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California Air Quality Index (AQI) | Air Pollution

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

Last Updated: 59 seconds ago (Local Time)

location image
Live AQI
45(AQI-US)
Air Quality is
Good
pm10 :  40 µg/m³
PM2.5 :  9 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level.webp in California
sunny

33 °C

Sunny
Humidity
Humidity38 %
Wind Speed
Wind Speed16 km/h
UV Index
UV Index7
Last Updated: 59 seconds ago (Local Time)
Map

California

Major Air Pollutants

California

PM2.5's Icon

Particulate Matter(PM2.5)

9µg/m³

PM10's Icon

Particulate Matter(PM10)

40µg/m³

CO's Icon

Carbon Monoxide(CO)

2ppb

SO2's Icon

Sulfur Dioxide(SO2)

1ppb

NO2's Icon

Nitrogen Dioxide(NO2)

7ppb

O3's Icon

Ozone(O3)

49ppb

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AQI Graph

Historical Air Quality Data

California

24 Hours
AQI
California
AQI
.
20-08-2025Time21-08-2025
34
Min.at 7:09 PM on 20th Aug
48
Max.at 12:09 PM on 21st Aug

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.(%)
Moderate
63
15
38
20
73
Good
39
7
30
22
72
Good
20
4
22
21
58
Moderate
60
14
35
21
76
Good
30
5
29
19
78
Good
47
8
40
20
74
Good
39
7
31
19
78
Moderate
63
16
38
21
76
Good
44
8
36
20
64
Good
29
4
32
21
65
Good
22
4
24
20
72
Good
49
9
39
20
74
Moderate
58
12
69
21
66
Good
24
4
20
22
71
Good
22
4
22
22
68
Moderate
54
8
62
21
67
Good
49
9
38
20
74
Moderate
56
12
37
20
74
Good
20
4
14
16
74
Good
20
3
16
16
74
Moderate
52
10
46
21
71
Moderate
56
12
46
22
74
Moderate
65
16
37
21
76
Moderate
60
14
51
20
70
Good
49
9
44
22
75
Moderate
54
11
44
22
74
Moderate
54
10
32
22
75
Moderate
52
10
48
21
67
Moderate
52
10
55
21
67
Moderate
59
13
44
21
73
Moderate
62
15
36
22
76
Good
28
5
17
20
61
Good
28
4
30
16
74
Good
50
9
44
20
78
Good
27
3
30
20
60
Moderate
56
12
40
21
73
Good
34
6
30
19
77
Moderate
72
19
97
21
66
Good
20
4
22
21
58
Good
32
6
29
19
78
Moderate
66
17
36
21
76
Good
39
5
43
20
74
Good
42
5
45
20
74
Moderate
61
14
77
21
72
Good
38
7
28
20
78
Moderate
56
12
35
22
76
Good
40
7
32
20
78
Good
43
8
25
17
71
Moderate
58
7
71
20
74
Good
35
6
33
20
67
Moderate
62
15
36
22
76
Moderate
53
10
52
21
71
Moderate
53
10
38
21
67
Moderate
53
10
46
22
75
Moderate
56
12
41
21
76
Good
45
8
37
19
78
Moderate
61
14
37
20
74
Good
35
6
30
20
77
Good
39
7
36
19
78
Moderate
54
8
62
21
67
Moderate
52
10
52
21
71
Moderate
61
15
43
21
76
Good
42
7
43
19
79
Moderate
52
9
52
21
74
Good
32
6
24
16
76
Good
31
6
27
19
79
Good
46
8
26
22
73
Moderate
70
20
91
21
68
Moderate
58
13
34
21
76
Good
42
7
35
19
78
Moderate
63
16
37
21
76
Moderate
55
11
64
21
72
Moderate
57
12
52
21
65
Moderate
57
12
37
21
76
Good
28
5
22
20
58
Good
35
6
30
19
79
Good
48
9
45
20
74
Moderate
68
18
85
21
71
Good
41
7
45
20
71
Good
31
5
30
19
78
Good
40
5
43
20
60
Good
28
5
31
19
76
Good
33
5
37
21
67
Moderate
65
17
39
21
76
Moderate
61
7
76
21
67
Moderate
51
9
45
22
75
Good
33
6
37
20
73
Moderate
58
12
62
20
66
Good
24
4
14
20
61
Good
22
4
21
22
56
Moderate
51
7
56
21
67
Moderate
60
14
44
21
71
Good
49
9
45
21
74
Good
27
4
29
20
74
Good
20
4
20
22
63
Good
37
7
21
20
61
Good
17
3
12
15
79
Good
31
5
31
19
79
Good
47
7
52
21
75
Good
41
7
13
17
70
Moderate
52
6
57
20
73
Moderate
60
14
37
22
76
Moderate
66
17
37
21
76
Good
26
4
16
20
62
Moderate
59
14
36
22
76
Moderate
61
15
44
21
73
Moderate
60
14
74
21
68
Good
26
5
23
20
60
Moderate
66
16
85
21
71
Good
23
4
21
19
61
Good
22
4
13
14
70
Good
50
9
42
20
74
Moderate
52
9
58
21
65
Moderate
71
20
96
21
71
Good
27
4
29
19
77
Moderate
53
10
46
22
74
Moderate
58
8
70
21
76
Moderate
52
7
57
20
74
Good
28
5
17
16
71
Good
24
4
15
20
61
Good
49
9
54
20
73
Good
19
3
22
21
57
Good
18
3
10
15
79
Moderate
52
9
58
21
71
Good
24
3
26
19
64
Good
40
7
36
19
78
Moderate
60
14
41
21
73
Good
22
4
24
20
72
Moderate
55
11
41
20
74
Moderate
54
10
46
22
74
Moderate
61
14
38
20
74
Moderate
52
10
41
20
74
Moderate
63
16
38
21
76
Good
46
8
51
21
67
Good
27
5
18
20
61
Moderate
56
11
58
21
66
Good
32
6
21
17
74
Moderate
55
11
57
21
67
Good
41
7
31
20
78
Good
41
7
43
19
78
Good
36
7
34
21
69
Good
47
8
35
21
71
Good
22
4
24
21
68
Moderate
55
12
58
21
67
Moderate
66
14
87
21
67
Moderate
57
12
56
21
66
Good
42
7
37
21
65
Moderate
61
14
40
21
76
Moderate
52
10
52
21
71
Good
23
4
24
21
61
Moderate
58
7
71
20
74
Good
18
3
14
16
74
Moderate
56
12
52
21
65
Moderate
55
9
64
21
67
Good
34
5
38
16
75
Good
23
4
21
19
61
Good
42
8
28
20
74
Good
34
6
27
19
75
Good
25
4
28
20
73
Good
41
7
26
22
72
Moderate
55
11
41
20
74
Good
25
4
18
19
68
Good
47
8
37
19
78
Moderate
58
12
62
20
66
Good
19
3
22
22
57
Good
43
8
33
19
78
Good
33
6
30
19
78
Moderate
56
12
48
21
76
Moderate
54
11
44
22
74
Good
42
8
28
20
74
Good
43
8
46
21
70
Moderate
55
11
40
21
72
Moderate
64
16
38
20
73
Moderate
52
10
52
20
73
Moderate
51
9
56
21
72
Moderate
59
13
39
20
74
Moderate
54
11
38
21
74
Moderate
60
13
74
21
70
Good
49
9
38
20
74
Good
49
9
37
20
74
Moderate
60
14
40
22
76
Good
42
6
46
21
74
Good
47
7
52
21
75
Good
26
3
29
22
70
Moderate
55
12
50
21
74
Good
48
7
52
21
69
Good
24
4
19
22
70
Moderate
52
10
55
21
67
Good
31
5
34
19
78
Moderate
62
10
77
21
67
Good
24
4
26
22
67
Good
28
4
32
19
71
Moderate
58
13
37
22
76
Good
47
9
47
21
70
Good
28
4
26
19
72
Moderate
61
15
37
21
76
Good
22
4
10
15
79
Good
43
7
46
21
69
Good
31
5
29
19
78
Good
46
8
39
20
74
Good
28
5
22
15
79
Good
30
4
32
16
74
Good
16
3
11
15
79
Moderate
51
9
36
21
74
Moderate
56
12
56
21
65
Good
32
6
21
22
72
Moderate
53
10
50
20
71
Good
45
8
49
20
74
Good
24
4
14
15
79
Moderate
53
9
60
20
74
Good
32
6
28
19
79
Good
44
8
47
21
74
Good
39
6
43
19
78
Moderate
52
10
36
20
78
Good
44
8
49
21
65
Good
33
6
27
21
60
Moderate
68
9
89
21
67
Good
25
3
28
20
67
Moderate
54
11
46
22
74
Good
19
4
22
20
73
Good
34
6
27
19
79
Good
48
9
39
19
78
Good
29
5
32
19
78
Good
37
6
36
19
78
Good
40
7
34
22
70
Good
34
6
32
19
79
Good
26
4
26
20
64
Good
24
3
26
19
66
Good
38
7
35
19
79
Good
29
5
13
17
70

