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 1.013 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 49.421 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 11.824 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 12.867 μg/m3.

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

The PM10 concentration in Fountain Valley, California is 76.25 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)

Moderate

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)

12.87 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

76.25 μg/m³

155

255

425

605+

Ozone (O₃)

49.42 ppb

201

201+

Sulfur Dioxide (SO₂)

1.01 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

11.82 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.31 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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
2026-07-22T00:00:00.000Z	52 \| moderate	10.155 \| good	38.494 \| good	37.471 \| good	0.586 \| good	10.521 \| good	0.216 \| good
2026-07-22T01:00:00.000Z	44 \| good	7.697 \| good	27.999 \| good	33.743 \| good	0.562 \| good	7.61 \| good	0.269 \| good
2026-07-22T02:00:00.000Z	33 \| good	6.498 \| good	19.987 \| good	33.535 \| good	0.595 \| good	10.595 \| good	0.216 \| good
2026-07-22T03:00:00.000Z	31 \| good	5.133 \| good	32.845 \| good	30.246 \| good	0.544 \| good	8.642 \| good	0.269 \| good
2026-07-22T04:00:00.000Z	33 \| good	5.772 \| good	21.634 \| good	27.863 \| good	0.458 \| good	6.825 \| good	0.322 \| good
2026-07-22T05:00:00.000Z	27 \| good	5.194 \| good	21.518 \| good	26.706 \| good	0.67 \| good	6.392 \| good	0.343 \| good
2026-07-22T06:00:00.000Z	27 \| good	5.211 \| good	17.799 \| good	23.891 \| good	0.513 \| good	5.83 \| good	0.428 \| good
2026-07-22T07:00:00.000Z	27 \| good	5.416 \| good	27.06 \| good	23.831 \| good	0.514 \| good	5.227 \| good	0.428 \| good
2026-07-22T08:00:00.000Z	27 \| good	4.607 \| good	23.057 \| good	19.434 \| good	0.473 \| good	5.149 \| good	0.34 \| good
2026-07-22T09:00:00.000Z	26 \| good	4.326 \| good	28.332 \| good	16.232 \| good	0.496 \| good	3.39 \| good	0.234 \| good
2026-07-22T10:00:00.000Z	22 \| good	3.984 \| good	15.259 \| good	14.301 \| good	0.439 \| good	3.161 \| good	0.234 \| good
2026-07-22T11:00:00.000Z	22 \| good	3.99 \| good	20.824 \| good	13.059 \| good	0.556 \| good	3.509 \| good	0.181 \| good
2026-07-22T12:00:00.000Z	22 \| good	3.948 \| good	13.022 \| good	13.301 \| good	0.456 \| good	3.693 \| good	0.243 \| good
2026-07-22T13:00:00.000Z	27 \| good	5.309 \| good	21.351 \| good	13.749 \| good	0.456 \| good	3.368 \| good	0.243 \| good
2026-07-22T14:00:00.000Z	44 \| good	7.58 \| good	20.32 \| good	13.366 \| good	0.45 \| good	6.005 \| good	0.432 \| good
2026-07-22T15:00:00.000Z	27 \| good	4.953 \| good	22.077 \| good	12.133 \| good	0.589 \| good	10.103 \| good	0.371 \| good
2026-07-22T16:00:00.000Z	33 \| good	6.294 \| good	13.366 \| good	16.067 \| good	0.672 \| good	10.599 \| good	0.352 \| good
2026-07-22T17:00:00.000Z	52 \| moderate	9.628 \| good	37.699 \| good	18.931 \| good	0.721 \| good	9.776 \| good	0.299 \| good
2026-07-22T18:00:00.000Z	52 \| moderate	9.895 \| good	40.844 \| good	21.818 \| good	0.731 \| good	10.045 \| good	0.299 \| good
