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San Diego Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in California

Last Updated: 2025-08-26 12:10:33 PM (Local Time)

Live AQI

59(AQI-US)

Air Quality is

Moderate

pm10 : 35 µg/m³

PM2.5 : 14 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

21 °C

Last Updated: 2025-08-26 12:10:33 PM (Local Time)

Map

San Diego

Major Air Pollutants
San Diego

Particulate Matter(PM2.5)

14µg/m³

Particulate Matter(PM10)

35µg/m³

Carbon Monoxide(CO)

2ppb

Sulfur Dioxide(SO2)

0ppb

Nitrogen Dioxide(NO2)

9ppb

Ozone(O3)

23ppb

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AQI Graph

Historical Air Quality Data
San Diego

24 Hours

AQI

San Diego

AQI

25-08-2025Time26-08-2025

Time	San Diego
12 PM	57
01 PM	57
02 PM	57
03 PM	57
04 PM	57
05 PM	56
06 PM	55
07 PM	52
08 PM	54
09 PM	53
10 PM	55
11 PM	49
12 AM	47
01 AM	48
02 AM	48
03 AM	47
04 AM	49
05 AM	50
06 AM	51
07 AM	52
08 AM	53
09 AM	55
10 AM	56
11 AM	58
12 PM	59

Min.at 12:10 AM on 26th Aug

Max.at 12:10 PM on 26th Aug

Want air quality data?

AQI Trends - Annual Air Quality Changes
San Diego, California, United States

AQI

Year

AQI

AQI	AQI
Mar 2025	33
Apr 2025	42
May 2025	47
Jun 2025	50
Jul 2025	41
Aug 2025	54

Annual AQI Trends

2025

46AQI

Overall Annual Percentage (%) change of AQI in (2025 to 2025)

NaN%

Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedAugust, 202554AQI

Least PollutedMarch, 202533AQI

* This data analysis is from year 2025 - 2025

San Diego's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

Carmel Mountain Ranch

Moderate

Moderate

Moderate

Moderate

Moderate

Air Quality Calendar 2025
San Diego

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan -	2 Jan -	3 Jan -	4 Jan -
5 Jan -	6 Jan -	7 Jan -	8 Jan -	9 Jan -	10 Jan -	11 Jan -
12 Jan -	13 Jan -	14 Jan -	15 Jan -	16 Jan -	17 Jan -	18 Jan -
19 Jan -	20 Jan -	21 Jan -	22 Jan -	23 Jan -	24 Jan -	25 Jan -
26 Jan -	27 Jan -	28 Jan -	29 Jan -	30 Jan -	31 Jan -	1 Feb -

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan -	27 Jan -	28 Jan -	29 Jan -	30 Jan -	31 Jan -	1 Feb -
2 Feb -	3 Feb -	4 Feb -	5 Feb -	6 Feb -	7 Feb -	8 Feb -
9 Feb -	10 Feb -	11 Feb -	12 Feb -	13 Feb -	14 Feb -	15 Feb -
16 Feb -	17 Feb -	18 Feb -	19 Feb -	20 Feb -	21 Feb -	22 Feb -
23 Feb -	24 Feb -	25 Feb -	26 Feb -	27 Feb -	28 Feb -	1 Mar -

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb -	24 Feb -	25 Feb -	26 Feb -	27 Feb -	28 Feb -	1 Mar -
2 Mar -	3 Mar -	4 Mar -	5 Mar -	6 Mar -	7 Mar -	8 Mar -
9 Mar -	10 Mar -	11 Mar -	12 Mar -	13 Mar -	14 Mar -	15 Mar -
16 Mar -	17 Mar -	18 Mar -	19 Mar -	20 Mar -	21 Mar -	22 Mar -
23 Mar -	24 Mar -	25 Mar -	26 Mar 25	27 Mar 25	28 Mar 34	29 Mar 44
30 Mar 44	31 Mar 28	1 Apr 31	2 Apr 36	3 Apr 38	4 Apr 32	5 Apr 35

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 44	31 Mar 28	1 Apr 31	2 Apr 36	3 Apr 38	4 Apr 32	5 Apr 35
6 Apr 32	7 Apr 41	8 Apr 52	9 Apr 52	10 Apr 52	11 Apr 55	12 Apr 60
13 Apr 58	14 Apr 56	15 Apr 46	16 Apr 41	17 Apr 26	18 Apr 27	19 Apr 38
20 Apr 50	21 Apr 54	22 Apr 50	23 Apr 44	24 Apr 41	25 Apr 38	26 Apr 25
27 Apr 21	28 Apr 24	29 Apr 41	30 Apr 53	1 May 42	2 May 35	3 May 35

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 21	28 Apr 24	29 Apr 41	30 Apr 53	1 May 42	2 May 35	3 May 35
4 May 34	5 May 32	6 May 44	7 May 47	8 May 51	9 May 54	10 May 52
11 May 55	12 May 53	13 May 33	14 May 38	15 May 52	16 May 55	17 May 47
18 May 34	19 May 48	20 May 58	21 May 57	22 May 60	23 May 59	24 May 53
25 May 49	26 May 47	27 May 43	28 May 44	29 May 40	30 May 48	31 May 60

