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California Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-11-01 04:17:27 PM (Local Time)

location image
Live AQI
55(AQI-US)
Air Quality is
Moderate
pm10 :  29 µg/m³
PM2.5 :  13 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi moderate level.webp in California
overcast

17 °C

Overcast
Humidity
Humidity86 %
Wind Speed
Wind Speed4 km/h
UV Index
UV Index0
Last Updated: 2025-11-01 04:17:27 PM (Local Time)
Map

California

Major Air Pollutants

California

PM2.5's Icon

Particulate Matter(PM2.5)

13µg/m³

PM10's Icon

Particulate Matter(PM10)

29µg/m³

CO's Icon

Carbon Monoxide(CO)

440ppb

SO2's Icon

Sulfur Dioxide(SO2)

1ppb

NO2's Icon

Nitrogen Dioxide(NO2)

15ppb

O3's Icon

Ozone(O3)

17ppb

AQI Graph

Historical Air Quality Data

California

24 Hours
AQI
California
AQI
.
31-10-2025Time01-11-2025
46
Min.at 7:04 AM on 31st Oct
58
Max.at 1:04 AM on 1st 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.(%)
Moderate
58
13
20
12
93
Good
44
8
22
14
100
Good
39
7
23
14
63
Good
28
5
30
15
94
Good
44
8
13
11
86
Good
50
9
18
11
93
Good
50
9
23
13
87
Moderate
55
11
15
9
100
Moderate
66
19
55
16
47
Good
17
3
16
9
89
Moderate
56
12
24
13
67
Moderate
66
17
28
11
89
Moderate
91
31
76
15
72
Good
50
9
45
12
74
Good
50
9
43
15
27
Good
50
9
13
12
90
Moderate
56
12
18
12
94
Moderate
64
16
26
12
93
Good
11
2
9
6
47
Moderate
52
10
10
6
47
Moderate
62
15
56
14
26
Good
42
8
27
16
32
Moderate
53
10
16
9
100
Moderate
73
14
99
14
84
Moderate
68
15
90
16
32
Good
30
5
26
16
33
Moderate
53
10
20
16
93
Moderate
53
10
14
14
96
Good
22
4
19
11
100
Moderate
53
10
18
14
96
Moderate
73
21
32
16
92
Good
11
2
7
11
44
Moderate
56
12
15
3
93
Moderate
68
18
19
13
77
Moderate
53
10
36
11
69
Moderate
69
19
34
16
90
Moderate
53
10
16
8
95
Moderate
65
16
33
14
87
Good
39
7
23
13
67
Good
44
8
27
12
88
Moderate
73
21
34
16
90
Good
50
9
15
12
88
Good
50
9
15
12
88
Moderate
77
23
54
14
83
Moderate
53
10
12
13
77
Moderate
68
18
30
17
86
Moderate
78
24
24
10
96
Good
42
5
46
14
74
Moderate
53
10
16
11
86
Moderate
71
20
35
14
84
Moderate
73
21
32
16
90
Moderate
53
10
14
14
96
Moderate
94
32
70
15
72
Moderate
67
18
30
15
98
Moderate
97
34
63
17
30
Moderate
60
14
18
14
100
Good
38
6
22
12
91
Moderate
53
10
16
12
93
Moderate
62
15
24
8
100
Moderate
55
11
19
12
88
Good
50
9
13
13
89
Good
44
8
42
12
100
Moderate
73
21
42
16
90
Good
50
9
16
12
85
Moderate
75
22
63
15
90
Moderate
55
11
20
10
87
Moderate
53
10
18
10
70
Moderate
58
13
28
12
100
Poor
105
37
70
13
99
Good
29
5
31
15
94
Good
50
9
16
11
94
Moderate
75
22
34
16
90
Good
44
8
16
11
87
Good
28
5
24
18
24
Good
33
6
7
14
96
Moderate
52
10
22
14
65
Good
44
8
24
12
83
Moderate
56
12
20
11
100
Moderate
78
24
46
13
97
Moderate
58
13
18
11
89
Moderate
55
11
16
8
100
Good
50
9
26
13
58
Moderate
53
10
24
9
90
Good
39
7
19
10
87
Moderate
71
20
43
16
90
Moderate
53
10
50
11
83
Good
50
9
44
21
27
Good
17
3
15
14
55
Moderate
76
22
52
16
84
Good
11
2
7
16
30
Moderate
69
19
41
13
90
Good
28
5
28
10
92
Good
28
5
28
15
94
Moderate
60
