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San Luis Obispo Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in San Luis Obispo

Last Updated: 2026-07-17 05:51:02 (Local Time)

location image
Live AQI
42AQI (US)
Air Quality is
Good
PM2.5 :  10 µg/m³
pm10 :  31 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level.webp in San Luis Obispo
fog

13 °C

Fog
Humidity
Humidity84 %
Wind Speed
Wind Speed4 km/h
UV Index
UV Index0
Last Updated: 2026-07-17 05:51:02 (Local Time)

Presently, San Luis Obispo ranks for having the good air quality among cities worldwide.

Map

San Luis Obispo

Major Air Pollutants

San Luis Obispo

PM₂.₅'s Icon

Particulate Matter(PM₂.₅)

10µg/m³

PM₁₀'s Icon

Particulate Matter(PM₁₀)

31µg/m³

CO's Icon

Carbon Monoxide(CO)

188ppb

SO₂'s Icon

Sulfur Dioxide(SO₂)

2ppb

NO₂'s Icon

Nitrogen Dioxide(NO₂)

6ppb

O₃'s Icon

Ozone(O₃)

19ppb

AQI Graph

Historical Air Quality Data

San Luis Obispo

24 Hours
AQI (US)
San Luis Obispo
AQI (US)
.
16-07-2026Time17-07-2026
30
Min. AQI (US)7:01am
52
Max. AQI (US)4:01pm

Want air quality data?

AQI (US) Trends - Annual Air Quality Changes

San Luis Obispo, California, United States

AQI (US)

San Luis Obispo's Locations

Real-time Air Pollution Level

locations
Status
AQI (US)
PM₂.₅(µg/m³)
PM₁₀(µg/m³)
Temp.(°C)
Humi.(%)
Good
42
10
33
13
84

United States's Metro Cities

Air Quality Index

Chicago City AQI

Chicago

300

temp.26°C
hum.71%
Los Angeles City AQI

Los Angeles

51

temp.20°C
hum.87%
Minneapolis City AQI

Minneapolis

50

temp.26°C
hum.79%
Nashville City AQI

Nashville

50

temp.25°C
hum.100%
New Orleans City AQI

New Orleans

59

temp.26°C
hum.94%
New York City City AQI

New York City

73

temp.23°C
hum.59%
San Francisco City AQI

San Francisco

44

temp.14°C
hum.84%
Washington City AQI

Washington

222

temp.26°C
hum.56%

Air Quality Calendar 2026

San Luis Obispo

2026
AQI (US)
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

Health Advice For People Living In

San Luis Obispo

0Cigarettes per day

Weekly 0 Cigarettes
Monthly 0 Cigarettes

Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI (US)

Air Purifier
Air PurifierTurn Off
Car Filter
Car FilterAdvisable
N95 Mask
N95 MaskAdvisable
Stay Indoor
Stay IndoorAdvisable

Prevent Health Problems: Understand Your Risks

San Luis Obispo

asthma due to air pollution in San Luis ObispoAsthma
heart due to air pollution in San Luis ObispoHeart Issues
allergy due to air pollution in San Luis ObispoAllergies
sinus due to air pollution in San Luis ObispoSinus
flu due to air pollution in San Luis ObispoCold/Flu
copd due to air pollution in San Luis ObispoChronic (COPD)
Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2026

United States

Analyze the real-time most air polluted cities in the country.

Most Polluted Cities Live Ranking 2026
World's Most PollutedCity Rankings (2025)
World's Most PollutedCountry Rankings(2025)
RankCityAQI Status

Standard Value

Follow

1.

Cicero, Illinois

383

Hazardous

17xabove Standard

2.

Toledo, Ohio

343

Hazardous

20xabove Standard

3.

Shorewood, Wisconsin

340

Hazardous

19xabove Standard

4.

Michigan City, Indiana

339

Hazardous

19xabove Standard

5.

Waukesha, Wisconsin

335

Hazardous

19xabove Standard

6.

Cary, Illinois

334

Hazardous

14xabove Standard

7.

Milwaukee, Wisconsin

333

Hazardous

19xabove Standard

8.

Appleton, Wisconsin

329

Hazardous

19xabove Standard

9.

Greendale, Wisconsin

319

Hazardous

18xabove Standard

10.

Tecumseh, Michigan

313

Hazardous

18xabove Standard

Last Updated: 17 Jul 2026, 12:54 PM

AQI City Rankings

Air Quality Solutions For San Luis Obispo

Explore the solutions of air quality monitoring & clean air.

