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Yesterday's Air Quality Maps
OZONE AND PARTICLE POLLUTION
Color maps from the Air Quality Mapping showing recent peak ozone concentrations are available during the ozone season while particle maps are available year round.
Peak ozone maps are based on the highest 8-hour ozone concentrations measured at each ozone monitoring station. Peak ozone concentrations typically occur at different times at different monitors. Thus, peak maps do not represent a "snapshot" of air quality at any one moment. Rather, they are more like maps depicting cumulative rainfall, providing the viewer with an indication of how the air quality may have been at worst in his or her area during the course of the day.
Particle pollution maps are based on the midnight to midnight 24-hour average concentrations measured at each particle monitoring station. The maps show 24-hour average particle concentrations in accordance with EPA's Air Quality Index for particles.
OZONE POLLUTION |
PARTICLE POLLUTION |
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