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Air Quality
On 9/17/2020 12:37 PM, Tom Kunich wrote:
On Thursday, September 17, 2020 at 10:05:13 AM UTC-7, wrote: On Tue, 15 Sep 2020 13:03:37 -0700 (PDT), jbeattie wrote: https://aqicn.org/city/usa/oregon/portland/ It varies by the hour. We're hazardous but trending toward unhealthy. Hmmm. Maybe I'll go for an unhealthy ride this evening. It may even get to "unhealthy for sensitive groups" around 6:00 -- and then back to hazardous. -- Jay Beattie. Thursday morning (9/17/2020), Portland air still looks really bad: https://www.purpleair.com/map?opt=1/i/mAQI/a10/cC0#9.14/45.4645/-122.6204 The hourly variations in smoke levels seem to be about 2.5 times. Click on any of the purple dots and you'll get an AQI history graph for the previous four days. Satellite photo still shows considerable smoke over most of the left coast: https://www.star.nesdis.noaa.gov/GOES/conus_band.php?sat=G17&band=GEOCOLOR&length=12 Even Indiana is seeing some smoke: https://gispub.epa.gov/airnow/ SF Bay coastal area were fairly clear yesterday, but have become worse today: https://www.purpleair.com/map?opt=1/i/mAQI/a10/cC0#8.87/37.3508/-122.0335 Calif Sierras are as bad as Portland: https://www.purpleair.com/map?opt=1/i/mAQI/a10/cC0#6.89/38.138/-120.995 At AQI = 250 or worse, I would think twice about doing any riding. When we were running AQI = 150, I was coughing a little, had a continuous mild headache, was regularly clearing my sinuses, and was using eyedrops to reduce burning eye problems. Yesterday I took a short ride out to Alameda and back. The air was as good as you could want. The map of West Coast air quality in my newspaper yesterday noted that depending on local wind speed and direction some adjacent areas have marked air quality differences. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
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