Here are some applications that you can go through to find out the solutions.

Air Quality Monitor

Air Quality Monitor

Monitor the air quality
Air Quality Sensors

Air Quality Sensors

Sensors to measure the air quality
Fresh Air Machine

Fresh Air Machine

Clean the air you breathe
Car Cabin Filter

Car Cabin Filter

Purify the air in your car
N95 Mask

N95 Mask

Shield yourself from pollution
Prana Air offers the solutions of air quality monitoring and clean air machine for San Luis Obispo

Air Quality Solution For Offices

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Air Quality Solutions For Smart City

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Air Quality Solutions for Schools | Institutes

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Air Quality Solutions For Hotels

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Air Quality Solutions for Restaurants

Prana Air has the air quality solutions for restaurant, cafes, and gives you the power to know what your customers and staff breathe.

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Air Quality Solutions for RMC Plants

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Air Quality Solutions for Fitness Center

Prana Air provides the air quality solutions of pollution monitoring and fresh air for fitness center - gym.

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Air Quality Solutions for Parking Lot

A complete solution for air monitoring, data analysis, and fresh air solutions for enclosed car parking areas and car lots.

Prana Air offers the solutions of air quality monitoring and clean air machine for San Luis Obispo

Air Quality Solutions for Retail Stores

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets.

Prana Air offers the solutions of air quality monitoring and clean air machine for San Luis Obispo

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets

Prana Air provides the air quality solutions for airport. Gathering of many passengers is the main reasons of bad air quality in airport.

Prana Air offers the solutions of air quality monitoring and clean air machine for San Luis Obispo

Air Quality Solutions For Construction Sites

Prana Air offers air quality monitoring solutions for construction sites with data cloud storage, web-dashboard, mobile apps, TV display.

Prana Air offers the solutions of air quality monitoring and clean air machine for San Luis Obispo

Air Quality Solutions For Hospitals

Prana Air provides air quality monitoring and fresh air solutions for hospitals to ensure clean and healthy indoor air.

Prana Air offers the solutions of air quality monitoring and clean air machine for San Luis Obispo

Air Quality Solutions For Washroom | Bathroom

Improve washroom and bathroom air quality with Prana Air air quality monitoring devices and fresh air machine. Breathe easy and stay healthy.

Prana Air offers the solutions of air quality monitoring and clean air machine for San Luis Obispo

Air Quality Solutions for Banks

Prana Air provides air quality solutions of pollution monitoring and fresh air for banks and financial institutions.

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Air Quality Solutions for Cinema

Air quality solutions for cinema halls or theatres will help the customers to get the good experience, comfort and breathe clean air.

Prana Air offers the solutions of air quality monitoring and clean air machine for San Luis Obispo

Air Quality Solutions For Real Estates

Prana Air provides the air quality solutions of pollution monitoring and fresh air for real estates - residential and commercial.

San Luis Obispo's AQI Data Analytics Solutions

Air quality data monitoring platforms

Mobile AppMobile App
Smart TV AppSmart TV App
Web DashboardWeb Dashboard
APIAPI
WidgetsWidgets

Air Quality FAQs

at San Luis Obispo

Frequently Asked Questions About Air Quality

1. What is the current AQI (US) level in San Luis Obispo?

The current real-time AQI (US) level in San Luis Obispo is 42 (Good). This was last updated 2026-07-17 05:51:02 (Local Time).

2. When was the best AQI (US) level in San Luis Obispo in the last 24 hours?

The best AQI (US) level was 30 (Good) at 7:01 AM, Jul 16, 2026 (Local Time) during the last 24 hours.

3. When was the worst AQI (US) level in San Luis Obispo in the last 24 hours?

The worst AQI (US) level was 52 (Moderate) at 4:01 PM, Jul 16, 2026 (Local Time) during the last 24 hours.

4. What is the current trend of AQI (US) levels in San Luis Obispo during last 24 hours?

The AQI (US) levels in San Luis Obispo have been fluctuating throughout the last 24 hours. The levels have increased by highest 52 at 4:01 PM, Jul 16, 2026 (Local Time), lowest 30 at 7:01 AM, Jul 16, 2026 (Local Time).

5. What actions are recommended as per the current AQI (US) level in San Luis Obispo?

The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.

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