I live in the north. When the reading is high I look out the window and can only see a short distance. When the reading is low I can see the western hills. There must be some degree of accuracy.

really bad today all the city monitors are in the red at 730.chengong and xi shan in the orange

Kunming is Spring City and clean air has been one of the market strategies.

Now, does anyone really believe those measurements are not manipulated. Heh!

duh! if they are manipulated they is doing it the wrong way by making readings higher. perhaps the mayor of a rival city is doing it. nahh!

The name "Spring City" was given long before the huge number of private cars existed in Kunming, and also long before the recent population boom.

It should be obvious that pollution is cause by people. Increase the population - increase the pollution.

population and the consumption of resources could be managed and maintained in equilibrium by the simple expedient of killing everyone who reaches the age of thirty. sound familiar? hey if we did a soylent green then no problems with meat and gmo soy.

yes, it sounds familiar. there was a star trek episode where the kids kill off all the adults. R.I.P Spock. Love you forever.

@Peter99. If you have a good view like AlPage48 or me, then you know the aqi matches up pretty well with how hazy it is. If it didn't, I wouldn't bother with aqi.

Of course they are manipulated by a fifty-sixty method here or there, nobody has said anyone was trying to change 1000 to 100.

Also "spring city" probably refers more to the climate rather than (in past low) level of pollution.

If you must choose between a polluted city with bad climate and a polluted city with better climate...