June

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
1 Jun 53	2 Jun 46	3 Jun 31	4 Jun 30	5 Jun 30	6 Jun 29	7 Jun 34
8 Jun 37	9 Jun 44	10 Jun 49	11 Jun 47	12 Jun 52	13 Jun 58	14 Jun 55
15 Jun 56	16 Jun 61	17 Jun 63	18 Jun 64	19 Jun 60	20 Jun 59	21 Jun 59
22 Jun 58	23 Jun 58	24 Jun 63	25 Jun 55	26 Jun 51	27 Jun 52	28 Jun 50
29 Jun 48	30 Jun 41	1 Jul 42	2 Jul 42	3 Jul 44	4 Jul 44	5 Jul 58

July

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Jun 48	30 Jun 41	1 Jul 42	2 Jul 42	3 Jul 44	4 Jul 44	5 Jul 58
6 Jul 54	7 Jul 56	8 Jul 55	9 Jul 45	10 Jul 46	11 Jul 55	12 Jul 51
13 Jul 47	14 Jul 42	15 Jul 37	16 Jul 32	17 Jul 27	18 Jul 27	19 Jul 39
20 Jul 45	21 Jul 37	22 Jul 28	23 Jul 27	24 Jul 32	25 Jul 25	26 Jul 23
27 Jul 26	28 Jul 29	29 Jul 39	30 Jul 50	31 Jul 53	1 Aug 53	2 Aug 46

August

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Jul 26	28 Jul 29	29 Jul 39	30 Jul 50	31 Jul 53	1 Aug 53	2 Aug 46
3 Aug 49	4 Aug 62	5 Aug 66	6 Aug 63	7 Aug 62	8 Aug 57	9 Aug 54
10 Aug 56	11 Aug 54	12 Aug 58	13 Aug 58	14 Aug 58	15 Aug 52	16 Aug 38
17 Aug 42	18 Aug 48	19 Aug 47	20 Aug 50	21 Aug 56	22 Aug 59	23 Aug 57
24 Aug 54	25 Aug 51	26 Aug -	27 Aug -	28 Aug -	29 Aug -	30 Aug -
31 Aug -	1 Sep -	2 Sep -	3 Sep -	4 Sep -	5 Sep -	6 Sep -

Most Polluted Cities 2025
United States

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

Most Polluted Cities Live Ranking 2025

World's Most PollutedCity Rankings (2024)

World's Most PollutedCountry Rankings(2024)

RankCityAQIAQI Status

Standard Value

Soda Springs, United States

Poor

7xabove Standard

Evanston, United States

Moderate

6xabove Standard

Jackson, United States

Kelly, United States

Boulder, United States

Moderate

5xabove Standard

Daniel, United States

Moderate

5xabove Standard

Pinedale, United States

Moderate

5xabove Standard

Big Piney, United States

Moderate

5xabove Standard

Galena Park, United States

Moderate

4xabove Standard

10.

West Yellowstone, United States

Moderate

4xabove Standard

Last Updated: 26 Aug 2025, 05:17 PM

AQI City Rankings

Air Quality Solutions For San Diego
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

Monitor the air quality

Air Quality Sensors

Sensors to measure the air quality

Fresh Air Machine

Clean the air you breathe

Car Cabin Filter

Purify the air in your car

N95 Mask

Shield yourself from pollution

air quality solutions for offices for San Diego

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.

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.

air quality solutions for institutes for San Diego

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.

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.

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.

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.

Air Quality Solutions for Fitness Center

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

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.

Air Quality Solutions for Retail Stores

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

air quality solutions for airport for San Diego

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.

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.

Air Quality Solutions For Hospitals

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

air quality solutions for bathroom for San Diego

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.

Air Quality Solutions for Banks

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

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.

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 Diego's AQI Data Analytics Solutions
Air quality data monitoring platforms

Mobile App

Smart TV App

Web Dashboard

API

Widgets

Mobile App

Empower Your Decisions with Reliable Data

Get it onApp Store

Get it onGoogle Play

Your area’s real-time data with detailed parameters.

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Air Quality FAQs
at San Diego

Frequently Asked Questions About Air Quality

What is the current AQI level in San Diego?

The current real-time AQI level in San Diego is 59 (Moderate). This was last updated 2025-08-26 12:10:33 PM (Local Time).

When was the best AQI level in San Diego in the last 24 hours?

The best AQI level was 47 (Good) at 12:10 AM (Local Time) during the last 24 hours.

When was the worst AQI level in San Diego in the last 24 hours?

The worst AQI level was 59 (Moderate) at 12:10 PM (Local Time) during the last 24 hours.

What is the current trend of AQI levels in San Diego during last 24 hours?

The AQI levels in San Diego have been fluctuating throughout the last 24 hours. The levels have increased by highest 59 at 12:10 PM (Local Time), lowest 47 at 12:10 AM (Local Time).

What actions are recommended as per the current AQI level in San Diego?

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