What is the sulfur dioxide (SO2) level in Fountain Valley, California at the moment?

Currently, Fountain Valley, California has a sulfur dioxide (SO2) concentration of 0.554 ppb.

What is the ozone (O3) level in Fountain Valley, California at the moment?

The current ozone (O3) level in Fountain Valley, California at the moment is 38.132 ppm.

What is the nitrogen dioxide (NO2) level in Fountain Valley, California at the moment?

Nitrogen dioxide (NO2) level in Fountain Valley, California at the moment is 8.417 ppb.

Live air quality index in Fountain Valley, California today

Q: What is the PM2.5 level in Fountain Valley, California at the moment?

PM2.5 levels in Fountain Valley, California are currently 5.227 μg/m3.

Q: What is the PM10 level in Fountain Valley, California at the moment?

The PM10 concentration in Fountain Valley, California is 17.876 μg/m3 at the moment.

Stay updated with real-time air quality in Fountain Valley, California featuring accurate data on AQI, PM_2.5, PM₁₀, O₃, NO₂, SO₂, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

Good

Fountain Valley, California

Last updated: ... (Local time)

Major air pollutants in Fountain Valley, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

5.23 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

17.88 μg/m³

155

255

425

605+

Ozone (O₃)

38.13 ppb

201

201+

Sulfur Dioxide (SO₂)

0.55 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

8.42 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.32 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Very high