2026-07-22T19:00:00.000Z	49 \| good	8.945 \| good	43.723 \| good	23.388 \| good	0.695 \| good	9.151 \| good	0.332 \| good
2026-07-22T20:00:00.000Z	52 \| moderate	10.135 \| good	43.264 \| good	28.878 \| good	0.789 \| good	9.686 \| good	0.332 \| good
2026-07-22T21:00:00.000Z	38 \| good	7.376 \| good	19.398 \| good	31.414 \| good	0.789 \| good	9.048 \| good	0.299 \| good
2026-07-22T22:00:00.000Z	38 \| good	6.854 \| good	38.328 \| good	34.466 \| good	0.885 \| good	7.465 \| good	0.287 \| good
2026-07-22T23:00:00.000Z	30 \| good	4.435 \| good	18.653 \| good	31.777 \| good	0.662 \| good	7.352 \| good	0.341 \| good
2026-07-23T00:00:00.000Z	28 \| good	5.076 \| good	21.914 \| good	30.257 \| good	0.754 \| good	6.241 \| good	0.287 \| good
2026-07-23T01:00:00.000Z	27 \| good	4.738 \| good	23.914 \| good	27.58 \| good	0.875 \| good	9.321 \| good	0.287 \| good
2026-07-23T02:00:00.000Z	33 \| good	5.548 \| good	25.245 \| good	21.804 \| good	0.876 \| good	11.13 \| good	0.341 \| good
2026-07-23T03:00:00.000Z	49 \| good	9.287 \| good	41.017 \| good	18.196 \| good	0.544 \| good	4.364 \| good	0.097 \| good
2026-07-23T04:00:00.000Z	49 \| good	8.736 \| good	34.98 \| good	25.814 \| good	0.727 \| good	10.915 \| good	0.34 \| good
2026-07-23T05:00:00.000Z	44 \| good	7.538 \| good	28.385 \| good	23.743 \| good	0.817 \| good	14.025 \| good	0.34 \| good
2026-07-23T06:00:00.000Z	44 \| good	7.626 \| good	22.695 \| good	19.561 \| good	0.696 \| good	15.968 \| good	0.393 \| good
2026-07-23T07:00:00.000Z	44 \| good	8.085 \| good	27.741 \| good	20.06 \| good	0.676 \| good	5.611 \| good	0.393 \| good
2026-07-23T08:00:00.000Z	38 \| good	6.561 \| good	24.307 \| good	19.006 \| good	0.582 \| good	6.767 \| good	0.351 \| good
2026-07-23T09:00:00.000Z	38 \| good	6.685 \| good	29.063 \| good	21.738 \| good	0.639 \| good	6.614 \| good	0.246 \| good
2026-07-23T10:00:00.000Z	33 \| good	5.866 \| good	29.004 \| good	14.338 \| good	0.582 \| good	7.353 \| good	0.254 \| good
2026-07-23T11:00:00.000Z	27 \| good	5.315 \| good	20.59 \| good	10.419 \| good	0.716 \| good	7.189 \| good	0.245 \| good
2026-07-23T12:00:00.000Z	38 \| good	7.198 \| good	23.177 \| good	14.641 \| good	0.536 \| good	8.65 \| good	0.272 \| good
2026-07-23T13:00:00.000Z	38 \| good	7.059 \| good	21.565 \| good	20.034 \| good	0.535 \| good	8.447 \| good	0.272 \| good
2026-07-23T14:00:00.000Z	51 \| moderate	8.151 \| good	56.33 \| fine	13.151 \| good	0.637 \| good	14.031 \| good	0.476 \| good
2026-07-23T15:00:00.000Z	106 \| sensitive	14.225 \| fine	165.223 \| moderate	15.257 \| good	0.814 \| good	14.402 \| good	0.534 \| good
2026-07-23T16:00:00.000Z	73 \| moderate	17.554 \| fine	99.066 \| fine	19.525 \| good	0.884 \| good	15.594 \| good	0.464 \| good
2026-07-23T17:00:00.000Z	99 \| moderate	33.557 \| fine	150.855 \| fine	25.444 \| good	0.809 \| good	12.708 \| good	0.39 \| good
2026-07-23T18:00:00.000Z	116 \| sensitive	30.511 \| fine	184.692 \| moderate	35.348 \| good	0.842 \| good	18.698 \| good	0.357 \| good
2026-07-23T19:00:00.000Z	103 \| sensitive	11.929 \| good	159.12 \| moderate	38.246 \| good	0.777 \| good	21.126 \| good	0.362 \| good
2026-07-23T20:00:00.000Z	62 \| moderate	14.736 \| fine	63.406 \| fine	30.318 \| good	0.765 \| good	12.675 \| good	0.348 \| good
