I've found <a href="http://www.airnow.gov" rel="nofollow">http://www.airnow.gov</a> very helpful and faster to load than the Purple Air map. They also have a simple but efficient app.<p>Airnow's map is slow to load, but shows smoke, air monitors (including the Purple Air ones^[footnote]), and fires all at once: <a href="https://fire.airnow.gov/?lat=37.40&lng=-122.077&zoom=10#" rel="nofollow">https://fire.airnow.gov/?lat=37.40&lng=-122.077&zoom=10#</a><p>A less detailed, fast, static map for the SF Bay Area is available at <a href="http://www.baaqmd.gov" rel="nofollow">http://www.baaqmd.gov</a>.<p>Last, but not least, there is a forecast of surface-level smoke available at <a href="https://hwp-viz.gsd.esrl.noaa.gov/smoke/" rel="nofollow">https://hwp-viz.gsd.esrl.noaa.gov/smoke/</a>. I found it from <a href="https://twitter.com/NWSBayArea" rel="nofollow">https://twitter.com/NWSBayArea</a>, which is a good source of news for the Bay Area.<p>[footnote]: To make the numbers match, I had to set PurpleAir to show One-Hour Averages with the LRAPA scoring. See <a href="https://imgur.com/a/d6yFtow" rel="nofollow">https://imgur.com/a/d6yFtow</a>.