Fountain Valley, California

Get Live Pollen Counts

Fountain Valley, California

Scroll To Air Quality Map

Track live Fountain Valley, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-22T11:00:00.000Z	22 \| good	3.037 \| good	7.236 \| good	24.195 \| good	0.514 \| good	3.609 \| good	0.403 \| good
2026-04-22T12:00:00.000Z	22 \| good	3.261 \| good	7.204 \| good	23.7 \| good	0.424 \| good	7.338 \| good	0.503 \| good
2026-04-22T13:00:00.000Z	22 \| good	4.122 \| good	8.913 \| good	24.004 \| good	0.539 \| good	14.025 \| good	0.715 \| good
2026-04-22T14:00:00.000Z	38 \| good	6.525 \| good	30.718 \| good	24.673 \| good	0.447 \| good	21.043 \| good	0.731 \| good
2026-04-22T15:00:00.000Z	27 \| good	5.456 \| good	24.413 \| good	27.401 \| good	0.544 \| good	20.836 \| good	0.6 \| good
2026-04-22T16:00:00.000Z	29 \| good	4.967 \| good	26.844 \| good	30.562 \| good	0.656 \| good	15.551 \| good	0.487 \| good
2026-04-22T17:00:00.000Z	32 \| good	3.055 \| good	14.691 \| good	34.935 \| good	0.456 \| good	10.384 \| good	0.412 \| good
2026-04-22T18:00:00.000Z	31 \| good	2.617 \| good	10.689 \| good	34.228 \| good	0.573 \| good	8.055 \| good	0.396 \| good
2026-04-22T19:00:00.000Z	35 \| good	2.972 \| good	12.924 \| good	37.733 \| good	0.519 \| good	9.382 \| good	0.396 \| good
2026-04-22T20:00:00.000Z	40 \| good	2.743 \| good	9.746 \| good	42.71 \| good	0.517 \| good	11.186 \| good	0.342 \| good
2026-04-22T21:00:00.000Z	44 \| good	4.031 \| good	14.407 \| good	47.625 \| good	0.466 \| good	5.486 \| good	0.342 \| good
2026-04-22T22:00:00.000Z	44 \| good	4.517 \| good	31.439 \| good	47.553 \| good	0.441 \| good	7.043 \| good	0.331 \| good
2026-04-22T23:00:00.000Z	44 \| good	4.614 \| good	13.645 \| good	48.267 \| good	0.438 \| good	5.906 \| good	0.331 \| good
2026-04-23T00:00:00.000Z	47 \| good	2.986 \| good	17.086 \| good	50.99 \| good	0.434 \| good	6.644 \| good	0.34 \| good
2026-04-23T01:00:00.000Z	49 \| good	2.878 \| good	13.586 \| good	53.293 \| good	0.409 \| good	4.5 \| good	0.34 \| good
2026-04-23T02:00:00.000Z	42 \| good	3.805 \| good	20.122 \| good	44.893 \| good	0.432 \| good	4.639 \| good	0.34 \| good
2026-04-23T03:00:00.000Z	44 \| good	3.945 \| good	16.722 \| good	47.736 \| good	0.407 \| good	3.953 \| good	0.393 \| good
2026-04-23T04:00:00.000Z	42 \| good	3.888 \| good	11.746 \| good	44.61 \| good	0.431 \| good	3.937 \| good	0.405 \| good
2026-04-23T05:00:00.000Z	39 \| good	3.047 \| good	12.571 \| good	42.47 \| good	0.707 \| good	4.286 \| good	0.404 \| good
2026-04-23T06:00:00.000Z	39 \| good	4.886 \| good	16.354 \| good	41.598 \| good	0.58 \| good	8.017 \| good	0.521 \| good
2026-04-23T07:00:00.000Z	33 \| good	5.506 \| good	14.923 \| good	33.684 \| good	0.576 \| good	6.407 \| good	0.533 \| good
2026-04-23T08:00:00.000Z	31 \| good	2.521 \| good	32.509 \| good	32.688 \| good	0.634 \| good	9.856 \| good	0.417 \| good
2026-04-23T09:00:00.000Z	27 \| good	5.004 \| good	18.811 \| good	27.068 \| good	0.605 \| good	8.42 \| good	0.326 \| good
2026-04-23T10:00:00.000Z	23 \| good	2.592 \| good	10.592 \| good	24.754 \| good	0.569 \| good	8.265 \| good	0.35 \| good
2026-04-23T11:00:00.000Z	22 \| good	3.833 \| good	10.087 \| good	22.447 \| good	0.712 \| good	8.36 \| good	0.341 \| good
2026-04-23T12:00:00.000Z	27 \| good	4.581 \| good	9.189 \| good	22.142 \| good	0.561 \| good	10.917 \| good	0.35 \| good
2026-04-23T13:00:00.000Z	27 \| good	4.988 \| good	16.861 \| good	26.583 \| good	0.68 \| good	12.817 \| good	0.514 \| good
2026-04-23T14:00:00.000Z	22 \| good	4.25 \| good	18.641 \| good	23.568 \| good	0.74 \| good	19.287 \| good	0.61 \| good
2026-04-23T15:00:00.000Z	38 \| good	6.85 \| good	29.98 \| good	22.485 \| good	0.766 \| good	17.495 \| good	0.563 \| good
2026-04-23T16:00:00.000Z	38 \| good	6.51 \| good	18.366 \| good	24.298 \| good	0.788 \| good	14.706 \| good	0.5 \| good
2026-04-23T17:00:00.000Z	30 \| good	4.354 \| good	16.842 \| good	31.617 \| good	0.781 \| good	13.282 \| good	0.43 \| good
