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California Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-10-17 12:46:17 PM (Local Time)

location image
Live AQI
46(AQI-US)
Air Quality is
Good
pm10 :  22 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
clear

16 °C

Clear
Humidity
Humidity72 %
Wind Speed
Wind Speed4 km/h
UV Index
UV Index0
Last Updated: 2025-10-17 12:46:17 PM (Local Time)
Map

California

Major Air Pollutants

California

PM2.5's Icon

Particulate Matter(PM2.5)

9µg/m³

PM10's Icon

Particulate Matter(PM10)

22µg/m³

CO's Icon

Carbon Monoxide(CO)

361ppb

SO2's Icon

Sulfur Dioxide(SO2)

0ppb

NO2's Icon

Nitrogen Dioxide(NO2)

20ppb

O3's Icon

Ozone(O3)

23ppb

Trending in United States

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What’s the Connection Between Air Pollution and Blood Cancer?

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AQI Graph

Historical Air Quality Data

California

24 Hours
AQI
California
AQI
.
16-10-2025Time17-10-2025
34
Min.at 8:04 AM on 16th Oct
46
Max.at 12:04 AM on 17th 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
50
9
15
18
99
Good
33
6
8
14
74
Good
50
9
25
10
82
Good
32
0
36
1
10
Good
44
8
13
15
78
Moderate
58
13
17
13
100
Moderate
53
10
23
14
100
Moderate
53
10
16
13
100
Moderate
55
12
31
10
89
Good
41
7
10
8
42
Good
50
9
29
12
96
Moderate
66
17
26
12
100
Moderate
72
20
44
16
94
Good
44
8
28
15
65
Good
39
7
8
12
56
Good
39
7
24
16
94
Moderate
56
12
19
17
98
Good
44
8
14
16
100
Good
7
0
8
15
49
Good
44
8
9
9
69
Good
39
7
25
22
49
Good
42
8
13
22
44
Good
50
9
26
14
100
Good
40
6
43
20
81
Moderate
55
11
51
20
36
Good
44
8
16
20
63
Good
39
7
7
22
70
Good
44
8
17
11
90
Good
46
8
21
18
76
Good
42
8
24
16
94
Good
6
0
6
13
50
Moderate
58
13
17
5
62
Good
42
8
16
14
89
Good
20
0
21
16
42
Good
40
7
37
16
82
Good
42
8
24
13
100
Moderate
52
10
21
14
94
Moderate
53
10
30
9
92
Good
47
8
36
14
100
Good
50
9
22
19
99
Moderate
66
17
20
17
100
Moderate
60
14
17
14
90
Moderate
63
16
22
14
100
Good
36
6
12
12
77
Good
44
8
19
17
99
Good
17
1
18
12
92
Good
39
7
36
12
60
Moderate
62
15
18
18
100
Moderate
62
15
26
12
92
Moderate
73
21
32
15
96
Good
37
7
15
16
85
Good
44
8
31
19
46
Good
47
8
17
16
78
Good
47
8
22
14
99
Moderate
53
10
18
17
100
Good
19
0
20
10
100
Moderate
55
11
18
15
93
Good
33
6
30
13
96
Good
44
8
26
16
74
Good
50
9
28
15
87
Moderate
58
12
20
12
99
Moderate
55
11
25
14
67
Good
50
9
16
15
100
Good
33
6
20
16
77
Moderate
52
10
10
16
76
Moderate
54
12
24
13
100
Good
30
0
32
1
10
Good
44
8
10
13
100
Good
44
8
25
19
82
Moderate
52
10
13
14
94
Good
42
8
18
17
71
Good
42
8
21
16
81
Moderate
53
10
28
9
90
Good
48
9
21
12
100
Moderate
58
13
16
18
93
Moderate
78
24
26
14
100
Moderate
55
11
19
13
100
Moderate
53
10
15
12
100
Good
39
7
41
13
66
Good
50
9
28
14
97
Good
48
9
12
14
92
Good
44
8
27
16
100
Good
44
8
22
12
98
Good
44
8
12
19
62
Good
50
9
22
11
98
Moderate
58
13
42
18
74
Good
6
0
6
13
40
Moderate
75
22
37
13
79
Good
36
6
24
14
94
Good
39
7
24
20
72
Moderate
58
12
27
17
78
Good
39
7
19
12
99
Good
39
7
15
15
76
Good
50
9
20
9
82
Good
39
7
10
10
84
Moderate
55
11
31
13
97
Good
39
7
30
13
100
Good
33
6
25
13
84
Moderate
56
12
14
16
98
Good
50
9
21
18
98
Moderate
52
10
15
12
100
Good
7
0
8
14
40
Good
50
9
18
16
85
Good
48
9
29
17
87
Good
44
8
12
15
100
Good
39
7
11
11
66
Moderate
56
12
27
12
100
Moderate
60
14
19
5
82
Good
36
6
12
12
97
Moderate
68
18
32
16
94
Moderate
71
20
40
17
99
Moderate
69
19
27
15
100
Good
29
4
20
12
94
Good
24
1
26
18
42
Moderate
58
13
25
14
98
Moderate
54
11
29
13
100
Good
39
7
23
8
81
Good
6
0
6
14
41
Good
47
8
24
14
97
Good
28
5
5
11
67
Good
28
5
5
9
82
Good
12
0
13
1
10
Good
7
0
8
14
69
Moderate
53
10
18
15
92
Good
44
8
16
13
100
Good
47
8
34
11
94
Moderate
55
11
15
14
100
Good
39
7
20
20
49
Moderate
54
11
17
14
96
Moderate
60
14
17
13
100
Moderate
53
10
15
13
100
Moderate
52
10
20
16
78
Good
5
0
6
14
45
Moderate
52
10
34
16
68
Good
47
9
22
10
75
Moderate
53
10
17
13
97
Good
39
7
20
13
71
Good
44
8
19
13
100
Good
50
9
20
15
100
Good
50
9
9
13
67
Good
36
6
16
12
98
Good
7
0
8
16
46
Moderate
66
17
30
16
100
Good
44
8
34
18
97
Good
39
7
14
9
33
Moderate
53
10
27
16
76
Moderate
53
10
27
18
62
Moderate
53
10
27
11
89
Moderate
55
11
18
15
100
Good
39
7
7
10
72
Good
39
7
22
15
59
Moderate
59
14
22
14
100
Moderate
62
15
16
1
100
Moderate
60
14
16
5
87
Moderate
53
10
14
9
98
Good
44
8
12
14
75
Good
31
5
14
13
86
Moderate
58
13
38
15
73
Moderate
55
11
19
15
100
Good
36
6
9
12
65
Moderate
58
13
14
15
96
Moderate
56
12
44
18
76
Good
44
8
9
12
81
Moderate
56
12
20
15
100
Good
46
8
19
14
99
Good
50
9
17
13
100
Good
41
7
17
22
49
Moderate
55
11
15
11
100
Moderate
58
13
31
14
69
Good
39
7
29
16
90
Moderate
57
12
22
17
100
Good
43
8
16
16
96
Good
44
8
12
17
100
Moderate
53
10
15
16
88
Good
13
0
14
1
10
Good
50
9
13
18
100
Moderate
55
11
14
19
84
Moderate
52
10
18
14
97
Good
33
6
27
18
85
Moderate
62
15
30
16
70
Good
39
7
25
14
100
Good
15
0
16
1
10
Moderate
53
10
19
11
97
Good
50
9
12
14
83
Good
8
0
9
16
43
Good
39
7
19
11
89
Good
50
9
16
14
100
Moderate
73
21
38
16
100
Good
33
6
17
12
100
Good
48
10
14
11
72
Good
47
8
16
15
91
Good
48
9
26
16
60
Moderate
52
10
20
11
100
Good
44
8
20
18
85
Good
21
0
23
1
89
Moderate
58
13
28
13
96
Moderate
56
12
25
15
100
Moderate
62
15
32
13
100
Moderate
55
11
12
11
67
Moderate
58
12
14
4
76
Good
31
0
34
1
79
Good
50
9
21
16
85
Moderate
52
10
34
16
86
Moderate
55
11
23
13
92
Moderate
69
19
49
19
60
Moderate
52
10
10
16
96
Good
29
0
31
0
94
Good
44
8
23
17
92
Good
42
8
19
13
97
Moderate
53
10
29
16
75
Moderate
57
12
24
12
96
Moderate
52
10
14
16
100
Moderate
55
11
16
13
92
Good
39
7
26
14
70
Moderate
68
18
24
14
100
Good
15
0
16
12
81
Good
39
7
8
23
42
Good
39
7
9
13
100
Good
36
6
26
16
80
Good
50
9
35
13
100
Moderate
55
11
16
12
96
Moderate
54
10
35
14
100
Moderate
53
10
25
11
91
Good
44
8
42
14
100
Moderate
55
11
24
12
100
Good
32
5
18
12
84
Good
42
8
15
8
100
Good
33
6
15
14
74