2026-07-23T21:00:00.000Z	62 \| moderate	14.56 \| fine	68.499 \| fine	50.366 \| good	0.812 \| good	10.667 \| good	0.331 \| good
2026-07-23T22:00:00.000Z	61 \| moderate	12.867 \| fine	76.25 \| fine	49.421 \| good	1.013 \| good	11.824 \| good	0.308 \| good
2026-07-23T23:00:00.000Z	61 \| moderate	12.867 \| fine	76.25 \| fine	49.421 \| good	1.013 \| good	11.824 \| good	0.308 \| good
2026-07-24T00:00:00.000Z	58 \| moderate	13.347 \| fine	60.936 \| fine	38.06 \| good	0.717 \| good	2.707 \| good	0.103 \| good
2026-07-24T01:00:00.000Z	54 \| moderate	11.262 \| good	50.113 \| good	32.35 \| good	0.681 \| good	3.238 \| good	0.104 \| good
2026-07-24T02:00:00.000Z	60 \| moderate	13.801 \| fine	61.287 \| fine	27.363 \| good	0.642 \| good	4.257 \| good	0.105 \| good
2026-07-24T03:00:00.000Z	56 \| moderate	11.688 \| good	51.326 \| good	26.988 \| good	0.602 \| good	5.377 \| good	0.104 \| good
2026-07-24T04:00:00.000Z	52 \| moderate	9.94 \| good	44.078 \| good	25.828 \| good	0.585 \| good	5.779 \| good	0.102 \| good
2026-07-24T05:00:00.000Z	52 \| moderate	9.536 \| good	42.985 \| good	25.71 \| good	0.561 \| good	5.868 \| good	0.101 \| good
2026-07-24T06:00:00.000Z	52 \| moderate	9.624 \| good	43.043 \| good	23.788 \| good	0.539 \| good	6.074 \| good	0.102 \| good
2026-07-24T07:00:00.000Z	54 \| moderate	10.595 \| good	47.115 \| good	23.173 \| good	0.513 \| good	6.417 \| good	0.103 \| good
2026-07-24T08:00:00.000Z	56 \| moderate	11.849 \| good	52.186 \| good	23.285 \| good	0.478 \| good	6.207 \| good	0.103 \| good
2026-07-24T09:00:00.000Z	52 \| moderate	10.272 \| good	45.154 \| good	24.2 \| good	0.459 \| good	6.153 \| good	0.103 \| good
2026-07-24T10:00:00.000Z	52 \| moderate	9.642 \| good	43.094 \| good	23.178 \| good	0.455 \| good	6.417 \| good	0.104 \| good
2026-07-24T11:00:00.000Z	49 \| good	9.002 \| good	39.276 \| good	22.944 \| good	0.462 \| good	6.813 \| good	0.105 \| good
2026-07-24T12:00:00.000Z	52 \| moderate	10.438 \| good	46.176 \| good	22.248 \| good	0.475 \| good	7.177 \| good	0.106 \| good
2026-07-24T13:00:00.000Z	58 \| moderate	12.696 \| fine	57.091 \| fine	18.397 \| good	0.491 \| good	7.306 \| good	0.108 \| good
2026-07-24T14:00:00.000Z	62 \| moderate	14.637 \| fine	65.347 \| fine	19.77 \| good	0.499 \| good	6.307 \| good	0.111 \| good
2026-07-24T15:00:00.000Z	62 \| moderate	15.438 \| fine	69.255 \| fine	22.586 \| good	0.529 \| good	4.724 \| good	0.105 \| good
2026-07-24T16:00:00.000Z	62 \| moderate	15.055 \| fine	67.345 \| fine	26.132 \| good	0.558 \| good	4.149 \| good	0.104 \| good
2026-07-24T17:00:00.000Z	64 \| moderate	16.186 \| fine	71.506 \| fine	32.383 \| good	0.606 \| good	3.795 \| good	0.104 \| good
2026-07-24T18:00:00.000Z	60 \| moderate	14.169 \| fine	63.364 \| fine	36.636 \| good	0.641 \| good	3.488 \| good	0.103 \| good
2026-07-24T19:00:00.000Z	60 \| moderate	13.834 \| fine	61.41 \| fine	36.78 \| good	0.666 \| good	3.088 \| good	0.102 \| good
2026-07-24T20:00:00.000Z	62 \| moderate	14.913 \| fine	67.172 \| fine	38.944 \| good	0.666 \| good	2.706 \| good	0.101 \| good
2026-07-24T21:00:00.000Z	54 \| moderate	10.633 \| good	47.179 \| good	41.091 \| good	0.668 \| good	2.402 \| good	0.1 \| good