2026-04-23T18:00:00.000Z	37 \| good	5.099 \| good	18.039 \| good	40.248 \| good	0.785 \| good	12.979 \| good	0.422 \| good
2026-04-23T19:00:00.000Z	41 \| good	6.621 \| good	20.267 \| good	43.953 \| good	0.762 \| good	12.994 \| good	0.404 \| good
2026-04-23T20:00:00.000Z	42 \| good	6.935 \| good	21.205 \| good	45.481 \| good	0.716 \| good	11.982 \| good	0.352 \| good
2026-04-23T21:00:00.000Z	49 \| good	6.667 \| good	29.266 \| good	53.241 \| good	0.699 \| good	9.653 \| good	0.412 \| good
2026-04-23T22:00:00.000Z	47 \| good	7.855 \| good	26.962 \| good	51.356 \| good	0.725 \| good	9.667 \| good	0.412 \| good
2026-04-23T23:00:00.000Z	48 \| good	5.724 \| good	18.588 \| good	51.686 \| good	0.754 \| good	8.794 \| good	0.412 \| good
2026-04-24T00:00:00.000Z	51 \| moderate	5.651 \| good	19.956 \| good	54.89 \| good	0.69 \| good	5.532 \| good	0.422 \| good
2026-04-24T01:00:00.000Z	61 \| moderate	6.084 \| good	27.59 \| good	58.445 \| fine	0.625 \| good	3.783 \| good	0.41 \| good
2026-04-24T02:00:00.000Z	49 \| good	5.811 \| good	30.227 \| good	52.953 \| good	0.598 \| good	4.115 \| good	0.446 \| good
2026-04-24T03:00:00.000Z	52 \| moderate	9.938 \| good	44.047 \| good	48.268 \| good	2.028 \| good	7.583 \| good	0.148 \| good
2026-04-24T04:00:00.000Z	49 \| good	4.799 \| good	15.082 \| good	53.15 \| good	0.56 \| good	4.228 \| good	0.473 \| good
2026-04-24T05:00:00.000Z	46 \| good	3.65 \| good	13.285 \| good	49.86 \| good	0.679 \| good	6.93 \| good	0.472 \| good
2026-04-24T06:00:00.000Z	39 \| good	4.687 \| good	16.415 \| good	41.512 \| good	0.582 \| good	5.789 \| good	0.535 \| good
2026-04-24T07:00:00.000Z	40 \| good	5.985 \| good	18.064 \| good	42.944 \| good	0.584 \| good	7.352 \| good	0.531 \| good
2026-04-24T08:00:00.000Z	37 \| good	4.508 \| good	18.29 \| good	40.086 \| good	0.503 \| good	9.948 \| good	0.394 \| good
2026-04-24T09:00:00.000Z	35 \| good	5.227 \| good	17.876 \| good	38.132 \| good	0.554 \| good	8.417 \| good	0.323 \| good
2026-04-24T10:00:00.000Z	35 \| good	5.227 \| good	17.876 \| good	38.132 \| good	0.554 \| good	8.417 \| good	0.323 \| good
2026-04-24T11:00:00.000Z	33 \| good	5.698 \| good	24.344 \| good	35.298 \| good	1.822 \| good	8.945 \| good	0.158 \| good
2026-04-24T12:00:00.000Z	31 \| good	5.254 \| good	22.397 \| good	32.619 \| good	1.851 \| good	8.693 \| good	0.157 \| good
2026-04-24T13:00:00.000Z	33 \| good	6.452 \| good	28.33 \| good	31.736 \| good	1.894 \| good	8.145 \| good	0.159 \| good
2026-04-24T14:00:00.000Z	38 \| good	7.068 \| good	31.255 \| good	34.408 \| good	1.936 \| good	7.597 \| good	0.161 \| good
2026-04-24T15:00:00.000Z	44 \| good	7.584 \| good	33.215 \| good	42.658 \| good	1.979 \| good	7.049 \| good	0.163 \| good
2026-04-24T16:00:00.000Z	44 \| good	7.722 \| good	34.154 \| good	44.887 \| good	1.792 \| good	5.611 \| good	0.155 \| good
2026-04-24T17:00:00.000Z	44 \| good	6.723 \| good	30.029 \| good	47.961 \| good	1.606 \| good	4.172 \| good	0.147 \| good
2026-04-24T18:00:00.000Z	46 \| good	7.173 \| good	32.073 \| good	49.642 \| good	1.419 \| good	2.734 \| good	0.139 \| good
2026-04-24T19:00:00.000Z	45 \| good	6.927 \| good	31.077 \| good	48.944 \| good	1.26 \| good	2.336 \| good	0.136 \| good
2026-04-24T20:00:00.000Z	45 \| good	6.346 \| good	28.119 \| good	49.39 \| good	1.1 \| good	1.937 \| good	0.133 \| good
2026-04-24T21:00:00.000Z	47 \| good	7.634 \| good	34.004 \| good	50.876 \| good	0.94 \| good	1.539 \| good	0.13 \| good
2026-04-24T22:00:00.000Z	48 \| good	6.5 \| good	29.03 \| good	52.187 \| good	0.986 \| good	1.84 \| good	0.132 \| good
2026-04-24T23:00:00.000Z	50 \| good	5.454 \| good	23.118 \| good	53.591 \| good	1.031 \| good	2.141 \| good	0.134 \| good
2026-04-25T00:00:00.000Z	50 \| good	5.841 \| good	25.029 \| good	54.233 \| good	1.077 \| good	2.442 \| good	0.136 \| good
2026-04-25T01:00:00.000Z	50 \| good	7.546 \| good	32.993 \| good	53.868 \| good	1.278 \| good	3.524 \| good	0.14 \| good
