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California Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-11-05 06:23:32 AM (Local Time)

location image
Live AQI
44(AQI-US)
Air Quality is
Good
pm10 :  25 µg/m³
PM2.5 :  10 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level.webp in California
clear

19 °C

Clear
Humidity
Humidity70 %
Wind Speed
Wind Speed10 km/h
UV Index
UV Index0
Last Updated: 2025-11-05 06:23:32 AM (Local Time)
Map

California

Major Air Pollutants

California

PM2.5's Icon

Particulate Matter(PM2.5)

10µg/m³

PM10's Icon

Particulate Matter(PM10)

25µg/m³

CO's Icon

Carbon Monoxide(CO)

215ppb

SO2's Icon

Sulfur Dioxide(SO2)

1ppb

NO2's Icon

Nitrogen Dioxide(NO2)

9ppb

O3's Icon

Ozone(O3)

41ppb

AQI Graph

Historical Air Quality Data

California

24 Hours
AQI
California
AQI
.
03-11-2025Time04-11-2025
40
Min.at 8:04 AM on 4th Nov
50
Max.at 9:04 PM on 3rd Nov

Want air quality data?

Download 2024 Annual Data

World Air Quality Report

Globe

California's Cities

Real-time Air Pollution Level

Location
Status
AQI
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Good
22
4
6
18
73
Good
28
5
19
22
61
Good
14
2
15
21
56
Moderate
93
32
33
21
61
Good
33
6
8
14
93
Good
28
5
8
19
65
Good
17
3
12
22
61
Good
44
8
22
16
75
Moderate
58
11
40
21
36
Good
46
8
16
17
63
Good
28
5
16
18
68
Good
29
4
31
23
41
Good
48
4
54
25
37
Good
39
7
23
25
26
Good
17
3
13
27
12
Good
22
4
6
15
87
Good
22
4
7
19
65
Good
50
9
14
18
73
Good
28
5
13
22
14
Good
40
7
19
22
14
Moderate
55
11
62
32
11
Moderate
54
10
33
32
19
Good
44
8
27
16
75
Moderate
69
19
54
21
59
Moderate
52
7
56
32
19
Good
50
9
29
32
19
Moderate
56
12
26
17
78
Good
33
6
16
17
75
Moderate
57
13
24
17
78
Moderate
94
32
34
20
70
Good
28
5
10
27
18
Good
22
4
8
18
34
Good
22
4
9
19
68
Moderate
57
12
28
31
13
Moderate
62
15
29
20
71
Good
30
6
10
18
66
Moderate
56
12
56
25
40
Good
14
2
15
18
68
Good
33
6
10
21
57
Moderate
94
32
36
19
70
Good
17
3
7
19
65
Good
50
9
36
25
42
Good
20
4
8
19
68
Moderate
56
12
30
19
73
Good
33
6
8
15
90
Good
24
3
26
27
18
Good
22
4
10
21
60
Good
50
10
29
26
38
Moderate
94
32
35
19
70
Moderate
55
11
23
17
78
Good
45
4
49
25
37
Moderate
57
12
28
22
61
Good
44
8
38
32
19
Moderate
53
10
20
17
72
Good
28
5
16
22
61
Good
28
5
9
18
73
Good
39
7
8
16
90
Good
17
3
8
19
63
Good
22
4
6
15
87
Moderate
66
17
34
17
75
Moderate
94
32
52
19
70
Good
17
3
9
22
61
Moderate
58
13
44
25
40
Good
17
3
6
21
43
Good
39
7
10
14
89
Good
17
3
12
19
73
Moderate
58
13
54
25
41
Moderate
88
29
32
21
61
Good
39
7
13
22
61
Moderate
97
34
41
19
70
Good
17
3
12
18
68
Moderate
93
32
52
23
50
Moderate
55
11
22
17
78
Good
17
3
15
18
68
Good
50
9
10
20
59
Good
22
4
5
17
88
Moderate
68
18
70
25
42
Good
28
5
8
18
73
Good
22
4
6
18
68
Good
32
3
35
24
12
Good
22
4
8
17
65
Good
33
6
13
18
68
Moderate
92
31
50
19
70
Moderate
51
2
56
26
35
Moderate
56
12
38
31
13
Good
39
7
13
21
43
Moderate
57
12
46
25
39
Good
28
5
9
20
13
Good
39
7
28
27
38
Good
38
4
41
17
75
Moderate
92
31
38
21
61
Good
17
3
8
25
26
Good
28
5
9
17
65
Moderate
72
20
51
24
18
Moderate
66
17
27
17
34
Good
33
6
15
14
23
Good
35
6
15
21
58
Good
17
3
5
15
87
Good
50
9
25
26
18
Good
17
3
18
20
58
Poor
102
36
35
18
77
Good
44
8
24
19
70
Good
28
5
12
20
13
Moderate
88
29
31
20
66
Moderate
89
30
51
19
69
Good
22
4
6
22
53
Good
26
3
28
13
26
Moderate
58
13
49
24
40
Good
17
3
8
18
34
Good
45
9
18
14
23
Good
33
4
36
24
41
Good
50
4
54
25
37
Moderate
58
13
53
25
41
Good
37
7
8
15
91
Moderate
56
12
24
31
13
Good
46
3
50
24
40
Good
48
9
45
24
41
Moderate
55
11
52
25
42
Good
28
5
9
20
13
Good
50
9
31
24
41
