| State/population of city | City | % days Air Quality Index ranked good |
| AZ (41,938) | |
| NM (62,203) | |
| VA (197,790) | |
| WY (49,644) | |
| WY (53,011) | |
| CA (72,585) | |
| NV (52,457) | |
| ID (50,730) | |
| CA (151,060) | |
| CA (54,593) | |
| MT (56,690) | |
| CO (102,121) | |
| HI (371,657) | |
| | State/population of city | City | % days Air Quality Index ranked good |
| MT (89,847) | |
| IA (50,731) | |
| CA (54,548) | |
| CA (147,595) | |
| WA (67,171) | |
| NY (61,821) | |
| ND (55,532) | |
| TX (173,627) | |
| SC (96,650) | |
| FL (47,814) | |
| CA (103,621) | |
| CA (75,402) | |
|