2026-07-24T22:00:00.000Z	54 \| moderate	10.675 \| good	47.185 \| good	39.044 \| good	0.663 \| good	2.236 \| good	0.098 \| good
2026-07-24T23:00:00.000Z	49 \| good	9.032 \| good	40.929 \| good	36.75 \| good	0.655 \| good	2.238 \| good	0.097 \| good
2026-07-25T00:00:00.000Z	52 \| moderate	9.884 \| good	44.045 \| good	34.807 \| good	0.646 \| good	2.487 \| good	0.097 \| good
2026-07-25T01:00:00.000Z	49 \| good	9.423 \| good	42.096 \| good	31.694 \| good	0.624 \| good	2.89 \| good	0.097 \| good
2026-07-25T02:00:00.000Z	49 \| good	8.763 \| good	38.028 \| good	29.028 \| good	0.6 \| good	3.661 \| good	0.097 \| good
2026-07-25T03:00:00.000Z	44 \| good	8.408 \| good	36.995 \| good	29.288 \| good	0.58 \| good	4.649 \| good	0.097 \| good
2026-07-25T04:00:00.000Z	44 \| good	7.97 \| good	35.014 \| good	28.324 \| good	0.577 \| good	5.187 \| good	0.098 \| good
2026-07-25T05:00:00.000Z	44 \| good	7.855 \| good	34.096 \| good	27.041 \| good	0.569 \| good	5.511 \| good	0.098 \| good
2026-07-25T06:00:00.000Z	44 \| good	8.004 \| good	35.028 \| good	26.232 \| good	0.563 \| good	6.094 \| good	0.099 \| good
2026-07-25T07:00:00.000Z	44 \| good	8.369 \| good	37.147 \| good	24.82 \| good	0.55 \| good	6.573 \| good	0.101 \| good
2026-07-25T08:00:00.000Z	49 \| good	8.976 \| good	39.056 \| good	23.456 \| good	0.531 \| good	6.465 \| good	0.102 \| good
2026-07-25T09:00:00.000Z	44 \| good	7.73 \| good	34.197 \| good	23.183 \| good	0.538 \| good	6.745 \| good	0.103 \| good
2026-07-25T10:00:00.000Z	44 \| good	7.694 \| good	34.02 \| good	23.842 \| good	0.543 \| good	7.081 \| good	0.103 \| good
2026-07-25T11:00:00.000Z	44 \| good	7.711 \| good	34.073 \| good	23.099 \| good	0.547 \| good	7.571 \| good	0.105 \| good
2026-07-25T12:00:00.000Z	52 \| moderate	9.93 \| good	44.007 \| good	22.402 \| good	0.552 \| good	8.639 \| good	0.109 \| good
2026-07-25T13:00:00.000Z	54 \| moderate	10.758 \| good	48.087 \| good	21.319 \| good	0.565 \| good	9.196 \| good	0.114 \| good
2026-07-25T14:00:00.000Z	62 \| moderate	15.097 \| fine	67.253 \| fine	19.338 \| good	0.596 \| good	8.129 \| good	0.119 \| good
2026-07-25T15:00:00.000Z	62 \| moderate	15.247 \| fine	68.988 \| fine	21.469 \| good	0.651 \| good	6.009 \| good	0.108 \| good
2026-07-25T16:00:00.000Z	66 \| moderate	16.717 \| fine	73.301 \| fine	28.859 \| good	0.712 \| good	5.237 \| good	0.106 \| good
2026-07-25T17:00:00.000Z	73 \| moderate	20.518 \| fine	89.402 \| fine	40.2 \| good	0.77 \| good	4.777 \| good	0.106 \| good
2026-07-25T18:00:00.000Z	75 \| moderate	21.968 \| fine	95.562 \| fine	45.618 \| good	0.798 \| good	4.33 \| good	0.104 \| good
2026-07-25T19:00:00.000Z	64 \| moderate	16.493 \| fine	73.327 \| fine	45.305 \| good	0.795 \| good	3.718 \| good	0.103 \| good
2026-07-25T20:00:00.000Z	62 \| moderate	15.282 \| fine	69.135 \| fine	45.947 \| good	0.786 \| good	3.173 \| good	0.102 \| good
2026-07-25T21:00:00.000Z	58 \| moderate	12.508 \| fine	56.987 \| fine	48.07 \| good	0.779 \| good	2.784 \| good	0.101 \| good
2026-07-25T22:00:00.000Z	56 \| moderate	11.6 \| good	51.016 \| good	47.681 \| good	0.797 \| good	2.471 \| good	0.1 \| good
2026-07-25T23:00:00.000Z	52 \| moderate	9.994 \| good	44.881 \| good	45.39 \| good	0.792 \| good	2.28 \| good	0.1 \| good

