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California Air Quality Index (AQI) | Air Pollution

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

Last Updated: 10 minutes ago (Local Time)

location image
Live AQI
37(AQI-US)
Air Quality is
Good
pm10 :  21 µg/m³
PM2.5 :  7 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level.webp in California
fog

16 °C

Fog
Humidity
Humidity83 %
Wind Speed
Wind Speed10 km/h
UV Index
UV Index0
Last Updated: 10 minutes ago (Local Time)
Map

California

Major Air Pollutants

California

PM2.5's Icon

Particulate Matter(PM2.5)

7µg/m³

PM10's Icon

Particulate Matter(PM10)

21µg/m³

CO's Icon

Carbon Monoxide(CO)

4ppb

SO2's Icon

Sulfur Dioxide(SO2)

0ppb

NO2's Icon

Nitrogen Dioxide(NO2)

7ppb

O3's Icon

Ozone(O3)

23ppb

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AQI Graph

Historical Air Quality Data

California

24 Hours
AQI
California
AQI
.
13-09-2025Time14-09-2025
36
Min.at 9:09 AM on 13th Sep
41
Max.at 2:09 PM on 13th Sep

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
38
7
15
25
60
Good
38
7
16
25
62
Good
43
8
17
23
47
Moderate
53
10
42
23
71
Good
40
7
19
21
78
Good
19
4
14
23
68
Good
19
3
18
23
69
Good
30
5
17
23
71
Moderate
51
10
26
22
58
Good
28
5
14
23
56
Good
40
7
24
22
74
Good
22
4
15
24
67
Moderate
56
12
28
23
56
Good
44
8
23
26
54
Good
47
9
31
26
44
Good
17
3
19
23
68
Good
16
3
14
23
68
Good
17
3
15
25
61
Moderate
54
11
24
20
66
Good
35
6
16
20
66
Good
42
8
20
23
63
Good
36
7
26
24
69
Good
31
6
12
23
71
Moderate
55
11
33
23
63
Good
39
7
37
24
69
Good
43
8
28
24
68
Good
47
9
17
23
59
Good
20
4
16
23
68
Good
45
8
19
24
65
Good
50
9
20
24
70
Good
46
8
19
21
56
Good
22
4
14
19
68
Good
28
5
16
21
78
Good
37
7
22
23
50
Moderate
62
15
42
23
67
Good
22
4
20
22
73
Good
36
6
21
23
68
Good
43
8
17
23
47
Good
43
8
23
22
78
Good
48
9
20
24
70
Good
16
3
15
24
63
Good
16
3
15
24
63
Moderate
51
9
23
24
63
Good
34
6
19
21
78
Good
48
9
37
24
70
Good
18
4
16
21
79
Good
40
7
31
20
63
Good
23
4
20
24
67
Moderate
53
10
23
23
58
Good
49
9
29
23
63
Good
48
9
18
23
57
Good
42
8
25
24
69
Good
46
8
22
23
71
Good
24
4
14
23
68
Good
21
4
15
25
60
Good
22
4
14
21
78
Good
17
3
14
23
69
Good
17
3
19
23
68
Good
38
7
29
23
63
Moderate
52
10
25
23
68
Good
28
5
17
22
75
Moderate
58
13
32
23
70
Good
18
3
10
18
72
Good
24
4
22
21
78
Good
41
7
23
24
69
Good
45
8
23
24
65
Moderate
55
11
43
23
71
Good
22
4
11
23
68
Good
48
9
20
24
70
Good
22
4
16
24
62
Moderate
62
14
30
24
53
Good
47
8
18
24
70
Good
46
8
19
22
49
Good
30
5
20
22
77
Good
14
3
15
25
60
Good
47
8
21
24
61
Good
29
5
23
22
71
Good
17
3
16
23
69
Good
49
9
26
23
50
Good
25
5
21
22
72
Good
25
5
19
23
68
Moderate
52
10
22
23
69
Good
29
5
18
23
63
Moderate
52
10
26
24
69
Good
36
6
22
21
75
Moderate
58
14
32
23
59
Good
38
6
16
21
56
Good
