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California Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-10-26 10:59:29 AM (Local Time)

location image
Live AQI
40(AQI-US)
Air Quality is
Good
pm10 :  21 µg/m³
PM2.5 :  8 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level.webp in California
overcast

14 °C

Overcast
Humidity
Humidity53 %
Wind Speed
Wind Speed4 km/h
UV Index
UV Index0
Last Updated: 2025-10-26 10:59:29 AM (Local Time)
Map

California

Major Air Pollutants

California

PM2.5's Icon

Particulate Matter(PM2.5)

8µg/m³

PM10's Icon

Particulate Matter(PM10)

21µg/m³

CO's Icon

Carbon Monoxide(CO)

218ppb

SO2's Icon

Sulfur Dioxide(SO2)

1ppb

NO2's Icon

Nitrogen Dioxide(NO2)

9ppb

O3's Icon

Ozone(O3)

32ppb

Trending in United States

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AQI Graph

Historical Air Quality Data

California

24 Hours
AQI
California
AQI
.
24-10-2025Time25-10-2025
40
Min.at 8:04 AM on 25th Oct
48
Max.at 11:04 PM on 24th Oct

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
17
3
5
16
81
Good
44
8
22
16
85
Good
44
8
12
13
88
Moderate
86
28
33
16
87
Good
39
7
7
14
53
Good
39
7
8
16
83
Good
22
4
11
15
100
Good
18
3
19
15
93
Moderate
55
11
34
15
72
Good
39
7
16
16
83
Good
17
3
12
13
94
Good
28
5
14
14
97
Moderate
55
11
52
19
61
Moderate
53
10
45
16
80
Moderate
56
12
53
21
17
Good
28
5
7
14
100
Good
28
5
9
16
83
Good
33
6
8
16
81
Good
22
4
11
18
23
Good
45
9
13
11
26
Good
30
4
32
26
25
Good
30
4
28
26
30
Good
18
3
19
15
93
Moderate
62
15
51
16
90
Good
35
5
38
26
30
Good
34
2
37
25
28
Moderate
53
10
22
17
87
Good
28
5
10
13
93
Good
17
3
5
14
93
Moderate
53
10
19
13
93
Moderate
59
14
23
16
88
Good
22
4
10
22
19
Good
22
4
12
9
71
Good
17
3
10
16
86
Moderate
80
7
114
17
52
Good
50
9
24
16
86
Good
42
8
12
13
88
Good
33
6
23
17
70
Good
44
8
13
13
94
Good
18
3
19
16
86
Moderate
60
14
23
17
80
Good
33
6
9
16
83
Moderate
68
18
32
17
78
Good
30
6
8
14
84
Good
50
9
19
17
81
Good
17
3
15
12
77
Moderate
56
9
64
18
72
Good
33
6
9
15
81
Moderate
60
14
32
16
80
Moderate
58
13
23
17
80
Moderate
53
10
49
19
61
Good
50
9
18
16
82
Moderate
58
5
69
26
30
Good
39
7
13
16
86
Good
25
4
13
15
100
Good
11
2
3
16
81
Good
22
4
23
12
86
Good
33
6
11
15
89
Good
28
5
7
14
100
Good
39
7
24
15
90
Moderate
60
14
28
17
80
Good
33
6
6
15
100
Moderate
62
15
53
17
84
Good
39
7
18
13
60
Good
44
8
17
10
69
Moderate
59
14
20
14
93
Moderate
54
11
22
17
81
Moderate
90
30
34
16
87
Good
28
5
8
15
100
Moderate
62
15
29
17
80
Good
11
2
4
14
94
Moderate
89
30
44
17
83
Good
17
2
18
13
93
Good
33
6
12
13
91
Good
17
3
12
16
86
Good
33
6
9
14
100
Moderate
80
24
38
17
78
Good
22
4
7
16
81
Good
39
7
11
14
89
Moderate
55
11
54
17
36
Good
28
5
16
12
86
Good
11
2
4
14
94
Moderate
60
14
27
17
80
Good
44
8
28
17
78
Good
44
8
29
17
52
Good
28
5
7
10
94
Moderate
67
18
46
17
84
Good
22
4
8
17
17
Moderate
55
11
29
16
83
Good
11
2
5
14
96
Moderate
88
29
36
16
87
Moderate
64
16
30
16
80
Good
39
7
12
12
86
Moderate
68
18
21
18
52
Moderate
55
11
26
11
83
Good
39
7
9
11
26
Good
22
4
11
16
77
Good
28
5
8
14
100
Good
44
8
23
16
36
Good
22
4
6
15
81
Moderate
58
13
23
16
88
Good
17
3
16
16
100
Good
22
4
13
17
16
Moderate
59
14
22
16
87
Moderate
62
15
30
17
81
Good
28
5
7
15
81
Moderate
52
9
58
16
80
Good
44
8
22
15
83
Good
28
5
12
10
66
Good
38
7
12
11
26
Good
33
6
11
14
97
Moderate
53
10
47
19
61
Moderate
56
12
25
17
77
Good
21
4
19
11
84
Moderate
58
5
70
17
52
Good
33
6
19
15
83
Good
37
7
17
15
87
Moderate
71
20
31
17
80
Good
22
4
11
17
17
Moderate
53
10
12
15
90
Moderate
55
11
19
19
43
Good
39
7
9
17
25
Good
28
5
15
15
93
Good
11
2
5
6
73
Good
33
6
10
15
87
Good
17
3
16
15
94
Good
17
3
12
13
88
Good
22
4
6
15
88
Moderate
57
5
67
17
52
Good
22
4
6
16
81
Good
33
6
8
16
83
Good
18
3
19
15
93
Good
39
7
14
15
90
Good
22
4
11
21
19
Moderate
74
21
48
17
84
Moderate
66
17
30
17
77
Good
17
3
12
14
97
Good
22
4
10
14
84
Good
17
3
11
16
86
Good
11
2
5
14
96
Moderate
53
10
14
27
22
Good
17
3
10
16
86
Good
22
4
15
23
19
Moderate
58
13
26
17
70
Moderate
60
14
32
15
100
Good
44
8
11
16
83
Moderate
58
13
28
16
87
Good
39
7
24
15
90
Good
30
5
10
10
94
Good
28
5
8
15
81
Good
39
7
11
11
26
Moderate
90
30
47
17
83
Moderate
64
16
38
16
83
Good
22
4
11
6
61
Good
28
5
12
9
71
Good
28
5
5
14
97
Good
33
6
8
14
84
Good
39
7
8
12
61
Moderate
56
12
48
19
60
Good
22
4
6
17
83
Good
43
8
15
20
18
Good
39
7
7
16
83
Moderate
67
18
44
17
84
Moderate
53
10
20
19
43
Good
28
5
6
16
88
Good
26
5
12
16
84
Good
17
3
4
14
96
Good
32
4
35
24
27
Good
28
5
5
14
97
Moderate
58
13
49
19
60
Good
49
9
20
16
89
Moderate
57
12
18
16
81
Good
25
4
7
15
81
Good
11
2
4
14
94
Good
28
5
8
16
81
Good
28
5
16
15
93
Good
17
3
5
14
100
Good
28
5
8
16
83
Good
44
8
12
14
85
Moderate
58
13
22
13
93
Moderate
57
12
34
17
84
Good
28
5
8
14
100
Good
28
5
14
15
93
Good
17
3
14
14
97
Good
12
2
13
14
100
Good
22
4
12
22
19
Good
17
3
5
14
93
Good
33
6
9
14
89
Moderate
55
11
50
19
61
Good
44
8
15
16
83
Good
34
6
8
14
53
Moderate
60
14
20
16
87
Moderate
53
10
22
17
84
Good
34
6
14
14
68
Moderate
62
15
27
17
80
Good
28
5
19
6
56
Moderate
62
15
32
16
83
Good
39
7
11
14
89
Good
28
5
17
14
97
Good
28
5
10
14
53
Good
22
4
12
10
66
Good
28
5
15
6
56
Moderate
60
14
23
14
93
Good
33
6
29
15
90
Good
39
7
30
17
80
Moderate
81
25
44
17
84
Good
11
2
3
14
97
Good
28
5
19
5
100
Good
28
5
12
15
90
Good
44
8
12
12
86
Moderate
79
24
49
17
84
Good
33
6
13
16
80
Good
33
6
9
15
87
Good
17
3
15
17
100
Moderate
56
12
55
17
38
Moderate
72
20
37
17
80
Good
39
7
10
8
76
Good
28
5
18
26
30
Good
39
7
12
12
86
Good
17
3
10
16
86
Good
22
4
17
15
100
Good
39
7
10
14
89
Good
28
5
17
15
94
Good
46
8
32
17
80
Good
33
6
20
17
78
Good
43
8
20
14
70
Good
16
3
5
8
75
Good
17
3
9
16
85
Good
44
8
38
17
52