Fountain Valley

Get reliable air quality data to drive your business

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

0.34ppm

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 06:00:00 on 2026-07-23.

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 11:00:00 on 2026-07-23.

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

As of now, the AQI in Fountain Valley, California is 61, indicating Moderate conditions.

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

Fountain Valley, California air has the highest levels of PM10.

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 12.867 μg/m³.

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

The PM₁₀ concentration in Fountain Valley, California is 76.25 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 0.308 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 1.013 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 49.421 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 11.824 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-07-22T00:00:00.000Z	52 \| moderate	10.155 \| good	38.494 \| good	37.471 \| good	0.586 \| good	10.521 \| good	0.216 \| good
2026-07-22T01:00:00.000Z	44 \| good	7.697 \| good	27.999 \| good	33.743 \| good	0.562 \| good	7.61 \| good	0.269 \| good
2026-07-22T02:00:00.000Z	33 \| good	6.498 \| good	19.987 \| good	33.535 \| good	0.595 \| good	10.595 \| good	0.216 \| good
2026-07-22T03:00:00.000Z	31 \| good	5.133 \| good	32.845 \| good	30.246 \| good	0.544 \| good	8.642 \| good	0.269 \| good
2026-07-22T04:00:00.000Z	33 \| good	5.772 \| good	21.634 \| good	27.863 \| good	0.458 \| good	6.825 \| good	0.322 \| good
2026-07-22T05:00:00.000Z	27 \| good	5.194 \| good	21.518 \| good	26.706 \| good	0.67 \| good	6.392 \| good	0.343 \| good
2026-07-22T06:00:00.000Z	27 \| good	5.211 \| good	17.799 \| good	23.891 \| good	0.513 \| good	5.83 \| good	0.428 \| good
2026-07-22T07:00:00.000Z	27 \| good	5.416 \| good	27.06 \| good	23.831 \| good	0.514 \| good	5.227 \| good	0.428 \| good
2026-07-22T08:00:00.000Z	27 \| good	4.607 \| good	23.057 \| good	19.434 \| good	0.473 \| good	5.149 \| good	0.34 \| good
2026-07-22T09:00:00.000Z	26 \| good	4.326 \| good	28.332 \| good	16.232 \| good	0.496 \| good	3.39 \| good	0.234 \| good
2026-07-22T10:00:00.000Z	22 \| good	3.984 \| good	15.259 \| good	14.301 \| good	0.439 \| good	3.161 \| good	0.234 \| good
2026-07-22T11:00:00.000Z	22 \| good	3.99 \| good	20.824 \| good	13.059 \| good	0.556 \| good	3.509 \| good	0.181 \| good
2026-07-22T12:00:00.000Z	22 \| good	3.948 \| good	13.022 \| good	13.301 \| good	0.456 \| good	3.693 \| good	0.243 \| good
2026-07-22T13:00:00.000Z	27 \| good	5.309 \| good	21.351 \| good	13.749 \| good	0.456 \| good	3.368 \| good	0.243 \| good
2026-07-22T14:00:00.000Z	44 \| good	7.58 \| good	20.32 \| good	13.366 \| good	0.45 \| good	6.005 \| good	0.432 \| good
2026-07-22T15:00:00.000Z	27 \| good	4.953 \| good	22.077 \| good	12.133 \| good	0.589 \| good	10.103 \| good	0.371 \| good
2026-07-22T16:00:00.000Z	33 \| good	6.294 \| good	13.366 \| good	16.067 \| good	0.672 \| good	10.599 \| good	0.352 \| good
2026-07-22T17:00:00.000Z	52 \| moderate	9.628 \| good	37.699 \| good	18.931 \| good	0.721 \| good	9.776 \| good	0.299 \| good
