What is the air quality trend in South Lake Tahoe?

Over the past 20 days, South Lake Tahoe had an average AQI of 48 based on station measurements. The worst day was 2026-07-21 with AQI 84.

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

193h

PM2.5 Station

193h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-07	49	15–74	13.8 µg/m³	9h	1
2026-08-06	72	36–159	25.1 µg/m³	5h	1
2026-08-05	75	32–183	27.8 µg/m³	11h	1
2026-08-04	59	23–132	17.9 µg/m³	9h	1
2026-08-03	60	23–149	18.2 µg/m³	10h	1
2026-08-02	54	31–106	14.7 µg/m³	11h	1
2026-08-01	43	7–85	12.1 µg/m³	8h	1
2026-07-31	40	6–76	10.6 µg/m³	10h	1
2026-07-30	43	2–80	11.1 µg/m³	9h	1
2026-07-29	40	3–82	10.8 µg/m³	11h	1
2026-07-28	32	4–53	7.8 µg/m³	15h	1
2026-07-27	37	15–54	9.0 µg/m³	9h	1
2026-07-26	32	9–88	8.7 µg/m³	9h	1
2026-07-25	43	25–74	11.2 µg/m³	10h	1
2026-07-24	35	9–59	8.8 µg/m³	11h	1
2026-07-23	47	18–116	12.9 µg/m³	15h	1
2026-07-22	39	6–98	10.9 µg/m³	10h	1
2026-07-21	84	22–212	44.6 µg/m³	5h	1
2026-07-20	40	15–65	9.9 µg/m³	10h	1
2026-07-19	37	18–72	9.8 µg/m³	6h	1

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