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Summary of PM2.5 concentrations in Washington (excluding monitoring data from Nephelometers) before and during the wildfire episode, 2020.
| PM2.5 concentrations (μg/m3) | Mean | SD | Median | Range | Minimum | Maximum |
|---|---|---|---|---|---|---|
| before wildfire | 5.4 | 2.5 | 5.4 | 10.1 | 0.4 | 10.5 |
| during wildfire | 125.6 | 54.0 | 118.2 | 186.0 | 49.3 | 235.3 |
| increases | 120.2 | 54.9 | 112.8 | 191.8 | 43.1 | 234.9 |