2026-07-22T18:00:00.000Z	52 \| moderate	9.895 \| good	40.844 \| good	21.818 \| good	0.731 \| good	10.045 \| good	0.299 \| good
2026-07-22T19:00:00.000Z	49 \| good	8.945 \| good	43.723 \| good	23.388 \| good	0.695 \| good	9.151 \| good	0.332 \| good
2026-07-22T20:00:00.000Z	52 \| moderate	10.135 \| good	43.264 \| good	28.878 \| good	0.789 \| good	9.686 \| good	0.332 \| good
2026-07-22T21:00:00.000Z	38 \| good	7.376 \| good	19.398 \| good	31.414 \| good	0.789 \| good	9.048 \| good	0.299 \| good
2026-07-22T22:00:00.000Z	38 \| good	6.854 \| good	38.328 \| good	34.466 \| good	0.885 \| good	7.465 \| good	0.287 \| good
2026-07-22T23:00:00.000Z	30 \| good	4.435 \| good	18.653 \| good	31.777 \| good	0.662 \| good	7.352 \| good	0.341 \| good
2026-07-23T00:00:00.000Z	28 \| good	5.076 \| good	21.914 \| good	30.257 \| good	0.754 \| good	6.241 \| good	0.287 \| good
2026-07-23T01:00:00.000Z	27 \| good	4.738 \| good	23.914 \| good	27.58 \| good	0.875 \| good	9.321 \| good	0.287 \| good
2026-07-23T02:00:00.000Z	33 \| good	5.548 \| good	25.245 \| good	21.804 \| good	0.876 \| good	11.13 \| good	0.341 \| good
2026-07-23T03:00:00.000Z	49 \| good	9.287 \| good	41.017 \| good	18.196 \| good	0.544 \| good	4.364 \| good	0.097 \| good
2026-07-23T04:00:00.000Z	49 \| good	8.736 \| good	34.98 \| good	25.814 \| good	0.727 \| good	10.915 \| good	0.34 \| good
2026-07-23T05:00:00.000Z	44 \| good	7.538 \| good	28.385 \| good	23.743 \| good	0.817 \| good	14.025 \| good	0.34 \| good
2026-07-23T06:00:00.000Z	44 \| good	7.626 \| good	22.695 \| good	19.561 \| good	0.696 \| good	15.968 \| good	0.393 \| good
2026-07-23T07:00:00.000Z	44 \| good	8.085 \| good	27.741 \| good	20.06 \| good	0.676 \| good	5.611 \| good	0.393 \| good
2026-07-23T08:00:00.000Z	38 \| good	6.561 \| good	24.307 \| good	19.006 \| good	0.582 \| good	6.767 \| good	0.351 \| good
2026-07-23T09:00:00.000Z	38 \| good	6.685 \| good	29.063 \| good	21.738 \| good	0.639 \| good	6.614 \| good	0.246 \| good
2026-07-23T10:00:00.000Z	33 \| good	5.866 \| good	29.004 \| good	14.338 \| good	0.582 \| good	7.353 \| good	0.254 \| good
2026-07-23T11:00:00.000Z	27 \| good	5.315 \| good	20.59 \| good	10.419 \| good	0.716 \| good	7.189 \| good	0.245 \| good
2026-07-23T12:00:00.000Z	38 \| good	7.198 \| good	23.177 \| good	14.641 \| good	0.536 \| good	8.65 \| good	0.272 \| good
2026-07-23T13:00:00.000Z	38 \| good	7.059 \| good	21.565 \| good	20.034 \| good	0.535 \| good	8.447 \| good	0.272 \| good
2026-07-23T14:00:00.000Z	51 \| moderate	8.151 \| good	56.33 \| fine	13.151 \| good	0.637 \| good	14.031 \| good	0.476 \| good
2026-07-23T15:00:00.000Z	106 \| sensitive	14.225 \| fine	165.223 \| moderate	15.257 \| good	0.814 \| good	14.402 \| good	0.534 \| good
2026-07-23T16:00:00.000Z	73 \| moderate	17.554 \| fine	99.066 \| fine	19.525 \| good	0.884 \| good	15.594 \| good	0.464 \| good
2026-07-23T17:00:00.000Z	99 \| moderate	33.557 \| fine	150.855 \| fine	25.444 \| good	0.809 \| good	12.708 \| good	0.39 \| good
2026-07-23T18:00:00.000Z	116 \| sensitive	30.511 \| fine	184.692 \| moderate	35.348 \| good	0.842 \| good	18.698 \| good	0.357 \| good
2026-07-23T19:00:00.000Z	103 \| sensitive	11.929 \| good	159.12 \| moderate	38.246 \| good	0.777 \| good	21.126 \| good	0.362 \| good
