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Grid value range
Colored dots are live monitoring readings; the shaded overlay is the model's grid-wide prediction for the current pollutant.
Why monthly averages, not a single hour
A Low Emission Zone boundary should be drawn on where pollution is structurally worst across the smog season, not on one hour's weather-driven snapshot. Each map below averages the model's hourly prediction across every hour with monitoring data in that month.
All-hours = full monthly average (use this for boundary decisions). Rush hour (07-10, 17-20) vs. off-peak shows whether a hotspot is traffic-driven or persistent. Worst days = the 10 highest-pollution days that month (use for severity framing, not boundaries).
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Sun
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Full-day average (all reporting hours) for the selected pollutant and date.