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Look up air pollution and climate health information for any address in the Bay Area

Or explore one of these locations

Nitrogen Dioxide causes lung irritation and long-term respiratory issues.
View NO₂ near Sutter Street, SF
PM_2.5 increases risk of cardiovascular disease, preterm birth, and premature death.
View PM_2.5 near Helen St, Oakland
Carbon Dioxide emissions from human activity are the biggest driver of climate change.
View CO₂ near N 11th St, San Jose

Or explore one of these locations

San Francisco Bay Area

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The Future of Air Quality and Greenhouse Gas Measurement

How Aclima collects and makes sense out of the world's most advanced hyperlocal air quality data

Explore our methodology pages

Measurement and Data Verification

Using air pollution sensors installed on vehicle fleets, Aclima measures gases and particles in the air on each road segment at least twenty times during the measurement period.

Ensuring Data Quality

Aclima's measurements are thoroughly evaluated during and after collection. The final dataset is then validated and verified before maps are published.

Viewing Data on Maps

Combining data points so you can view Aclima’s measured air pollution levels by county, and in the context of measurements recorded by nearby regulatory air monitoring stations.