2026-04-25T02:00:00.000Z	52 \| moderate	9.802 \| good	43.938 \| good	53.994 \| good	1.48 \| good	4.605 \| good	0.144 \| good
2026-04-25T03:00:00.000Z	52 \| moderate	9.756 \| good	43.115 \| good	50.837 \| good	1.681 \| good	5.686 \| good	0.147 \| good
2026-04-25T04:00:00.000Z	44 \| good	8.052 \| good	35.17 \| good	45.89 \| good	1.828 \| good	6.685 \| good	0.148 \| good
2026-04-25T05:00:00.000Z	39 \| good	6.564 \| good	29.085 \| good	42.227 \| good	1.975 \| good	7.684 \| good	0.149 \| good
2026-04-25T06:00:00.000Z	36 \| good	6.177 \| good	27.147 \| good	39.42 \| good	2.122 \| good	8.683 \| good	0.15 \| good
2026-04-25T07:00:00.000Z	36 \| good	5.691 \| good	24.226 \| good	38.633 \| good	2.032 \| good	7.849 \| good	0.146 \| good
2026-04-25T08:00:00.000Z	35 \| good	5.551 \| good	24.123 \| good	37.518 \| good	1.943 \| good	7.015 \| good	0.141 \| good
2026-04-25T09:00:00.000Z	31 \| good	5.474 \| good	23.256 \| good	33.931 \| good	1.853 \| good	6.181 \| good	0.137 \| good
2026-04-25T10:00:00.000Z	33 \| good	5.509 \| good	23.243 \| good	31.958 \| good	1.754 \| good	5.598 \| good	0.133 \| good
2026-04-25T11:00:00.000Z	29 \| good	5.322 \| good	22.97 \| good	31.473 \| good	1.656 \| good	5.016 \| good	0.13 \| good
2026-04-25T12:00:00.000Z	27 \| good	3.55 \| good	16.01 \| good	28.718 \| good	1.557 \| good	4.433 \| good	0.126 \| good
2026-04-25T13:00:00.000Z	28 \| good	3.791 \| good	16.166 \| good	29.876 \| good	1.467 \| good	4.238 \| good	0.126 \| good
2026-04-25T14:00:00.000Z	33 \| good	5.615 \| good	24.195 \| good	32.51 \| good	1.377 \| good	4.042 \| good	0.126 \| good
2026-04-25T15:00:00.000Z	37 \| good	5.277 \| good	23.091 \| good	39.703 \| good	1.288 \| good	3.847 \| good	0.126 \| good
2026-04-25T16:00:00.000Z	40 \| good	5.568 \| good	24.144 \| good	42.59 \| good	1.139 \| good	3.188 \| good	0.125 \| good
2026-04-25T17:00:00.000Z	42 \| good	5.204 \| good	22.082 \| good	44.791 \| good	0.991 \| good	2.529 \| good	0.124 \| good
2026-04-25T18:00:00.000Z	44 \| good	5.853 \| good	25.154 \| good	47.693 \| good	0.842 \| good	1.871 \| good	0.123 \| good
2026-04-25T19:00:00.000Z	45 \| good	5.38 \| good	23.131 \| good	49.226 \| good	0.753 \| good	1.626 \| good	0.122 \| good
2026-04-25T20:00:00.000Z	47 \| good	5.496 \| good	23.167 \| good	51.23 \| good	0.665 \| good	1.381 \| good	0.12 \| good
2026-04-25T21:00:00.000Z	46 \| good	6.712 \| good	30.077 \| good	50.188 \| good	0.576 \| good	1.136 \| good	0.119 \| good
2026-04-25T22:00:00.000Z	46 \| good	4.585 \| good	20.043 \| good	50.115 \| good	0.565 \| good	1.39 \| good	0.119 \| good
2026-04-25T23:00:00.000Z	46 \| good	3.48 \| good	15.053 \| good	49.823 \| good	0.555 \| good	1.644 \| good	0.118 \| good
2026-04-26T00:00:00.000Z	46 \| good	4.573 \| good	19.978 \| good	49.535 \| good	0.545 \| good	1.898 \| good	0.118 \| good
2026-04-26T01:00:00.000Z	45 \| good	5.144 \| good	22.052 \| good	49.14 \| good	0.588 \| good	2.24 \| good	0.118 \| good
2026-04-26T02:00:00.000Z	42 \| good	5.987 \| good	26.883 \| good	45.102 \| good	0.632 \| good	2.581 \| good	0.118 \| good
2026-04-26T03:00:00.000Z	42 \| good	6.339 \| good	28.096 \| good	45.388 \| good	0.675 \| good	2.923 \| good	0.118 \| good
2026-04-26T04:00:00.000Z	40 \| good	5.732 \| good	24.962 \| good	43.239 \| good	0.742 \| good	3.21 \| good	0.118 \| good
2026-04-26T05:00:00.000Z	39 \| good	4.801 \| good	20.978 \| good	42.313 \| good	0.808 \| good	3.498 \| good	0.118 \| good
2026-04-26T06:00:00.000Z	44 \| good	8.076 \| good	12.998 \| good	42.37 \| good	0.89 \| good	3.844 \| good	0.119 \| good
2026-04-26T07:00:00.000Z	38 \| good	3.661 \| good	16.09 \| good	40.776 \| good	0.932 \| good	3.793 \| good	0.118 \| good
2026-04-26T08:00:00.000Z	36 \| good	3.782 \| good	16.168 \| good	38.659 \| good	0.988 \| good	3.801 \| good	0.118 \| good
2026-04-26T09:00:00.000Z	33 \| good	3.645 \| good	16.062 \| good	36.041 \| good	1.044 \| good	3.808 \| good	0.118 \| good
2026-04-26T10:00:00.000Z	31 \| good	3.665 \| good	16.062 \| good	33.248 \| good	1.109 \| good	3.753 \| good	0.116 \| good

