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Summary of PM 2.5 Concentrations in Washington Before and During the Wildfires, 2020
| PM2.5 concentrations (μg/m3) | ||||||
|---|---|---|---|---|---|---|
| Mean | SD | Median | Range | Minimum | Maximum | |
| Baseline (2019) | 3.1 | 0.8 | 3.0 | 3.6 | 1.4 | 5.0 |
| During the wildfire smoke episode | 100.1 | 28.5 | 98.9 | 165.0 | 50.5 | 215.5 |
| Increases | 97.1 | 28.5 | 94.5 | 165.7 | 46.5 | 212.3 |