2026-07-23T20:00:00.000Z	62 \| moderate	14.736 \| fine	63.406 \| fine	30.318 \| good	0.765 \| good	12.675 \| good	0.348 \| good
2026-07-23T21:00:00.000Z	62 \| moderate	14.56 \| fine	68.499 \| fine	50.366 \| good	0.812 \| good	10.667 \| good	0.331 \| good
2026-07-23T22:00:00.000Z	61 \| moderate	12.867 \| fine	76.25 \| fine	49.421 \| good	1.013 \| good	11.824 \| good	0.308 \| good
2026-07-23T23:00:00.000Z	61 \| moderate	12.867 \| fine	76.25 \| fine	49.421 \| good	1.013 \| good	11.824 \| good	0.308 \| good
2026-07-24T00:00:00.000Z	58 \| moderate	13.347 \| fine	60.936 \| fine	38.06 \| good	0.717 \| good	2.707 \| good	0.103 \| good
2026-07-24T01:00:00.000Z	54 \| moderate	11.262 \| good	50.113 \| good	32.35 \| good	0.681 \| good	3.238 \| good	0.104 \| good
2026-07-24T02:00:00.000Z	60 \| moderate	13.801 \| fine	61.287 \| fine	27.363 \| good	0.642 \| good	4.257 \| good	0.105 \| good
2026-07-24T03:00:00.000Z	56 \| moderate	11.688 \| good	51.326 \| good	26.988 \| good	0.602 \| good	5.377 \| good	0.104 \| good
2026-07-24T04:00:00.000Z	52 \| moderate	9.94 \| good	44.078 \| good	25.828 \| good	0.585 \| good	5.779 \| good	0.102 \| good
2026-07-24T05:00:00.000Z	52 \| moderate	9.536 \| good	42.985 \| good	25.71 \| good	0.561 \| good	5.868 \| good	0.101 \| good
2026-07-24T06:00:00.000Z	52 \| moderate	9.624 \| good	43.043 \| good	23.788 \| good	0.539 \| good	6.074 \| good	0.102 \| good
2026-07-24T07:00:00.000Z	54 \| moderate	10.595 \| good	47.115 \| good	23.173 \| good	0.513 \| good	6.417 \| good	0.103 \| good
2026-07-24T08:00:00.000Z	56 \| moderate	11.849 \| good	52.186 \| good	23.285 \| good	0.478 \| good	6.207 \| good	0.103 \| good
2026-07-24T09:00:00.000Z	52 \| moderate	10.272 \| good	45.154 \| good	24.2 \| good	0.459 \| good	6.153 \| good	0.103 \| good
2026-07-24T10:00:00.000Z	52 \| moderate	9.642 \| good	43.094 \| good	23.178 \| good	0.455 \| good	6.417 \| good	0.104 \| good
2026-07-24T11:00:00.000Z	49 \| good	9.002 \| good	39.276 \| good	22.944 \| good	0.462 \| good	6.813 \| good	0.105 \| good
2026-07-24T12:00:00.000Z	52 \| moderate	10.438 \| good	46.176 \| good	22.248 \| good	0.475 \| good	7.177 \| good	0.106 \| good
2026-07-24T13:00:00.000Z	58 \| moderate	12.696 \| fine	57.091 \| fine	18.397 \| good	0.491 \| good	7.306 \| good	0.108 \| good
2026-07-24T14:00:00.000Z	62 \| moderate	14.637 \| fine	65.347 \| fine	19.77 \| good	0.499 \| good	6.307 \| good	0.111 \| good
2026-07-24T15:00:00.000Z	62 \| moderate	15.438 \| fine	69.255 \| fine	22.586 \| good	0.529 \| good	4.724 \| good	0.105 \| good
2026-07-24T16:00:00.000Z	62 \| moderate	15.055 \| fine	67.345 \| fine	26.132 \| good	0.558 \| good	4.149 \| good	0.104 \| good
2026-07-24T17:00:00.000Z	64 \| moderate	16.186 \| fine	71.506 \| fine	32.383 \| good	0.606 \| good	3.795 \| good	0.104 \| good
2026-07-24T18:00:00.000Z	60 \| moderate	14.169 \| fine	63.364 \| fine	36.636 \| good	0.641 \| good	3.488 \| good	0.103 \| good
2026-07-24T19:00:00.000Z	60 \| moderate	13.834 \| fine	61.41 \| fine	36.78 \| good	0.666 \| good	3.088 \| good	0.102 \| good
2026-07-24T20:00:00.000Z	62 \| moderate	14.913 \| fine	67.172 \| fine	38.944 \| good	0.666 \| good	2.706 \| good	0.101 \| good
2026-07-24T21:00:00.000Z	54 \| moderate	10.633 \| good	47.179 \| good	41.091 \| good	0.668 \| good	2.402 \| good	0.1 \| good
