Air Quality Arena: A Large-Scale Multi-Region Ground Monitoring Dataset and Benchmark for Air Quality Forecasting with Time-Series Foundation Models

Short summary

Air Quality Arena (AQA) is a large-scale dataset and benchmark covering 6 pollutants across 7 countries over 3 years with 14,000+ station-pollutant series. It evaluates 11 time-series foundation models against classical baselines for short-term air quality forecasting. TSFMs consistently outperform classical methods in zero-shot settings, with the top model using a cross-modal architecture leveraging a vision foundation model. The dataset is publicly released.

• •AQA provides a large-scale multi-country air quality dataset with 14,000+ station-pollutant series
• •11 time-series foundation models benchmarked against classical baselines for air quality forecasting
• •TSFMs are effective zero-shot forecasters; top model uses a cross-modal vision-based architecture

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