Expand Donora 1 Sw, US Donora 1 Sw, US Donora 1 SwChange location Precipitation stripe Data sourcesLocation Warming anomaly — Heating score 2 Record high 1930 Recent observations View Loading… Climate stripe Add Chart all dataGrouping Year Year and month Month Day Axes Aggregation Grouping days Half-yearly Quarterly Monthly (28 days) Fortnightly Weekly Threshold (%) Override preset threshold Reset Download Loading… Change location