TEMPO L2 — Hourly Air Quality (NO2, O3, HCHO, AOD)

Hourly daytime air-quality retrievals over North America from the TEMPO geostationary instrument (operational 2023+). NO2, O3, HCHO, and AOD at ~2 km × 4.75 km resolution. Underutilized; closes the air-quality advisory head for UC-045 with no model retraining required.

Provider	NASA / Smithsonian Astrophysical Observatory
Delivery mode	stream
CNR score	76
Cadence	PT1H
Origin	https://tempo.si.edu/