There's a site that summarizes bad air quality days in LA from 1980 to 2025 [1] and I would encourage you to compare 1985 to 2025. Note: LA numbers are skewed by wildfire too. In the 2020s, "Very Unhealthy" days was basically 1 (with 1 9 that might or might not be wildfire related). 1980-1985 had 250-290 *Very Unhealthy" days.

Here's another chart showing air quality improvements [2].

I found a 1985 LA Times article that claims technology was responsible for a massive improvement in smog [3], particularly compared to 1973. And 2020-2025 is so much ridiculously better than then.

California was among the first states to adopt stricter vehicle emissions standards and to change fuel composition (eg removing lead) but the rest of the nation las largely caught up. National emissions standards and national summer fuel blends mean the gap between what CA has and does and what the rest of the nation has and does is now pretty small. That's was my point.

And if you think smog in the last decade was comparable in any way to any period 1960-2000 then you should really educate yourself about just how bad it was.

Lastly, coming on HN and alleging some kind of political bias without demonstrating how anything someone said is wrong really does nothing but betray your own biases. I looked through your comments and you so rarely add data but way more often level accusations of bias. That's not really welcome here.

[1]: https://www.almanac.com/environment/ev01b.php

[2]: https://www.kget.com/news/local-news/graph-shows-how-much-be...

[3]: https://www.latimes.com/archives/la-xpm-1985-11-05-me-4588-s...