United States's Metro Cities

Air Quality Index

Chicago City AQI

Chicago

32

temp.16°C
hum.47%
Los Angeles City AQI

Los Angeles

47

temp.15°C
hum.83%
Minneapolis City AQI

Minneapolis

61

temp.18°C
hum.84%
Nashville City AQI

Nashville

44

temp.17°C
hum.65%
New Orleans City AQI

New Orleans

58

temp.22°C
hum.87%
New York City City AQI

New York City

16

temp.9°C
hum.44%
San Francisco City AQI

San Francisco

58

temp.12°C
hum.93%
Washington City AQI

Washington

16

temp.5°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.

Prairieville, United States

144
Poor
10xabove Standard

2.

French Settlement, United States

142
Poor
9xabove Standard

3.

Fort Bliss, United States

139
Poor
9xabove Standard

4.

Springfield, United States

116
Poor
8xabove Standard

5.

Sweet Home, United States

112
Poor
7xabove Standard

6.

El Paso, United States

101
Poor
7xabove Standard

7.

Socorro, United States

97
Moderate
6xabove Standard

8.

Nogales, United States

95
Moderate
6xabove Standard

9.

Gulfport, United States

94
Moderate
6xabove Standard

10.

Nevada, United States

94
Moderate
6xabove Standard

Last Updated: 17 Oct 2025, 07:31 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 46 (Good). This was last updated 2025-10-17 12:46:17 PM (Local Time).

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

The best AQI level was 34 (Good) at 8:04 AM, Oct 16, 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 46 (Good) at 12:04 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 46 at 12:04 AM (Local Time), lowest 34 at 8:04 AM, Oct 16, 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

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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