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California Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-11-03 10:00:01 PM (Local Time)

location image
Live AQI
48(AQI-US)
Air Quality is
Good
pm10 :  24 µg/m³
PM2.5 :  11 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi good level.webp in California
mist

16 °C

Mist
Humidity
Humidity87 %
Wind Speed
Wind Speed4 km/h
UV Index
UV Index1
Last Updated: 2025-11-03 10:00:01 PM (Local Time)
Map

California

Major Air Pollutants

California

PM2.5's Icon

Particulate Matter(PM2.5)

11µg/m³

PM10's Icon

Particulate Matter(PM10)

24µg/m³

CO's Icon

Carbon Monoxide(CO)

334ppb

SO2's Icon

Sulfur Dioxide(SO2)

1ppb

NO2's Icon

Nitrogen Dioxide(NO2)

13ppb

O3's Icon

Ozone(O3)

18ppb

AQI Graph

Historical Air Quality Data

California

24 Hours
AQI
California
AQI
.
02-11-2025Time03-11-2025
46
Min.at 10:04 AM on 2nd Nov
57
Max.at 10:04 PM on 2nd 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
33
6
9
10
96
Good
22
4
10
13
100
Good
50
9
17
16
59
Moderate
53
10
38
16
87
Good
28
5
9
9
93
Moderate
66
17
20
10
96
Good
50
9
19
13
94
Good
28
5
11
11
100
Moderate
56
14
41
14
48
Good
26
5
21
11
100
Moderate
53
10
19
15
63
Moderate
62
15
35
11
96
Moderate
75
22
60
13
69
Good
25
3
27
18
40
Good
44
8
45
15
36
Good
33
6
9
12
96
Good
33
6
9
12
100
Good
44
8
12
10
96
Good
17
3
10
1
64
Good
20
4
10
1
64
Good
39
5
42
14
36
Good
37
4
33
18
34
Good
28
5
12
11
100
Moderate
60
14
42
13
100
Moderate
73
10
100
18
34
Good
26
3
28
18
34
Good
50
9
17
16
90
Good
17
3
16
9
97
Good
46
8
22
16
90
Moderate
73
21
49
16
88
Good
17
3
11
9
54
Good
44
8
10
5
93
Good
33
6
12
13
77
Good
22
4
12
13
64
Moderate
80
25
42
16
92
Good
50
9
12
10
98
Moderate
58
13
26
13
89
Good
50
9
17
15
63
Moderate
53
10
19
11
89
Moderate
75
22
46
16
87
Moderate
55
11
17
10
96
Moderate
55
11
17
10
96
Moderate
95
32
47
9
97
Good
25
4
10
9
93
Moderate
89
30
51
17
86
Moderate
54
10
12
13
93
Good
36
4
38
13
58
Moderate
55
11
16
11
89
Good
48
9
26
11
90
Moderate
79
24
50
16
87
Moderate
73
21
61
13
69
Moderate
68
18
30
13
100
Good
50
9
46
18
34
Moderate
62
15
26
15
90
Good
48
10
18
11
94
Good
17
3
5
10
96
Good
46
8
11
11
100
Good
28
5
10
12
93
Good
33
6
9
12
96
Good
39
7
13
15
90
Moderate
75
22
43
16
87
Good
50
9
14
12
94
Moderate
96
33
60
12
100
Good
50
9
18
15
18
Good
39
7
11
10
54
Good
47
8
15
12
97
Moderate
69
19
35
13
99
Moderate
53
10
38
16
87
Good
39
7
14
13
94
Moderate
73
21
46
16
87
Good
22
4
7
9
100
Moderate
55
11
26
12
100
Good
50
9
15
16
90
Moderate
52
10
17
16
61
Good
50
9
15
12
86
Good
44
8
12
11
100
Poor
108
38
52
9
97
Good
50
9
14
12
93
Good
44
8
10
10
96
Good
39
7
19
15
36
Good
39
7
16
10
100
Good
28
5
7
9
100
Moderate
75
22
45
16
87
Good
40
6
44
9
97
Good
37
4
40
18
40
Moderate
60
14
18
17
36
Moderate
100
35
48
12
100
Good
17
3
11
10
26
Good
44
8
27
10
89
Good
30
3
33
10
100
Moderate
53
10
36
16
87
Moderate
56
12
42
11
91
Good
50
9
15
10
100
Moderate
62
15
24
8
56
Good
39
7
24
16
27
Good
22
4
9
2
51
Moderate
55
11
18
11
100
Good
22
4
6
12
96
Moderate
55
11
19
14
100
Good
50
9
16
11
89
Moderate
73
21
48
16
88
Good
28
5
11
13
99
Good
17
3
12
10
26
Moderate
72
20
51
16
87
Moderate
71
20
44
16
86
Good
50
9
14
13
94
Good
39
7
16
13
58
Moderate
65
16
22
10
89
Good
44
8
12
5
93
Good
32
6
12
2
51
Moderate
72
20
37
11
96
Moderate
75
22
61
13
69
Moderate
71
20
40
14
94
Good
47
9
11
10
100
Good
36
4
39
13
64
Moderate
56
12
25
10
89
Moderate
60
14
21
11
92
Good
22
2
24
10
96
Good
17
3
11
10
26
Moderate
71
20
34
11
93
Good
44
8
14
9
57
Good
22
4
8
7
42
Good
19
3
21
11
100
Good
39
7
9
11
86
Good
22
4
9
12
100
Good
28
5
11
11
100
Moderate
53
10
19
16
59
Good
28
5
8
12
100
Good
28
4
30
13
64
Good
44
9
14
10
96
Moderate
68
18
23
10
96
Good
28
5
11
11
100
Good
33
6
24
15
90
Good
17
3
12
9
48
Moderate
89
29
52
12
100
Good
26
3
25
11
94
Good
28
5
11
12
100
Good
28
5
10
13
77
Moderate
53
10
15
12
86
Good
20
3
22
10
100
Good
17
3
12
18
40
Good
44
8
13
13
77
Good
28
3
30
16
35
Moderate
66
17
36
13
89
Moderate
69
19
40
15
31
Good
28
5
21
8
93
Moderate
73
21
44
16
87
Good
39
7
12
15
90
Moderate
53
10
17
17
45
Moderate
55
11
16
11
89
Good
22
4
10
1
64
Moderate
55
11
32
12
100
Moderate
64
16
44
10
89
Good
44
8
12
-2
93
Good
44
8
12
5
93
Moderate
64
16
17
17
39
Good
32
6
9
9
93
Good
28
5
8
8
95
Moderate
58
13
62
13
58
Good
28
5
8
12
100
Good
35
6
18
10
45
Moderate
78
24
25
10
96
Poor
102
36
50
12
100
Good
44
8
15
9
57
Good
44
8
16
14
80
Moderate
54
11
22
11
83
Good
11
2
8
10
100
Good
25
4
27
16
45
Moderate
62
15
17
17
36
Moderate
66
17
75
13
58
Moderate
72
20
32
14
97
Moderate
56
12
17
10
96
Moderate
56
12
17
14
93
Good
17
3
7
9
100
Moderate
56
12
17
10
96
Good
21
2
23
11
100
Good
44
8
13
12
96
Good
39
7
11
10
96
Good
11
2
2
8
100
Moderate
53
10
22
16
90
Moderate
62
15
26
12
100
Good
22
4
6
12
96
Good
12
2
13
11
100
Good
28
5
11
12
100
Good
39
7
13
11
100
Good
44
3
47
9
54
Good
17
3
16
11
93
Good
28
5
5
10
96
Moderate
79
24
58
13
69
Good
33
6
22
8
93
Good
34
6
8
9
93
Moderate
74
22
52
16
87
Good
50
9
9
12
100
Moderate
56
12
20
15
26
Moderate
73
21
45
16
87
Good
22
4
14
4
55
Good
50
9
24
10
89
Good
22
4
7
10
96
Moderate
60
14
37
11
96
Good
39
7
9
9
93
Good
44
8
10
5
93
Good
22
4
11
11
43
Moderate
53
10
22
12
97
Good
39
7
20
15
90
Good
21
2
23
10
96
Moderate
68
18
33
12
100
Good
44
8
16
11
96
Good
20
4
13
4
63
Moderate
57
12
21
11
93
Moderate
52
10
14
10
100
Moderate
75
22
46
12
100
Good
22
4
15
12
93
Good
22
4
6
12
100
Good
28
5
10
13
99
Moderate
53
10
30
16
35
Moderate
97
34
48
10
96
Good
28
5
8
9
93
Good
28
5
19
18
34
Good
50
9
13
10
100
Good
17
3
10
12
82
Moderate
55
11
21
13
94
Good
44
8
10
10
96
Moderate
55
11
21
13
94
Good
22
2
24
10
96
Moderate
58
13
24
14
81
Moderate
61
14
23
9
80
Good
35
6
7
7
94
Moderate
62
15
20
11
89
Good
23
3
25
18
40