United States's Metro Cities

Air Quality Index

Chicago City AQI

Chicago

22

temp.25°C
hum.58%
Los Angeles City AQI

Los Angeles

61

temp.37°C
hum.24%
Minneapolis City AQI

Minneapolis

38

temp.28°C
hum.53%
Nashville City AQI

Nashville

24

temp.25°C
hum.64%
New Orleans City AQI

New Orleans

42

temp.29°C
hum.77%
New York City City AQI

New York City

21

temp.21°C
hum.61%
San Francisco City AQI

San Francisco

60

temp.18°C
hum.83%
Washington City AQI

Washington

18

temp.22°C
hum.74%

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.

Clovis, United States

72
Moderate
5xabove Standard

2.

Mayfair, United States

71
Moderate
5xabove Standard

3.

Fresno, United States

70
Moderate
5xabove Standard

4.

Hanford, United States

68
Moderate
5xabove Standard

5.

Visalia, United States

68
Moderate
5xabove Standard

6.

Compton, United States

66
Moderate
4xabove Standard

7.

Madera, United States

66
Moderate
4xabove Standard

8.

Lompoc, United States

66
Moderate
4xabove Standard

9.

Parlier, United States

66
Moderate
4xabove Standard

10.

Bromela, United States

65
Moderate
4xabove Standard

Last Updated: 21 Aug 2025, 10:49 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 45 (Good). This was last updated 59 seconds ago (Local Time).

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

The best AQI level was 34 (Good) at 7:09 PM, Aug 20, 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 48 (Good) at 12:09 PM (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 have been fluctuating throughout the last 24 hours. The levels have increased by highest 48 at 12:09 PM (Local Time), lowest 34 at 7:09 PM, Aug 20, 2025 (Local Time).

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.

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
New Delhi Annual Air Quality: Comparative Analysis of AQI (2020–2025)

New Delhi Annual Air Quality: Comparative Analysis of AQI (2020–2025)

26 Jul 2025Gyane Haobijam
Free Air Quality Monitor from AQI.in: How Anyone Can Track Pollution?

Free Air Quality Monitor from AQI.in: How Anyone Can Track Pollution?

26 Jul 2025Shakshi
Prana Air Logo

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
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.

Pocket PM Air Quality MonitorPocket PM Air Quality Monitor
Prana Air Logo

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