Fountain Valley

Get reliable air quality data to drive your business

Fountain Valley, California air quality map: Stay updated on AQI near you

0.35ppm

How accurate is California, USA air quality data?

Air quality and pollutant data for California, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

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Frequently asked questions

How often is air quality information updated for Fountain Valley, California?

The air quality information for Fountain Valley, California is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Fountain Valley, California at its worst?

In the past 24 hours, the air quality in Fountain Valley, California was at its worst at 01:00:00 on 2026-04-24.

When did Fountain Valley, California experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Fountain Valley, California was observed at 02:00:00 on 2026-04-23.

What is the AQI in Fountain Valley, California right now?

As of now, the AQI in Fountain Valley, California is 35, indicating Good conditions.

What is the most common type of pollution in Fountain Valley, California?

Fountain Valley, California air has the highest levels of O3.

What should I do in case of poor air quality in Fountain Valley, California?

Poor air quality in Fountain Valley, California means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Fountain Valley, California at the moment?

PM_2.5 levels in Fountain Valley, California are currently 5.227 μg/m³.

What is the PM₁₀ level in Fountain Valley, California at the moment?

The PM₁₀ concentration in Fountain Valley, California is 17.876 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Fountain Valley, California at the moment?

The current carbon monoxide (CO) concentration in Fountain Valley, California is 0.323 ppm.

What is the sulfur dioxide (SO₂) level in Fountain Valley, California at the moment?

Currently, Fountain Valley, California has a sulfur dioxide (SO₂) concentration of 0.554 ppb.

What is the ozone (O₃) level in Fountain Valley, California at the moment?

The current ozone (O₃) level in Fountain Valley, California at the moment is 38.132 ppm.

What is the nitrogen dioxide (NO₂) level in Fountain Valley, California at the moment?

