Seattle's Perfect Summer: Fact or Fiction?

Fact!

• The number of perfect weather days in Seattle is increasing on average every year!
• Perfect weather days tend to occur more in the summer time when the rain dries up
• Air quality issues of summer wildfires have not greatly impacted the number of perfect days
• Weekends do not tend to be more rainy than weekdays in the summer time

Data: Talk about data and where obtained

• NOAA's weather dataset measured at Seattle-Tacoma Airport (SeaTac) spanning from 1948 to present, containing 50 variables including both max and min temperature and precipitation: Seattle Daily
• EPA's pre-generated air quality dataset with the air quality index by day for every county in the US and spanning from 01.01.1980 to 11.27.2018: AQI
• Seattle events data: Seattle Special Events Data

working definition of perfect weather

• Temperature Range between 55 and 85 degrees F
• Air Quality index below 100 which is the max range for moderate air quality before the air quality becomes unhealthy for sensitive groups
• Precipitation less than or equal to 0.05 inches per day

• 428 perfect weather days fall on weekends, which is 27.9% of the perfect weather days

• 22 events dates coincide with perfect weather dates and that these dates occur between June 1 and September 30

Follow up analysis could compare other Pacific Northwest cities and/or cities around the US to see if Seattle's summer is really special.