49
9
27
26
40
Good
23
4
15
23
63
Good
48
9
21
23
63
Moderate
52
10
29
23
71
Good
26
5
24
22
73
Moderate
58
12
30
26
48
Good
49
9
22
21
56
Good
21
4
8
17
58
Good
26
5
19
23
74
Good
16
3
14
25
60
Good
49
9
20
20
62
Good
22
4
20
23
69
Good
49
9
20
23
70
Good
32
6
17
24
71
Good
45
8
16
21
57
Good
50
9
36
24
70
Moderate
51
10
25
23
66
Good
23
4
19
23
68
Good
42
8
26
23
49
Good
42
8
22
24
63
Good
21
4
16
20
56
Good
34
6
28
18
55
Good
20
4
11
25
60
Good
50
9
25
23
53
Moderate
51
9
25
24
63
Good
24
4
25
21
77
Moderate
51
9
32
24
68
Good
36
6
19
24
60
Good
29
5
16
24
60
Moderate
60
14
21
20
65
Good
33
6
17
21
56
Good
37
7
20
25
60
Moderate
52
10
32
26
39
Good
20
4
7
17
59
Good
28
5
16
23
63
Good
27
5
16
21
53
Good
17
3
14
23
69
Good
28
5
17
23
67
Good
40
7
24
22
74
Good
16
3
14
25
60
Good
48
9
31
24
68
Good
27
5
14
25
60
Good
21
4
16
23
67
Good
30
5
17
23
71
Moderate
51
9
25
23
58
Good
45
8
18
21
56
Moderate
57
13
31
24
55
Good
50
10
19
20
63
Good
25
4
13
23
63
Good
32
6
19
21
78
Good
32
6
17
22
78
Good
37
7
18
23
62
Good
48
9
25
23
63
Good
28
5
20
22
60
Good
43
8
18
23
67
Good
46
8
19
23
68
Moderate
53
10
31
23
63
Good
40
7
18
23
55
Moderate
51
9
21
23
68
Good
38
7
29
23
63
Good
35
6
18
24
50
Good
23
4
20
24
67
Good
34
6
15
20
66
Moderate
57
13
30
24
53
Moderate
58
13
22
23
59
Good
16
3
14
19
68
Good
21
4
16
20
56
Good
32
6
18
22
71
Good
30
6
19
20
72
Good
34
6
19
21
69
Good
44
8
25
24
68
Good
16
3
14
25
60
Good
38
7
16
21
53
Good
20
4
14
23
69
Moderate
58
14
32
23
59
Moderate
52
10
31
26
39
Good
37
7
17
23
71
Good
19
3
15
23
68
Good
22
4
14
25
60
Good
47
8
29
24
68
Good
32
6
18
22
71
Moderate
59
14
32
23
63
Moderate
53
11
36
23
64
Good
16
3
14
25
60
Good
24
4
16
25
60
Good
23
4
16
24
63
Good
16
3
14
25
60
Good
32
6
14
23
66
Good
26
5
18
24
63
Good
16
3
14
24
67
Good
14
3
14
24
68
Good
47
8
18
24
70
Moderate
51
9
22
23
71
Good
16
3
14
25
60
Good
37
7
16
25
59
Good
24
4
13
23
63
Good
32
6
29
23
63
Good
39
7
29
24
66
Good
20
4
16
23
68
Good
13
2
7
23
68
Good
46
8
21
23
59
Good
37
7
20
26
49
Good
32
6
24
22
66
Moderate
52
9
22
24
70
Good
50
9
24
23
63
Good
29
6
18
22
62
Good
48
9
20
23
70
Good
19
3
9
17
59
Moderate
55
11
21
23
63
Good
21
4
21
23
71
Good
37
7
16
23
67
Good
19
3
5
17
63
Good
24
4
14
19
67
Good
19
3
9
17
59
Good
35
6
27
23
71
Moderate
52
9
29
23
56
Good
46
8
22
23
66
Moderate
52
10
26
23
63
Good
26
5
14
24
60
Good
20
4
8
17
61
Good
25
5
12
24
60
Good
23
4
23
22
76
Moderate
52
9
26
23
70
Good
20
4
15
23
69
Good
17
3
14
23
68
Good
39
7
20
23
53
Moderate
54
11
28
23
47
Good
50
9
20
23
66
Good
21
4
20
22
57
Good
37
7
24
24
69
Good
28
4
30
21
73
Good
36
7
20
22
78
Good
26
5
18
23
68
Good
17
3
15
23
68
Good
26
5
18
23
70
Good
49
8
22
23
64
Good
36
7
17
23
68
Good
38
7
20
23
52
Good
22
4
20
21
58
Good
39
7
23
22
78
Moderate
51
9
19
20
59