Good
39
7
27
21
23
Good
33
6
11
20
17
Good
33
6
19
16
75
Good
39
7
8
9
96
Good
22
4
8
18
70
Good
44
8
19
16
77
Good
28
5
16
20
56
Good
11
2
2
21
60
Moderate
56
12
26
31
13
Good
25
4
9
18
73
Good
39
7
13
19
63
Good
44
8
22
16
75
Moderate
58
13
21
20
58
Good
28
5
10
26
18
Moderate
67
18
45
25
40
Good
42
8
37
25
41
Good
44
8
27
16
81
Good
17
3
9
19
68
Good
33
6
11
20
59
Good
22
4
22
17
75
Good
50
9
14
31
13
Good
28
5
10
19
68
Good
28
5
11
27
14
Moderate
62
15
61
25
40
Moderate
88
29
57
24
44
Good
44
8
26
17
63
Moderate
97
34
42
24
44
Moderate
66
17
35
17
75
Good
24
4
13
19
66
Good
22
4
9
19
63
Good
39
7
19
22
14
Moderate
96
33
50
23
50
Moderate
53
10
38
27
38
Good
11
2
8
14
31
Good
17
3
8
18
34
Good
39
7
14
23
41
Good
24
4
9
14
90
Good
37
7
8
13
93
Moderate
58
13
31
27
18
Good
11
2
2
21
60
Good
35
6
12
25
16
Good
39
7
7
19
63
Moderate
58
13
44
25
39
Good
39
7
27
27
13
Good
17
3
9
22
50
Good
18
3
13
21
58
Good
33
6
13
17
75
Moderate
52
10
32
31
19
Good
39
7
14
23
41
Moderate
58
13
28
27
18
Moderate
58
13
33
21
62
Good
22
4
12
18
73
Good
22
4
6
22
53
Good
33
6
13
18
68
Good
28
5
12
18
73
Good
33
6
16
16
75
Good
11
2
11
23
53
Good
39
7
11
19
65
Good
36
6
12
18
68
Moderate
56
12
24
17
78
Moderate
62
15
40
22
48
Good
17
3
5
15
87
Good
33
6
21
16
75
Good
44
8
24
16
81
Moderate
53
10
23
21
49
Good
33
6
14
27
18
Good
33
6
16
17
75
Good
17
3
5
18
68
Good
49
4
53
25
37
Good
25
2
27
17
63
Good
30
6
8
14
93
Moderate
84
26
30
21
63
Moderate
56
12
33
20
58
Good
22
4
18
21
43
Moderate
92
31
47
19
70
Good
17
3
12
13
29
Moderate
56
12
29
27
38
Good
17
3
7
18
68
Good
30
4
32
23
41
Good
22
4
8
14
93
Good
20
4
8
18
34
Good
17
3
12
14
31
Good
33
6
14
25
26
Moderate
63
16
38
18
74
Moderate
56
12
37
25
42
Moderate
79
24
50
22
42
Good
22
4
24
23
41
Good
17
3
12
14
31
Good
40
3
42
24
41
Good
37
7
11
17
65
Moderate
79
24
47
23
50
Good
12
2
13
19
63
Good
22
4
6
18
70
Good
44
8
23
19
70
Good
19
3
21
24
12
Moderate
57
12
49
25
42
Good
33
6
8
12
94
Moderate
55
11
39
32
19
Good
33
6
10
17
65
Good
11
2
7
19
68
Good
17
3
18
22
61
Good
22
4
7
18
68
Good
17
3
15
20
64
Moderate
57
12
38
25
42
Good
17
3
17
21
59
Moderate
56
12
47
22
36
Good
15
3
4
13
82
Good
15
2
16
22
53
Good
44
8
24
27
14

United States's Metro Cities

Air Quality Index

Chicago City AQI

Chicago

29

temp.16°C
hum.27%
Los Angeles City AQI

Los Angeles

90

temp.19°C
hum.68%
Minneapolis City AQI

Minneapolis

35

temp.16°C
hum.25%
Nashville City AQI

Nashville

39

temp.18°C
hum.52%
New Orleans City AQI

New Orleans

50

temp.21°C
hum.59%
New York City City AQI

New York City

33

temp.13°C
hum.28%
San Francisco City AQI

San Francisco

22

temp.19°C
hum.65%
Washington City AQI

Washington

11

temp.14°C
hum.30%

Health Advice For People Living In

California

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

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

As per the current AQI, turn off the air purifier.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

California

  • asthma due to air pollution in CaliforniaAsthma
  • heart due to air pollution in CaliforniaHeart Issues
  • allergy due to air pollution in CaliforniaAllergies
  • sinus due to air pollution in CaliforniaSinus
  • flu due to air pollution in CaliforniaCold/Flu
  • copd due to air pollution in CaliforniaChronic (COPD)
asthma due to air pollution in California

Low Chances of Asthma

Asthma

Risk of Asthma symptoms is Low when AQI is Good (0-50)

Mild symptoms such as slight wheezing, occasional cough, and minor shortness of breath

Do's :

  • Keep track of air quality to plan outdoor activities safely.

