City-level climate data, ready for decisions
COzero Atlas combines emissions tracking, air quality monitoring, and sustainability scoring across major US cities — built for planners, policymakers, and climate teams.
- Cities tracked
- 8
- Data points
- 2.4K+
- Updated
- Daily
Live city snapshot
Seattle, WA
AQI
42
Sustainability
82/100
Emissions
8.4Mt
-4.1% YoY
Risk score
28Low
Sustainability trend
+3.2% YoY
Cities tracked
8
Avg. sustainability
71/100
Total emissions
190.1Mt CO₂
Cities improving
8/8
US city coverage
Select any tracked city to view emissions, air quality, and sustainability metrics.
New York, NY
New York · Pop. 8.3M
- AQI
- 58
- Sustainability
- 74/100
- CO₂ emissions
- 52.4 Mt
- Risk score
- 42
City comparisons
Benchmark sustainability performance and per-capita emissions across tracked metros.
Top sustainability scores
Network-wide trends
Aggregate emissions and air quality trajectories across all tracked cities, 2019–2025.
Total emissions
Combined CO₂ output (kt) across tracked metros
Average AQI
Mean air quality index across tracked cities
Start exploring environmental data
Access emissions, air quality, and sustainability metrics for every city in the Atlas network.