14
56
11
85
Moderate
53
10
18
9
90
Moderate
68
18
28
17
32
Good
38
6
41
18
22
Moderate
53
10
12
-1
55
Moderate
65
17
21
14
63
Good
39
7
10
12
90
Moderate
56
12
28
14
94
Good
44
8
13
11
84
Moderate
73
21
34
16
90
Moderate
55
11
15
14
70
Good
11
2
7
16
30
Moderate
74
22
32
16
92
Moderate
73
21
49
16
87
Moderate
55
11
17
12
90
Good
44
8
15
14
55
Moderate
64
16
29
12
96
Moderate
58
13
18
3
93
Good
42
8
12
-1
55
Moderate
78
24
42
11
91
Moderate
94
32
77
15
72
Moderate
99
35
76
13
94
Moderate
62
15
22
8
100
Good
44
8
36
11
69
Moderate
66
17
40
13
90
Moderate
60
14
32
11
93
Moderate
60
14
36
12
93
Good
11
2
7
16
30
Moderate
80
24
52
11
96
Moderate
55
11
11
4
81
Good
39
7
8
8
49
Good
17
3
16
9
100
Moderate
66
17
18
4
89
Moderate
55
11
19
12
88
Moderate
54
11
14
9
100
Moderate
56
12
22
14
65
Moderate
60
14
19
12
94
Good
44
8
34
11
69
Moderate
57
12
20
12
93
Good
50
9
19
12
90
Moderate
53
10
15
9
100
Moderate
53
10
18
12
100
Good
11
2
7
11
40
Moderate
66
17
54
16
89
Moderate
61
15
39
13
91
Moderate
55
11
14
9
100
Good
44
8
12
13
77
Moderate
55
11
22
12
86
Good
39
7
23
10
96
Good
50
9
22
20
31
Moderate
62
15
20
14
74
Good
18
2
19
17
20
Moderate
86
28
58
14
87
Moderate
69
19
46
18
24
Good
25
3
27
9
89
Moderate
73
21
36
16
93
Good
44
8
42
12
100
Good
44
8
19
14
54
Moderate
53
10
16
11
86
Good
50
9
10
6
47
Good
29
5
31
15
90
Moderate
76
22
67
14
83
Moderate
66
17
19
0
93
Moderate
60
14
19
2
93
Good
12
2
13
10
87
Moderate
52
10
14
10
87
Good
39
7
12
10
91
Moderate
58
13
58
13
58
Moderate
56
12
20
12
94
Good
48
12
20
13
41
Moderate
56
12
18
12
90
Moderate
77
23
52
16
88
Moderate
55
11
14
9
37
Moderate
58
13
16
13
84
Moderate
54
11
27
13
79
Moderate
55
11
15
10
92
Good
37
7
25
11
69
Good
12
2
13
10
87
Moderate
58
13
55
13
58
Moderate
68
18
30
15
92
Moderate
61
14
23
12
93
Moderate
59
13
21
12
90
Good
50
9
15
11
87
Moderate
58
13
20
10
96
Good
50
9
34
10
100
Moderate
55
11
19
10
96
Moderate
53
10
15
11
93
Good
22
4
7
12
96
Moderate
53
10
18
14
96
Moderate
64
16
76
14
82
Good
39
7
10
12
90
Moderate
62
15
48
9
100
Moderate
55
11
14
9
100
Moderate
55
11
14
14
96
Good
17
3
12
11
46
Good
22
4
19
11
100
Moderate
53
10
15
9
100
Moderate
97
34
75
15
72
Moderate
53
10
24
9
90
Good
46
8
12
11
86
Moderate
73
21
32
16
95
Moderate
66
17
46
14
82
Good
43
9
22
10
87
Moderate
73
21
36
16
90
Good
22
4
16
5
65
Moderate
73
21
32
14
83
Moderate
53
10
16
10
100
Moderate
64
16
28
11
89
Moderate
55
11
14
11
86
Moderate
58
13
16
3
93
Good
22
4
24
7
67
Moderate
56
12
33
12
100
Moderate
56
12
44
14
100
Good
28
5
25
12
93
Moderate
79
24
87
14
81
Good
39
7
13
11
89
Good
20
4
21
7
67
Moderate
53
10
30
12
94
Moderate
56
12
18
9
90
Moderate
60
14
45
15
90
Good
39
7
22
12
88
Moderate
56
12
19
10
94
Moderate
53
10
14
14
70
Moderate
56
12
50
13
58
Moderate
77
23
56
13
93
Good
39
7
13
7
100
Good
44
8
19
17
30
Moderate
53
10
15
9
92
Good
28
5
9
14
74
Good
25
4
27
13
87
Moderate
55
11
15
8
100
Moderate
53
10
27
13
87
Good
39
7
27
12
93
Moderate
62
15
28
13
87
Moderate
67
18
32
9
82
Good
42
9
11
5
99
Moderate
55
11
24
12
84
Good
50
9
33
20
31