  • Drink water to keep airways moist and reduce irritation.

  • Include non-allergenic fruits and vegetables that support overall lung health, like apples, pears, and spinach.

Don'ts :

  • Skip medications that is prescribed by your doctor.

  • Engage in outdoor activities in early morning during high pollen hours.

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 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

Follow

1.

Moline, United States

112
Poor
7xabove Standard

2.

Iowa City, United States

108
Poor
7xabove Standard

3.

Lomita, United States

102
Poor
7xabove Standard

4.

Athens, United States

100
Moderate
7xabove Standard

5.

Gardena, United States

97
Moderate
6xabove Standard

6.

Pico Rivera, United States

97
Moderate
6xabove Standard

7.

Pomona, United States

96
Moderate
6xabove Standard

8.

Florence Graham, United States

94
Moderate
6xabove Standard

9.

Compton, United States

94
Moderate
6xabove Standard

10.

East Rancho Dominguez, United States

94
Moderate
6xabove Standard

Last Updated: 05 Nov 2025, 12:53 AM

AQI City Rankings

Air Quality Solutions For California

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
air quality solutions for offices for California

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 for California

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 California

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 for California

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 for California

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 for California

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 for California

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 for California

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 for California

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 California

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 for California

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 for California

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 California

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 for California

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 for California

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 for California

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.

California's AQI Data Analytics Solutions

Air quality data monitoring platforms

Mobile AppMobile App
Smart TV AppSmart TV App
Web DashboardWeb Dashboard
APIAPI
WidgetsWidgets
aqi air quality app for California
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.

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

Personalized health advice as per current AQI.

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Connect and control your air quality devices.

Air Quality FAQs

at California

Frequently Asked Questions About Air Quality

What is the current AQI level in California?

The current real-time AQI level in California is 44 (Good). This was last updated 2025-11-05 06:23:32 AM (Local Time).

When was the best AQI level in California in the last 24 hours?

The best AQI level was 40 (Good) at 8:04 AM, Nov 4, 2025 (Local Time) during the last 24 hours.

When was the worst AQI level in California in the last 24 hours?

The worst AQI level was 50 (Good) at 9:04 PM, Nov 3, 2025 (Local Time) during the last 24 hours.

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

The AQI levels in California remained stable over the last 24 hours as around 43.32 .

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

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

Recent AQI Blogs

Read the latest news

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

Delhi’s Silent Killer: 15% of Deaths in 2023 Linked to Air Pollution

Delhi’s Silent Killer: 15% of Deaths in 2023 Linked to Air Pollution

4 Nov 2025Navya
Flawed Cloud Seeding Attempt in Delhi – What is the concept and why did it not work out

Flawed Cloud Seeding Attempt in Delhi – What is the concept and why did it not work out

31 Oct 2025Anwesha
The AQI Divide: Unveiling the True Air Quality in Delhi

The AQI Divide: Unveiling the True Air Quality in Delhi

29 Oct 2025Abhishek
Red Fort in Delhi is Not Red Anymore! It is Turning Black: Air Pollution Damaging Red Fort

Red Fort in Delhi is Not Red Anymore! It is Turning Black: Air Pollution Damaging Red Fort

18 Sept 2025Shakshi
What’s the Connection Between Air Pollution and Blood Cancer?

What’s the Connection Between Air Pollution and Blood Cancer?

13 Sept 2025Shakshi
Mercury Air Pollution in Delhi: What You’re Inhaling Without Knowing

Mercury Air Pollution in Delhi: What You’re Inhaling Without Knowing

9 Sept 2025Shakshi
India Floods 2025: How Waterlogging Is Creating a Hidden Air Pollution Crisis?

India Floods 2025: How Waterlogging Is Creating a Hidden Air Pollution Crisis?

3 Sept 2025Shakshi
No Clean Air Day in Delhi 2025: Why Even Monsoon Could Not Help?

No Clean Air Day in Delhi 2025: Why Even Monsoon Could Not Help?

28 Aug 2025Shakshi
Over 2 lakh residents reported air pollution hospitalisations in Delhi from 2022 to 2024. 

Over 2 lakh residents reported air pollution hospitalisations in Delhi from 2022 to 2024. 

21 Aug 2025Shakshi
Abu Dhabi in the Top 10 Most Polluted Cities in the World: Middle East Air Quality Crisis 2025

Abu Dhabi in the Top 10 Most Polluted Cities in the World: Middle East Air Quality Crisis 2025

19 Aug 2025Shakshi
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Prana Sense

Air Quality Monitor

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

Prana Sense Air Quality MonitorPrana Sense Air Quality Monitor
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Pocket PM

Air Quality Monitor

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

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Cair +

Indoor Air Quality Monitor

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

Cair + Indoor Air Quality MonitorCair + Indoor Air Quality Monitor