What is the air quality trend in South Lake Tahoe?

Over the past 21 days, South Lake Tahoe had an average AQI of 38 based on station measurements. The worst day was 2026-05-22 with AQI 59.

How is South Lake Tahoe air quality measured?

Air quality in South Lake Tahoe is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for South Lake Tahoe, United States

Name: South Lake Tahoe Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near South Lake Tahoe, United States.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

236h

PM2.5 Station

236h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	22	6–45	5.2 µg/m³	7h	1
2026-05-28	38	6–63	9.8 µg/m³	13h	1
2026-05-27	55	12–109	16.8 µg/m³	14h	1
2026-05-26	49	16–96	14.2 µg/m³	10h	1
2026-05-25	35	16–57	8.4 µg/m³	13h	1
2026-05-24	35	7–82	9.5 µg/m³	10h	1
2026-05-23	55	30–155	16.3 µg/m³	9h	1
2026-05-22	59	21–122	17.6 µg/m³	16h	1
2026-05-21	43	24–78	11.2 µg/m³	16h	1
2026-05-20	38	21–72	9.4 µg/m³	12h	1
2026-05-19	54	6–104	15.7 µg/m³	15h	1
2026-05-18	40	4–95	10.8 µg/m³	13h	1
2026-05-17	52	9–115	14.8 µg/m³	12h	1
2026-05-16	29	2–61	7.5 µg/m³	8h	1
2026-05-15	33	9–118	9.1 µg/m³	12h	1
2026-05-14	36	17–56	8.8 µg/m³	9h	1
2026-05-13	31	10–53	7.5 µg/m³	8h	1
2026-05-12	35	9–72	8.9 µg/m³	13h	1
2026-05-11	30	5–65	7.3 µg/m³	12h	1
2026-05-10	27	15–42	6.5 µg/m³	11h	1
2026-05-09	20	13–26	4.9 µg/m³	3h	1

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