United States's Metro Cities

Air Quality Index

Chicago City AQI

Chicago

53

temp.7°C
hum.63%
Los Angeles City AQI

Los Angeles

73

temp.16°C
hum.90%
Minneapolis City AQI

Minneapolis

25

temp.5°C
hum.86%
Nashville City AQI

Nashville

33

temp.5°C
hum.86%
New Orleans City AQI

New Orleans

58

temp.11°C
hum.89%
New York City City AQI

New York City

18

temp.10°C
hum.41%
San Francisco City AQI

San Francisco

61

temp.12°C
hum.89%
Washington City AQI

Washington

11

temp.8°C
hum.63%

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

Must turn on the air purifier to enjoy fresh air.

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

Mild Chances of Asthma

Asthma

Risk of Asthma symptoms is Mild when AQI is Moderate (50-150)

Moderate symptoms including frequent wheezing, noticeable shortness of breath, chest tightness, and persistent cough.

Do's :

  • Limit outdoor activities when AQI is poor.

  • Clean indoor air with an air purifier to reduce exposure.

  • Soothe the respiratory tract with herbal teas or warm water to help alleviate symptoms.

Don'ts :

  • Exercise outdoors without a mask.

  • Stay in smoky areas with strong fumes.

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.

Wenatchee, United States

113
Poor
8xabove Standard

2.

Spokane Valley, United States

108
Poor
7xabove Standard

3.

Fresno, United States

104
Poor
7xabove Standard

4.

Mayfair, United States

102
Poor
7xabove Standard

5.

Colbert, United States

102
Poor
7xabove Standard

6.

Spokane, United States

100
Moderate
7xabove Standard

7.

Mead, United States

99
Moderate
7xabove Standard

8.

Jackson, United States

97
Moderate
6xabove Standard

9.

Shafter, United States

97
Moderate
6xabove Standard

10.

Coeur d Alene, United States

97
Moderate
6xabove Standard

Last Updated: 01 Nov 2025, 10:52 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 55 (Moderate). This was last updated 2025-11-01 04:17:27 PM (Local Time).

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

The best AQI level was 46 (Good) at 7:04 AM, Oct 31, 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 58 (Moderate) at 1:04 AM (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 58 at 1:04 AM (Local Time), lowest 46 at 7:04 AM, Oct 31, 2025 (Local Time).

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

Current AQI 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.

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

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

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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?

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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

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7 Aug 2025Shakshi
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Prana Sense

Air Quality Monitor

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

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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.

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