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Worst Air Quality ZIP Codes in Colorado

Top 50 worst air quality zip codes in america in Colorado. ZIP-level data from EPA Air Quality Index.

Top 50

#ZIP CodeCity / SuburbMedian AQI
180011Aurora55
280019Aurora55
380022Commerce City55
480024Derby55
580030Westminster55
680031Westminster55
780045Aurora55
880102Bennett55
980103Peoria55
1080136Comanche Creek55
1180202Denver55
1280203Denver55
1380204Denver55
1480205Denver55
1580206Denver55
1680207Denver55
1780209Denver55
1880210Denver55
1980211Denver55
2080212Denver55
2180216Denver55
2280218Denver55
2380219Denver55
2480220Denver55
2580221Berkley55
2680222Denver55
2780223Denver55
2880224Denver55
2980229Thornton55
3080230Denver55
3180231Denver55
3280233Thornton55
3380234Westminster55
3480236Denver55
3580237Denver55
3680238Denver55
3780239Denver55
3880241Thornton55
3980246Denver55
4080247Denver55
4180249Denver55
4280260Thornton55
4380264Denver55
4480266Denver55
4580290Denver55
4680293Denver55
4780294Denver55
4880601Brighton55
4980602Thornton55
5080603Lochbuie55

Methodology

This ranking is based on EPA Air Quality Index data, scoped to Colorado ZIP codes. Up to 50 ZIP codes are listed, ordered by median aqi. Data is refreshed periodically. See our methodology page for full details on data sources and update frequency.

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By Mubboo Editorial Team

Worst Air Quality ZIP Codes in Colorado is sourced from EPA Air Quality Index. All figures are aggregate public datasets.

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