United States's Metro Cities

Air Quality Index

Chicago City AQI

Chicago

65

temp.21°C
hum.78%
Los Angeles City AQI

Los Angeles

51

temp.20°C
hum.81%
Minneapolis City AQI

Minneapolis

58

temp.21°C
hum.90%
Nashville City AQI

Nashville

52

temp.21°C
hum.78%
New Orleans City AQI

New Orleans

60

temp.27°C
hum.79%
New York City City AQI

New York City

44

temp.21°C
hum.70%
San Francisco City AQI

San Francisco

15

temp.16°C
hum.90%
Washington City AQI

Washington

44

temp.20°C
hum.82%

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.

Dearborn, United States

92
Moderate
6xabove Standard

2.

Allen Park, United States

92
Moderate
6xabove Standard

3.

River Rouge, United States

92
Moderate
6xabove Standard

4.

Detroit, United States

89
Moderate
6xabove Standard

5.

Ecorse, United States

88
Moderate
6xabove Standard

6.

Oak Park, United States

81
Moderate
5xabove Standard

7.

Port Huron, United States

78
Moderate
5xabove Standard

8.

Chanute, United States

76
Moderate
5xabove Standard

9.

Bonners Ferry, United States

75
Moderate
5xabove Standard

10.

New Haven, United States

73
Moderate
5xabove Standard

Last Updated: 14 Sept 2025, 02:13 PM

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 37 (Good). This was last updated 10 minutes ago (Local Time).

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

The best AQI level was 36 (Good) at 9:09 AM, Sep 13, 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 41 (Good) at 2:09 PM, Sep 13, 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 37.583333333333336 .

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.

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
Europe heatwave and wildfires 2025: What is happening across Spain, Portugal and neighbouring countries?

Europe heatwave and wildfires 2025: What is happening across Spain, Portugal and neighbouring countries?

13 Aug 2025Shakshi
How Air Pollution Damages Your Long-Term Financial Health?

How Air Pollution Damages Your Long-Term Financial Health?

12 Aug 2025Shakshi
Biggest Wildfire in France’s History?What It Means for Air Quality, Health, and Climate

Biggest Wildfire in France’s History?What It Means for Air Quality, Health, and Climate

7 Aug 2025Shakshi
DU Cut-Off 2025: How’s the Air Near Your Dream College?

DU Cut-Off 2025: How’s the Air Near Your Dream College?

6 Aug 2025Shakshi
Why You Should Add a Real-Time Weather and AQI Widget to Your Website?

Why You Should Add a Real-Time Weather and AQI Widget to Your Website?

1 Aug 2025Shakshi
Minneapolis Air Quality Alert: Wildfire Smoke Pushes Pollution to Unhealthy Levels

Minneapolis Air Quality Alert: Wildfire Smoke Pushes Pollution to Unhealthy Levels

31 Jul 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.

Pocket PM Air Quality MonitorPocket PM Air Quality Monitor
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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