United States's Metro Cities

Air Quality Index

Chicago City AQI

Chicago

39

temp.9°C
hum.66%
Los Angeles City AQI

Los Angeles

71

temp.16°C
hum.87%
Minneapolis City AQI

Minneapolis

22

temp.8°C
hum.51%
Nashville City AQI

Nashville

22

temp.5°C
hum.93%
New Orleans City AQI

New Orleans

22

temp.16°C
hum.55%
New York City City AQI

New York City

60

temp.14°C
hum.57%
San Francisco City AQI

San Francisco

56

temp.10°C
hum.96%
Washington City AQI

Washington

55

temp.13°C
hum.86%

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.

Hanford, United States

108
Poor
7xabove Standard

2.

Fort Bliss, United States

106
Poor
7xabove Standard

3.

Maricopa, United States

104
Poor
7xabove Standard

4.

Riverside, United States

103
Poor
7xabove Standard

5.

Tolleson, United States

101
Poor
7xabove Standard

6.

Fontana, United States

99
Moderate
7xabove Standard

7.

Jurupa Valley, United States

98
Moderate
7xabove Standard

8.

Upland, United States

96
Moderate
6xabove Standard

9.

Corcoran, United States

95
Moderate
6xabove Standard

10.

Ontario, United States

95
Moderate
6xabove Standard

Last Updated: 03 Nov 2025, 04:36 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 48 (Good). This was last updated 2025-11-03 10:00:01 PM (Local Time).

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

The best AQI level was 46 (Good) at 10:04 AM, Nov 2, 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 57 (Moderate) at 10:04 PM, Nov 2, 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 57 at 10:04 PM, Nov 2, 2025 (Local Time), lowest 46 at 10:04 AM, Nov 2, 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.

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

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The AQI Divide: Unveiling the True Air Quality in Delhi

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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

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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
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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