AQIHistoryPM₂.₅PM₁₀COSO₂NO₂O₃
View aqi PageAQIView weather PageWeather
Live

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

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

Last Updated: 2026-08-18 00:21:01 (Local Time)

location image
Live AQI
52AQI (US)
Air Quality is
Moderate
PM2.5 :  13 µg/m³
pm10 :  23 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi moderate level.webp in San Luis Obispo
fog

14 °C

Fog
Humidity
Humidity100 %
Wind Speed
Wind Speed5.8 km/h
UV Index
UV Index0
Last Updated: 2026-08-18 00:21:01 (Local Time)
Rank755th

Currently, San Luis Obispo ranks 755th among the cities with the highest AQI levels in the world.

Map

San Luis Obispo

Major Air Pollutants

San Luis Obispo

PM₂.₅'s Icon

Particulate Matter(PM₂.₅)

13µg/m³

PM₁₀'s Icon

Particulate Matter(PM₁₀)

23µg/m³

CO's Icon

Carbon Monoxide(CO)

305ppb

SO₂'s Icon

Sulfur Dioxide(SO₂)

2ppb

NO₂'s Icon

Nitrogen Dioxide(NO₂)

4ppb

O₃'s Icon

Ozone(O₃)

26ppb

AQI Graph

Historical Air Quality Data

San Luis Obispo

24 Hours
AQI (US)
San Luis Obispo
AQI (US)
.
17-08-2026Time18-08-2026
42
Min. AQI (US)6:01am
71
Max. AQI (US)8:31pm

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.(%)
Moderate
54
14
23
14
100

United States's Metro Cities

Air Quality Index

Chicago City AQI

Chicago

45

temp.19°C
hum.90%
Los Angeles City AQI

Los Angeles

45

temp.21°C
hum.78%
Minneapolis City AQI

Minneapolis

52

temp.20°C
hum.79%
Nashville City AQI

Nashville

29

temp.20°C
hum.87%
New Orleans City AQI

New Orleans

32

temp.27°C
hum.85%
New York City City AQI

New York City

21

temp.21°C
hum.94%
San Francisco City AQI

San Francisco

46

temp.13°C
hum.100%
Washington City AQI

Washington

29

temp.25°C
hum.84%

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 On
Car Filter
Car FilterMust
N95 Mask
N95 MaskMust
Stay Indoor
Stay IndoorMust

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.

Omak, Washington

116

Poor

3xabove Standard

2.

Colville, Washington

82

Moderate

2xabove Standard

3.

Ashland, Oregon

75

Moderate

2xabove Standard

4.

The Dalles, Oregon

75

Moderate

2xabove Standard

5.

Chelan, Washington

73

Moderate

2xabove Standard

6.

Moses Lake, Washington

73

Moderate

2xabove Standard

7.

Grants Pass, Oregon

72

Moderate

1xabove Standard

8.

Stuart, Florida

72

Moderate

1xabove Standard

9.

Talent, Oregon

72

Moderate

1xabove Standard

10.

Belle Glade, Florida

72

Moderate

1xabove Standard

Last Updated: 18 Aug 2026, 07:24 AM

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

A complete solution for air quality monitoring, data analysis, and fresh air solutions in workplaces prioritizing employee's health and productivity.

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

Air Quality Solutions For Smart City

Prana Air smart city project provides air quality monitors, drones, outdoor air purifiers, and data dashboards solution to improve air quality.

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

Air Quality Solutions for Schools | Institutes

Prana Air provides the air quality solutions for schools by air monitoring & fresh air machine that help the students to breather clean air.

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

Air Quality Solutions For Hotels

Prana Air air quality solutions are suited for hotel businesses. The occupancy of hotels is the main reasons for bad air quality.

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

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.

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

Air Quality Solutions for RMC Plants

Prana Air provides air quality monitoring solutions for RMC plants. Improve compliance, protect workers and community, and reduce emissions.

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

Air Quality Solutions for Fitness Center

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

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

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.

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

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 52 (Moderate). This was last updated 2026-08-18 00:21:01 (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 42 (Good) at 6:01 AM, Aug 17, 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 71 (Moderate) at 8:31 PM, Aug 17, 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 71 at 8:31 PM, Aug 17, 2026 (Local Time), lowest 42 at 6:01 AM, Aug 17, 2026 (Local Time).

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

Current AQI (US) levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.

Recent AQI Blogs

Read the latest news

Here are some latest blogs that you can go through to find out more air pollution.

World Top 10 Hottest Cities Are All in India Again - May 2026

World Top 10 Hottest Cities Are All in India Again - May 2026

4 Jun 2026Gyane Haobijam
Delhi Air Quality 2026 vs 6-Year Historical PM2.5 Data

Delhi Air Quality 2026 vs 6-Year Historical PM2.5 Data

2 Jun 2026Gyane Haobijam
What 17 Years of Delhi Temperature Data Reveal About May's Heatwave Escalation

What 17 Years of Delhi Temperature Data Reveal About May's Heatwave Escalation

27 May 2026AQI Team
World Top Hottest Cities Belong to India - April 2026

World Top Hottest Cities Belong to India - April 2026

28 Apr 2026AQI Team
Construction Air Pollution: The Invisible Hazard Reshaping India's Urban Air

Construction Air Pollution: The Invisible Hazard Reshaping India's Urban Air

27 Mar 2026Gyane Haobijam
Kitchen Air Pollution: How Cooking Can Spike Your Indoor AQI

Kitchen Air Pollution: How Cooking Can Spike Your Indoor AQI

17 Mar 2026Gyane Haobijam
Mumbai Air Quality Comparison of 2025 Vs 2026 (Jan-Feb)

Mumbai Air Quality Comparison of 2025 Vs 2026 (Jan-Feb)

14 Feb 2026Gyane Haobijam
Why AQI Standards Vary Across the World - And Why Air Quality Index Matters More Than Ever

Why AQI Standards Vary Across the World - And Why Air Quality Index Matters More Than Ever

12 Feb 2026Navya
Why Winter Suffocates and Monsoon Saves Delhi Air Quality 2025?

Why Winter Suffocates and Monsoon Saves Delhi Air Quality 2025?

2 Feb 2026Gyane Haobijam
Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

1 Feb 2026Gyane Haobijam
Prana Air Logo

Prana Sense

Air Quality Monitor

Air Quality Index depicts the extent of air pollution at a particular location.

Prana Air Ambient Air Quality Monitor - most realiable outdoor aqi monitoringPrana Air Ambient Air Quality Monitor - most realiable outdoor aqi monitoring
Prana Air Logo

Pocket PM

Air Quality Monitor

Know the air quality around you wherever you are with the Pocket monitor to get instant air quality insights.

Prana Air Pocket PM2.5 Air Quality Monitor - portable, smallest and afforablePrana Air Pocket PM2.5 Air Quality Monitor - portable, smallest and afforable
Prana Air Logo

Cair +

Indoor Air Quality Monitor

Track indoor air quality with advanced connectivity and portability for real-time air quality data.

Prana Air Cair+ Indoor Air Quality Monitor for home, office or institutesPrana Air Cair+ Indoor Air Quality Monitor for home, office or institutes