 2 flights per week by 140%.

15.1t CO₂

MediumSep 2, 2025 – Sep 8, 2025

Elevated activity Sep 2, 2025 – Sep 8, 2025 — 6 flights in 7 days vs baseline of 2

6 flights recorded in a 7-day window, exceeding the airport baseline of 2 flights per week by 188%.

17.6t CO₂

HighAug 14, 2025

Single high-emission departure N613JR → PANC on Aug 14, 2025 — 16.0t CO₂, 100% of day's total

Aircraft N613JR departing to PANC produced 16.0t CO₂, representing 100% of all airport emissions on Aug 14, 2025.

16.0t CO₂

LowSep 14, 2025 – Sep 30, 2025

16-day gap in recorded activity ending Sep 30, 2025

Airport had 16 consecutive days with zero recorded flights before activity resumed on Sep 30, 2025.

8.7t CO₂

Route Map

Top Routes by Emissions
AltonLong Beach

KSET to KLGB · 1,575 miles

Total Flights

2

Avg CO₂/Flight

11.4t

Total Emissions

22.7t CO₂

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

KSET to PANC · 2,917 miles

Total Flights

1

Avg CO₂/Flight

16.0t

Total Emissions

16.0t CO₂

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

KSET to KDAL · 553 miles

Total Flights

5

Avg CO₂/Flight

3.0t

Total Emissions

14.8t CO₂

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

KSET to KPHX · 1,258 miles

Total Flights

1

Avg CO₂/Flight

12.3t

Total Emissions

12.3t CO₂

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

KSET to KAPA · 772 miles

Total Flights

2

Avg CO₂/Flight

5.7t

Total Emissions

11.3t CO₂

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

KSET to KAUS · 730 miles

Total Flights

3

Avg CO₂/Flight

3.6t

Total Emissions

10.7t CO₂

May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Page 1 of 10
Aircraft Using This Airport
View All Aircraft
N613JRCharter·Bombardier Challenger 600
16.0t CO₂ · avg 16.0t/visit · 1 visit · Last seen 14 Aug 2025
N102JECharter·Gulfstream GIV
14.1t CO₂ · avg 14.1t/visit · 1 visit · Last seen 9 May 2025
N826RPCharter·Gulfstream GIV
12.3t CO₂ · avg 12.3t/visit · 1 visit · Last seen 1 Mar 2026
N875QSCharter·Cessna Citation Longitude
10.3t CO₂ · avg 10.3t/visit · 1 visit · Last seen 26 Dec 2025
N846QSCharter·Cessna Citation Longitude
9.0t CO₂ · avg 9.0t/visit · 1 visit · Last seen 8 Jun 2025
N502RP·Gulfstream G280
8.7t CO₂ · avg 8.7t/visit · 1 visit · Last seen 30 Sept 2025
N984BX·Dassault Falcon 900
8.5t CO₂ · avg 8.5t/visit · 1 visit · Last seen 4 Feb 2026
N929JHCharter·Bombardier Learjet 31
7.7t CO₂ · avg 7.7t/visit · 1 visit · Last seen 6 Sept 2025
N710VMCharter·Cessna Citation Longitude
7.5t CO₂ · avg 7.5t/visit · 1 visit · Last seen 11 Dec 2025
N343FXCharter·Embraer Praetor 500
7.5t CO₂ · avg 7.5t/visit · 1 visit · Last seen 7 Aug 2025
Page 1 of 9

Recent Flights

10 total flights recorded

Showing most recent flights — not filtered by viewing period