SmogRank / United States / Texas / Cedar Park

Cedar Park, month by month

Cedar Park has a measured daily mean on 453 days since 20 June 2025. Its worst month was July 2026, at 55 US AQI (11.2 µg/m³), 1,069th of 2,784 cities on that month's world ranking. Its cleanest was November 2025, at 23 US AQI (4.1 µg/m³).

Every month since 2025

202643 so far273 days measured1,911th of 2,791 in the world
Jan32#2,199Feb33#2,447Mar32#2,563Apr49#1,241May38#1,681Jun52#699Jul55#1,069Aug49#1,219Sep43#1,079Oct32#1,886
2025too few days for a mean (a year needs 256)180 days measured
JanFebMarAprMayJun11 daysJul52#1,361Aug41#2,018Sep40#1,612Oct37#1,326Nov23#2,558Dec29#2,652
Each square is a month's mean PM2.5 in US AQI from Cedar Park's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Cedar Park marked; each year, the year's. A dashed square is the running month, so far.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Months without a mean, and why

1 month
MonthWhy
Jun 202511 of 30 days measured; a month needs 21.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Cedar Park's worst months

MonthUS AQIDays measuredWorld rankEpisode
July 2026 5511.2 µg/m³31 of 311,069thof 2,784–
June 2026 529.7 µg/m³29 of 30699thof 2,497–
July 2025 529.6 µg/m³28 of 311,361stof 2,889–
April 2026 498.9 µg/m³30 of 301,241stof 2,941Southern United States and Mexico, April 2026
August 2026 498.9 µg/m³24 of 311,219thof 2,896–
September 2026 437.7 µg/m³30 of 301,079thof 2,981–

Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.

Cedar Park's worst days

DayUS AQIEpisode
28 Apr 2026 8728.5 µg/m³Southern United States and Mexico, April 2026
27 Apr 2026 8427.0 µg/m³Southern United States and Mexico, April 2026
26 Apr 2026 8024.5 µg/m³Southern United States and Mexico, April 2026
16 Sept 2026 7723.1 µg/m³–
25 Apr 2026 7622.5 µg/m³Southern United States and Mexico, April 2026
15 Sept 2026 7622.4 µg/m³–
29 Jun 2026 7019.4 µg/m³–
19 Jul 2026 7019.2 µg/m³–
18 Jul 2026 6919.0 µg/m³–
25 Jul 2026 6818.3 µg/m³–

Daily means, the highest since 20 Jun 2025; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.

Use this history

SmogRank, PM2.5 monthly and daily means, Cedar Park, United States, 20 Jun 2025 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/cedar-park/history (accessed 12 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Cedar Park now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 20:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).