Nitrogen dioxide (NO₂) level in Fountain Valley, California at the moment is 8.417 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-22T11:00:00.000Z	22 \| good	3.037 \| good	7.236 \| good	24.195 \| good	0.514 \| good	3.609 \| good	0.403 \| good
2026-04-22T12:00:00.000Z	22 \| good	3.261 \| good	7.204 \| good	23.7 \| good	0.424 \| good	7.338 \| good	0.503 \| good
2026-04-22T13:00:00.000Z	22 \| good	4.122 \| good	8.913 \| good	24.004 \| good	0.539 \| good	14.025 \| good	0.715 \| good
2026-04-22T14:00:00.000Z	38 \| good	6.525 \| good	30.718 \| good	24.673 \| good	0.447 \| good	21.043 \| good	0.731 \| good
2026-04-22T15:00:00.000Z	27 \| good	5.456 \| good	24.413 \| good	27.401 \| good	0.544 \| good	20.836 \| good	0.6 \| good
2026-04-22T16:00:00.000Z	29 \| good	4.967 \| good	26.844 \| good	30.562 \| good	0.656 \| good	15.551 \| good	0.487 \| good
2026-04-22T17:00:00.000Z	32 \| good	3.055 \| good	14.691 \| good	34.935 \| good	0.456 \| good	10.384 \| good	0.412 \| good
2026-04-22T18:00:00.000Z	31 \| good	2.617 \| good	10.689 \| good	34.228 \| good	0.573 \| good	8.055 \| good	0.396 \| good
2026-04-22T19:00:00.000Z	35 \| good	2.972 \| good	12.924 \| good	37.733 \| good	0.519 \| good	9.382 \| good	0.396 \| good
2026-04-22T20:00:00.000Z	40 \| good	2.743 \| good	9.746 \| good	42.71 \| good	0.517 \| good	11.186 \| good	0.342 \| good
2026-04-22T21:00:00.000Z	44 \| good	4.031 \| good	14.407 \| good	47.625 \| good	0.466 \| good	5.486 \| good	0.342 \| good
2026-04-22T22:00:00.000Z	44 \| good	4.517 \| good	31.439 \| good	47.553 \| good	0.441 \| good	7.043 \| good	0.331 \| good
2026-04-22T23:00:00.000Z	44 \| good	4.614 \| good	13.645 \| good	48.267 \| good	0.438 \| good	5.906 \| good	0.331 \| good
2026-04-23T00:00:00.000Z	47 \| good	2.986 \| good	17.086 \| good	50.99 \| good	0.434 \| good	6.644 \| good	0.34 \| good
2026-04-23T01:00:00.000Z	49 \| good	2.878 \| good	13.586 \| good	53.293 \| good	0.409 \| good	4.5 \| good	0.34 \| good
2026-04-23T02:00:00.000Z	42 \| good	3.805 \| good	20.122 \| good	44.893 \| good	0.432 \| good	4.639 \| good	0.34 \| good
2026-04-23T03:00:00.000Z	44 \| good	3.945 \| good	16.722 \| good	47.736 \| good	0.407 \| good	3.953 \| good	0.393 \| good
2026-04-23T04:00:00.000Z	42 \| good	3.888 \| good	11.746 \| good	44.61 \| good	0.431 \| good	3.937 \| good	0.405 \| good
2026-04-23T05:00:00.000Z	39 \| good	3.047 \| good	12.571 \| good	42.47 \| good	0.707 \| good	4.286 \| good	0.404 \| good
2026-04-23T06:00:00.000Z	39 \| good	4.886 \| good	16.354 \| good	41.598 \| good	0.58 \| good	8.017 \| good	0.521 \| good
2026-04-23T07:00:00.000Z	33 \| good	5.506 \| good	14.923 \| good	33.684 \| good	0.576 \| good	6.407 \| good	0.533 \| good
2026-04-23T08:00:00.000Z	31 \| good	2.521 \| good	32.509 \| good	32.688 \| good	0.634 \| good	9.856 \| good	0.417 \| good
2026-04-23T09:00:00.000Z	27 \| good	5.004 \| good	18.811 \| good	27.068 \| good	0.605 \| good	8.42 \| good	0.326 \| good
2026-04-23T10:00:00.000Z	23 \| good	2.592 \| good	10.592 \| good	24.754 \| good	0.569 \| good	8.265 \| good	0.35 \| good
2026-04-23T11:00:00.000Z	22 \| good	3.833 \| good	10.087 \| good	22.447 \| good	0.712 \| good	8.36 \| good	0.341 \| good
2026-04-23T12:00:00.000Z	27 \| good	4.581 \| good	9.189 \| good	22.142 \| good	0.561 \| good	10.917 \| good	0.35 \| good
2026-04-23T13:00:00.000Z	27 \| good	4.988 \| good	16.861 \| good	26.583 \| good	0.68 \| good	12.817 \| good	0.514 \| good
2026-04-23T14:00:00.000Z	22 \| good	4.25 \| good	18.641 \| good	23.568 \| good	0.74 \| good	19.287 \| good	0.61 \| good
2026-04-23T15:00:00.000Z	38 \| good	6.85 \| good	29.98 \| good	22.485 \| good	0.766 \| good	17.495 \| good	0.563 \| good
2026-04-23T16:00:00.000Z	38 \| good	6.51 \| good	18.366 \| good	24.298 \| good	0.788 \| good	14.706 \| good	0.5 \| good
2026-04-23T17:00:00.000Z	30 \| good	4.354 \| good	16.842 \| good	31.617 \| good	0.781 \| good	13.282 \| good	0.43 \| good
2026-04-23T18:00:00.000Z	37 \| good	5.099 \| good	18.039 \| good	40.248 \| good	0.785 \| good	12.979 \| good	0.422 \| good
2026-04-23T19:00:00.000Z	41 \| good	6.621 \| good	20.267 \| good	43.953 \| good	0.762 \| good	12.994 \| good	0.404 \| good
2026-04-23T20:00:00.000Z	42 \| good	6.935 \| good	21.205 \| good	45.481 \| good	0.716 \| good	11.982 \| good	0.352 \| good