2026-07-24T22:00:00.000Z	54 \| moderate	10.675 \| good	47.185 \| good	39.044 \| good	0.663 \| good	2.236 \| good	0.098 \| good
2026-07-24T23:00:00.000Z	49 \| good	9.032 \| good	40.929 \| good	36.75 \| good	0.655 \| good	2.238 \| good	0.097 \| good
2026-07-25T00:00:00.000Z	52 \| moderate	9.884 \| good	44.045 \| good	34.807 \| good	0.646 \| good	2.487 \| good	0.097 \| good
2026-07-25T01:00:00.000Z	49 \| good	9.423 \| good	42.096 \| good	31.694 \| good	0.624 \| good	2.89 \| good	0.097 \| good
2026-07-25T02:00:00.000Z	49 \| good	8.763 \| good	38.028 \| good	29.028 \| good	0.6 \| good	3.661 \| good	0.097 \| good
2026-07-25T03:00:00.000Z	44 \| good	8.408 \| good	36.995 \| good	29.288 \| good	0.58 \| good	4.649 \| good	0.097 \| good
2026-07-25T04:00:00.000Z	44 \| good	7.97 \| good	35.014 \| good	28.324 \| good	0.577 \| good	5.187 \| good	0.098 \| good
2026-07-25T05:00:00.000Z	44 \| good	7.855 \| good	34.096 \| good	27.041 \| good	0.569 \| good	5.511 \| good	0.098 \| good
2026-07-25T06:00:00.000Z	44 \| good	8.004 \| good	35.028 \| good	26.232 \| good	0.563 \| good	6.094 \| good	0.099 \| good
2026-07-25T07:00:00.000Z	44 \| good	8.369 \| good	37.147 \| good	24.82 \| good	0.55 \| good	6.573 \| good	0.101 \| good
2026-07-25T08:00:00.000Z	49 \| good	8.976 \| good	39.056 \| good	23.456 \| good	0.531 \| good	6.465 \| good	0.102 \| good
2026-07-25T09:00:00.000Z	44 \| good	7.73 \| good	34.197 \| good	23.183 \| good	0.538 \| good	6.745 \| good	0.103 \| good
2026-07-25T10:00:00.000Z	44 \| good	7.694 \| good	34.02 \| good	23.842 \| good	0.543 \| good	7.081 \| good	0.103 \| good
2026-07-25T11:00:00.000Z	44 \| good	7.711 \| good	34.073 \| good	23.099 \| good	0.547 \| good	7.571 \| good	0.105 \| good
2026-07-25T12:00:00.000Z	52 \| moderate	9.93 \| good	44.007 \| good	22.402 \| good	0.552 \| good	8.639 \| good	0.109 \| good
2026-07-25T13:00:00.000Z	54 \| moderate	10.758 \| good	48.087 \| good	21.319 \| good	0.565 \| good	9.196 \| good	0.114 \| good
2026-07-25T14:00:00.000Z	62 \| moderate	15.097 \| fine	67.253 \| fine	19.338 \| good	0.596 \| good	8.129 \| good	0.119 \| good
2026-07-25T15:00:00.000Z	62 \| moderate	15.247 \| fine	68.988 \| fine	21.469 \| good	0.651 \| good	6.009 \| good	0.108 \| good
2026-07-25T16:00:00.000Z	66 \| moderate	16.717 \| fine	73.301 \| fine	28.859 \| good	0.712 \| good	5.237 \| good	0.106 \| good
2026-07-25T17:00:00.000Z	73 \| moderate	20.518 \| fine	89.402 \| fine	40.2 \| good	0.77 \| good	4.777 \| good	0.106 \| good
2026-07-25T18:00:00.000Z	75 \| moderate	21.968 \| fine	95.562 \| fine	45.618 \| good	0.798 \| good	4.33 \| good	0.104 \| good
2026-07-25T19:00:00.000Z	64 \| moderate	16.493 \| fine	73.327 \| fine	45.305 \| good	0.795 \| good	3.718 \| good	0.103 \| good
2026-07-25T20:00:00.000Z	62 \| moderate	15.282 \| fine	69.135 \| fine	45.947 \| good	0.786 \| good	3.173 \| good	0.102 \| good
2026-07-25T21:00:00.000Z	58 \| moderate	12.508 \| fine	56.987 \| fine	48.07 \| good	0.779 \| good	2.784 \| good	0.101 \| good
2026-07-25T22:00:00.000Z	56 \| moderate	11.6 \| good	51.016 \| good	47.681 \| good	0.797 \| good	2.471 \| good	0.1 \| good
2026-07-25T23:00:00.000Z	52 \| moderate	9.994 \| good	44.881 \| good	45.39 \| good	0.792 \| good	2.28 \| good	0.1 \| 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?