The afternoon Portland hit 115 degrees

Portland International Airport reported 115.0 F at 3:53 PM on 28 June 2021, with a dew point of 53.1 F. Here is the full hourly record for that day.

What the record shows

At 3:53 PM PDT the station at Portland International Airport (USW00024229), 6.4 mi from the reference point, reported 115.0°F with a dew point of 53.1°F and relative humidity of 13%. Wind was from 070° at 16.1 mph. Sea level pressure was 1001.1 hPa.

Across the local day the station's hourly observations ranged from 75.9°F to 115.0°F. The highest gust reported that day was 25.3 mph. The chart above plots every hourly observation the station filed, midnight to midnight in local time.

Why this date

This date is frequently requested for heat-exposure matters in the Pacific Northwest. The record carries both the air temperature and the dew point for every reported hour, which is what a heat-index calculation requires. The hourly series also shows the rate of change through the day rather than a single daily figure.

Limits of this record

These are hourly observations, not the day's certified extremes. A true peak can fall between scheduled readings, so a published daily maximum may differ from the highest value shown here.

This page reports a single station. A full report queries neighbouring stations for the same moment and prints each one separately, along with its distance and the offset between its observation time and the time requested.