Our neighbor to the south is lucky enough to be the first Chinese city (as far as I know) to publish hourly updates of air quality, freely available to all on their website. This practice is now standard in most countries, and I hope that Beijingers can soon also get such valuable information. Right now, we have the US Embassy’s famous Beijingair feed, which publishes PM2.5 and ozone levels from their embassy compound behind the flower market.