2026-04-23T21:00:00.000Z	49 \| good	6.667 \| good	29.266 \| good	53.241 \| good	0.699 \| good	9.653 \| good	0.412 \| good
2026-04-23T22:00:00.000Z	47 \| good	7.855 \| good	26.962 \| good	51.356 \| good	0.725 \| good	9.667 \| good	0.412 \| good
2026-04-23T23:00:00.000Z	48 \| good	5.724 \| good	18.588 \| good	51.686 \| good	0.754 \| good	8.794 \| good	0.412 \| good
2026-04-24T00:00:00.000Z	51 \| moderate	5.651 \| good	19.956 \| good	54.89 \| good	0.69 \| good	5.532 \| good	0.422 \| good
2026-04-24T01:00:00.000Z	61 \| moderate	6.084 \| good	27.59 \| good	58.445 \| fine	0.625 \| good	3.783 \| good	0.41 \| good
2026-04-24T02:00:00.000Z	49 \| good	5.811 \| good	30.227 \| good	52.953 \| good	0.598 \| good	4.115 \| good	0.446 \| good
2026-04-24T03:00:00.000Z	52 \| moderate	9.938 \| good	44.047 \| good	48.268 \| good	2.028 \| good	7.583 \| good	0.148 \| good
2026-04-24T04:00:00.000Z	49 \| good	4.799 \| good	15.082 \| good	53.15 \| good	0.56 \| good	4.228 \| good	0.473 \| good
2026-04-24T05:00:00.000Z	46 \| good	3.65 \| good	13.285 \| good	49.86 \| good	0.679 \| good	6.93 \| good	0.472 \| good
2026-04-24T06:00:00.000Z	39 \| good	4.687 \| good	16.415 \| good	41.512 \| good	0.582 \| good	5.789 \| good	0.535 \| good
2026-04-24T07:00:00.000Z	40 \| good	5.985 \| good	18.064 \| good	42.944 \| good	0.584 \| good	7.352 \| good	0.531 \| good
2026-04-24T08:00:00.000Z	37 \| good	4.508 \| good	18.29 \| good	40.086 \| good	0.503 \| good	9.948 \| good	0.394 \| good
2026-04-24T09:00:00.000Z	35 \| good	5.227 \| good	17.876 \| good	38.132 \| good	0.554 \| good	8.417 \| good	0.323 \| good
2026-04-24T10:00:00.000Z	35 \| good	5.227 \| good	17.876 \| good	38.132 \| good	0.554 \| good	8.417 \| good	0.323 \| good
2026-04-24T11:00:00.000Z	33 \| good	5.698 \| good	24.344 \| good	35.298 \| good	1.822 \| good	8.945 \| good	0.158 \| good
2026-04-24T12:00:00.000Z	31 \| good	5.254 \| good	22.397 \| good	32.619 \| good	1.851 \| good	8.693 \| good	0.157 \| good
2026-04-24T13:00:00.000Z	33 \| good	6.452 \| good	28.33 \| good	31.736 \| good	1.894 \| good	8.145 \| good	0.159 \| good
2026-04-24T14:00:00.000Z	38 \| good	7.068 \| good	31.255 \| good	34.408 \| good	1.936 \| good	7.597 \| good	0.161 \| good
2026-04-24T15:00:00.000Z	44 \| good	7.584 \| good	33.215 \| good	42.658 \| good	1.979 \| good	7.049 \| good	0.163 \| good
2026-04-24T16:00:00.000Z	44 \| good	7.722 \| good	34.154 \| good	44.887 \| good	1.792 \| good	5.611 \| good	0.155 \| good
2026-04-24T17:00:00.000Z	44 \| good	6.723 \| good	30.029 \| good	47.961 \| good	1.606 \| good	4.172 \| good	0.147 \| good
2026-04-24T18:00:00.000Z	46 \| good	7.173 \| good	32.073 \| good	49.642 \| good	1.419 \| good	2.734 \| good	0.139 \| good
2026-04-24T19:00:00.000Z	45 \| good	6.927 \| good	31.077 \| good	48.944 \| good	1.26 \| good	2.336 \| good	0.136 \| good
2026-04-24T20:00:00.000Z	45 \| good	6.346 \| good	28.119 \| good	49.39 \| good	1.1 \| good	1.937 \| good	0.133 \| good
2026-04-24T21:00:00.000Z	47 \| good	7.634 \| good	34.004 \| good	50.876 \| good	0.94 \| good	1.539 \| good	0.13 \| good
2026-04-24T22:00:00.000Z	48 \| good	6.5 \| good	29.03 \| good	52.187 \| good	0.986 \| good	1.84 \| good	0.132 \| good
2026-04-24T23:00:00.000Z	50 \| good	5.454 \| good	23.118 \| good	53.591 \| good	1.031 \| good	2.141 \| good	0.134 \| good
2026-04-25T00:00:00.000Z	50 \| good	5.841 \| good	25.029 \| good	54.233 \| good	1.077 \| good	2.442 \| good	0.136 \| good
2026-04-25T01:00:00.000Z	50 \| good	7.546 \| good	32.993 \| good	53.868 \| good	1.278 \| good	3.524 \| good	0.14 \| good
2026-04-25T02:00:00.000Z	52 \| moderate	9.802 \| good	43.938 \| good	53.994 \| good	1.48 \| good	4.605 \| good	0.144 \| good
2026-04-25T03:00:00.000Z	52 \| moderate	9.756 \| good	43.115 \| good	50.837 \| good	1.681 \| good	5.686 \| good	0.147 \| good
2026-04-25T04:00:00.000Z	44 \| good	8.052 \| good	35.17 \| good	45.89 \| good	1.828 \| good	6.685 \| good	0.148 \| good
2026-04-25T05:00:00.000Z	39 \| good	6.564 \| good	29.085 \| good	42.227 \| good	1.975 \| good	7.684 \| good	0.149 \| good
2026-04-25T06:00:00.000Z	36 \| good	6.177 \| good	27.147 \| good	39.42 \| good	2.122 \| good	8.683 \| good	0.15 \| good
