Airports / Union County Airport
Union County Airport(KMRT)
Marysville, United States
Last updated: Mar 26, 2026
Activity Summary
Airport Patterns
Emissions up 421% vs prior period — significantly busier than prior period
Charter/owner classification not available for this airport's flights
Spikes
Significant deviations from this airport's baseline in the selected period.
CO₂ Above Baseline
62t
Signals Detected
5
Highest Severity
High
Elevated activity Oct 27, 2025 – Nov 2, 2025 — 8 flights in 7 days vs baseline of 4
8 flights recorded in a 7-day window, exceeding the airport baseline of 4 flights per week by 109%.
15.8t CO₂
Elevated activity Nov 3, 2025 – Nov 9, 2025 — 11 flights in 7 days vs baseline of 4
11 flights recorded in a 7-day window, exceeding the airport baseline of 4 flights per week by 188%.
17.9t CO₂
Elevated activity Nov 13, 2025 – Nov 19, 2025 — 9 flights in 7 days vs baseline of 4
9 flights recorded in a 7-day window, exceeding the airport baseline of 4 flights per week by 136%.
17.4t CO₂
Single high-emission departure N479FX → KOPF on Nov 19, 2025 — 8.6t CO₂, 84% of day's total
Aircraft N479FX departing to KOPF produced 8.6t CO₂, representing 84% of all airport emissions on Nov 19, 2025.
8.6t CO₂
23-day gap in recorded activity ending Jun 25, 2025
Airport had 23 consecutive days with zero recorded flights before activity resumed on Jun 25, 2025.
2.7t CO₂
Route Map
KMRT to KVSF · 598 miles
Total Flights
30
Avg CO₂/Flight
1.7t
Total Emissions
50.8t CO₂
KMRT to KFRG · 524 miles
Total Flights
15
Avg CO₂/Flight
2.2t
Total Emissions
32.3t CO₂
KMRT to KCMH · 29 miles
Total Flights
20
Avg CO₂/Flight
1.0t
Total Emissions
19.2t CO₂
KMRT to KTEB · 490 miles
Total Flights
7
Avg CO₂/Flight
2.2t
Total Emissions
15.4t CO₂
KMRT to KPBI · 954 miles
Total Flights
2
Avg CO₂/Flight
5.2t
Total Emissions
10.5t CO₂
KMRT to KOPF · 1,005 miles
Total Flights
1
Avg CO₂/Flight
8.6t
Total Emissions
8.6t CO₂
Recent Flights
10 total flights recordedShowing most recent flights — not filtered by viewing period