United States's Metro Cities

Air Quality Index

Chicago City AQI

Chicago

56

temp.11°C
hum.63%
Los Angeles City AQI

Los Angeles

62

temp.17°C
hum.80%
Minneapolis City AQI

Minneapolis

47

temp.8°C
hum.65%
Nashville City AQI

Nashville

33

temp.18°C
hum.46%
New Orleans City AQI

New Orleans

22

temp.24°C
hum.88%
New York City City AQI

New York City

34

temp.10°C
hum.68%
San Francisco City AQI

San Francisco

57

temp.16°C
hum.81%
Washington City AQI

Washington

40

temp.8°C
hum.87%

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.

Pomona, United States

90
Moderate
6xabove Standard

2.

La Habra, United States

88
Moderate
6xabove Standard

3.

Kalamazoo, United States

88
Moderate
6xabove Standard

4.

Gordonville, United States

86
Moderate
6xabove Standard

5.

Anaheim, United States

86
Moderate
6xabove Standard

6.

Lima, United States

86
Moderate
6xabove Standard

7.

Fairfield, United States

86
Moderate
6xabove Standard

8.

Grand Rapids, United States

85
Moderate
6xabove Standard

9.

Manistee, United States

84
Moderate
6xabove Standard

10.

Leacock, United States

84
Moderate
6xabove Standard

Last Updated: 26 Oct 2025, 05:35 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 40 (Good). This was last updated 2025-10-26 10:59:29 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, Oct 25, 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 11:04 PM, Oct 24, 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 have been fluctuating throughout the last 24 hours. The levels have increased by highest 48 at 11:04 PM, Oct 24, 2025 (Local Time), lowest 40 at 8:04 AM, Oct 25, 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.

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
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
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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