2026-04-25T07:00:00.000Z	36 \| good	5.691 \| good	24.226 \| good	38.633 \| good	2.032 \| good	7.849 \| good	0.146 \| good
2026-04-25T08:00:00.000Z	35 \| good	5.551 \| good	24.123 \| good	37.518 \| good	1.943 \| good	7.015 \| good	0.141 \| good
2026-04-25T09:00:00.000Z	31 \| good	5.474 \| good	23.256 \| good	33.931 \| good	1.853 \| good	6.181 \| good	0.137 \| good
2026-04-25T10:00:00.000Z	33 \| good	5.509 \| good	23.243 \| good	31.958 \| good	1.754 \| good	5.598 \| good	0.133 \| good
2026-04-25T11:00:00.000Z	29 \| good	5.322 \| good	22.97 \| good	31.473 \| good	1.656 \| good	5.016 \| good	0.13 \| good
2026-04-25T12:00:00.000Z	27 \| good	3.55 \| good	16.01 \| good	28.718 \| good	1.557 \| good	4.433 \| good	0.126 \| good
2026-04-25T13:00:00.000Z	28 \| good	3.791 \| good	16.166 \| good	29.876 \| good	1.467 \| good	4.238 \| good	0.126 \| good
2026-04-25T14:00:00.000Z	33 \| good	5.615 \| good	24.195 \| good	32.51 \| good	1.377 \| good	4.042 \| good	0.126 \| good
2026-04-25T15:00:00.000Z	37 \| good	5.277 \| good	23.091 \| good	39.703 \| good	1.288 \| good	3.847 \| good	0.126 \| good
2026-04-25T16:00:00.000Z	40 \| good	5.568 \| good	24.144 \| good	42.59 \| good	1.139 \| good	3.188 \| good	0.125 \| good
2026-04-25T17:00:00.000Z	42 \| good	5.204 \| good	22.082 \| good	44.791 \| good	0.991 \| good	2.529 \| good	0.124 \| good
2026-04-25T18:00:00.000Z	44 \| good	5.853 \| good	25.154 \| good	47.693 \| good	0.842 \| good	1.871 \| good	0.123 \| good
2026-04-25T19:00:00.000Z	45 \| good	5.38 \| good	23.131 \| good	49.226 \| good	0.753 \| good	1.626 \| good	0.122 \| good
2026-04-25T20:00:00.000Z	47 \| good	5.496 \| good	23.167 \| good	51.23 \| good	0.665 \| good	1.381 \| good	0.12 \| good
2026-04-25T21:00:00.000Z	46 \| good	6.712 \| good	30.077 \| good	50.188 \| good	0.576 \| good	1.136 \| good	0.119 \| good
2026-04-25T22:00:00.000Z	46 \| good	4.585 \| good	20.043 \| good	50.115 \| good	0.565 \| good	1.39 \| good	0.119 \| good
2026-04-25T23:00:00.000Z	46 \| good	3.48 \| good	15.053 \| good	49.823 \| good	0.555 \| good	1.644 \| good	0.118 \| good
2026-04-26T00:00:00.000Z	46 \| good	4.573 \| good	19.978 \| good	49.535 \| good	0.545 \| good	1.898 \| good	0.118 \| good
2026-04-26T01:00:00.000Z	45 \| good	5.144 \| good	22.052 \| good	49.14 \| good	0.588 \| good	2.24 \| good	0.118 \| good
2026-04-26T02:00:00.000Z	42 \| good	5.987 \| good	26.883 \| good	45.102 \| good	0.632 \| good	2.581 \| good	0.118 \| good
2026-04-26T03:00:00.000Z	42 \| good	6.339 \| good	28.096 \| good	45.388 \| good	0.675 \| good	2.923 \| good	0.118 \| good
2026-04-26T04:00:00.000Z	40 \| good	5.732 \| good	24.962 \| good	43.239 \| good	0.742 \| good	3.21 \| good	0.118 \| good
2026-04-26T05:00:00.000Z	39 \| good	4.801 \| good	20.978 \| good	42.313 \| good	0.808 \| good	3.498 \| good	0.118 \| good
2026-04-26T06:00:00.000Z	44 \| good	8.076 \| good	12.998 \| good	42.37 \| good	0.89 \| good	3.844 \| good	0.119 \| good
2026-04-26T07:00:00.000Z	38 \| good	3.661 \| good	16.09 \| good	40.776 \| good	0.932 \| good	3.793 \| good	0.118 \| good
2026-04-26T08:00:00.000Z	36 \| good	3.782 \| good	16.168 \| good	38.659 \| good	0.988 \| good	3.801 \| good	0.118 \| good
2026-04-26T09:00:00.000Z	33 \| good	3.645 \| good	16.062 \| good	36.041 \| good	1.044 \| good	3.808 \| good	0.118 \| good
2026-04-26T10:00:00.000Z	31 \| good	3.665 \| good	16.062 \| good	33.248 \| good	1.109 \| good	3.753 \| good	0.116 \| good

Live air quality index in Fountain Valley, California today

Major air pollutants in Fountain Valley, California

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Air quality in nearby cities

Westminster, California

Costa Mesa, California

Huntington Beach, California

Garden Grove, California

Santa Ana, California

Stanton, California

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Frequently asked questions

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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 level in Fountain Valley, California at the moment?

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What is the sulfur dioxide (SO₂) level in Fountain Valley, California at the moment?

What is the ozone (O₃) level in Fountain Valley, California at the moment?

What is the nitrogen dioxide (NO₂) level in Fountain Valley, California at the moment?