What is the current concentration of PM10 in Simi Valley, California?

The current PM10 concentration at Simi Valley, California is 11.398 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Simi Valley, California?

The current sulfur dioxide (SO2) concentration at Simi Valley, California is 0.408 ppb.

What is the current concentration of ozone (O3) in Simi Valley, California?

The current ozone (O3) concentration at Simi Valley, California is 46.822 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Simi Valley, California?

The current nitrogen dioxide (NO2) concentration at Simi Valley, California is 5.368 ppb.

Simi Valley, California live air quality index now

Q: What is the current concentration of PM2.5 in Simi Valley, California?

The current PM2.5 concentration at Simi Valley, California is 3.343 μg/m3.

Stay updated with real-time air quality in Simi 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

Simi Valley, California

Last updated: ... (Local time)

Major air pollutants in Simi Valley, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.34 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

11.40 μg/m³

155

255

425

605+

Ozone (O₃)

46.82 ppb

201

201+

Sulfur Dioxide (SO₂)

0.41 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.37 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.21 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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Simi Valley, California

Scroll To Air Quality Map

Track live Simi Valley, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-08T03:00:00.000Z	35 \| good	2.114 \| good	8.992 \| good	38.385 \| good	0.381 \| good	5.923 \| good	0.151 \| good
2026-03-08T04:00:00.000Z	36 \| good	1.481 \| good	7.47 \| good	38.975 \| good	0.434 \| good	2.228 \| good	0.302 \| good
2026-03-08T05:00:00.000Z	37 \| good	3.349 \| good	12.22 \| good	39.93 \| good	0.546 \| good	3.223 \| good	0.445 \| good
2026-03-08T06:00:00.000Z	37 \| good	2.724 \| good	13.028 \| good	40.303 \| good	0.442 \| good	4.044 \| good	0.588 \| good
2026-03-08T07:00:00.000Z	37 \| good	2.782 \| good	10.795 \| good	40.398 \| good	0.44 \| good	2.669 \| good	0.588 \| good
2026-03-08T08:00:00.000Z	36 \| good	3.072 \| good	13.541 \| good	38.762 \| good	0.405 \| good	2.299 \| good	0.434 \| good
2026-03-08T09:00:00.000Z	37 \| good	1.744 \| good	10.643 \| good	39.868 \| good	0.399 \| good	1.428 \| good	0.387 \| good
2026-03-08T10:00:00.000Z	37 \| good	1.669 \| good	8.109 \| good	40.383 \| good	0.395 \| good	1.383 \| good	0.372 \| good
2026-03-08T11:00:00.000Z	35 \| good	1.69 \| good	7.522 \| good	38.339 \| good	0.408 \| good	1.623 \| good	0.372 \| good
2026-03-08T12:00:00.000Z	36 \| good	0.638 \| good	4.475 \| good	38.593 \| good	0.303 \| good	3.449 \| good	0.211 \| good
2026-03-08T13:00:00.000Z	36 \| good	0.564 \| good	4.805 \| good	38.593 \| good	0.525 \| good	3.459 \| good	0.199 \| good
2026-03-08T14:00:00.000Z	37 \| good	1.222 \| good	6.129 \| good	39.52 \| good	0.465 \| good	4.94 \| good	0.641 \| good
2026-03-08T15:00:00.000Z	37 \| good	1.029 \| good	5.273 \| good	39.938 \| good	0.6 \| good	9.873 \| good	0.663 \| good
2026-03-08T16:00:00.000Z	37 \| good	1.117 \| good	5.473 \| good	40.372 \| good	0.516 \| good	9.431 \| good	0.652 \| good
2026-03-08T17:00:00.000Z	38 \| good	1.909 \| good	9.222 \| good	40.585 \| good	0.502 \| good	6.804 \| good	0.463 \| good
2026-03-08T18:00:00.000Z	39 \| good	1.147 \| good	9.524 \| good	42.256 \| good	0.478 \| good	4.612 \| good	0.36 \| good
2026-03-08T19:00:00.000Z	42 \| good	2.457 \| good	9.205 \| good	44.872 \| good	0.486 \| good	3.791 \| good	0.25 \| good
2026-03-08T20:00:00.000Z	41 \| good	1.417 \| good	9.596 \| good	43.554 \| good	0.423 \| good	2.661 \| good	0.19 \| good
2026-03-08T21:00:00.000Z	40 \| good	1.302 \| good	8.683 \| good	43.1 \| good	0.457 \| good	1.387 \| good	0.141 \| good
2026-03-08T22:00:00.000Z	40 \| good	0.991 \| good	6.406 \| good	43.469 \| good	0.712 \| good	1.398 \| good	0.141 \| good
2026-03-08T23:00:00.000Z	41 \| good	1.139 \| good	7.442 \| good	43.701 \| good	0.427 \| good	1.203 \| good	0.134 \| good
2026-03-09T00:00:00.000Z	41 \| good	0.955 \| good	5.587 \| good	44.251 \| good	0.389 \| good	1.83 \| good	0.151 \| good
2026-03-09T01:00:00.000Z	39 \| good	1.032 \| good	7.411 \| good	42.288 \| good	0.51 \| good	3.671 \| good	0.134 \| good
2026-03-09T02:00:00.000Z	39 \| good	1.575 \| good	7.594 \| good	41.617 \| good	0.498 \| good	3.833 \| good	0.173 \| good
2026-03-09T03:00:00.000Z	31 \| good	2.71 \| good	10.987 \| good	33.824 \| good	0.509 \| good	12.42 \| good	0.199 \| good
2026-03-09T04:00:00.000Z	33 \| good	2.287 \| good	9.411 \| good	35.775 \| good	0.492 \| good	10.507 \| good	0.595 \| good
2026-03-09T05:00:00.000Z	31 \| good	2.861 \| good	10.098 \| good	33.202 \| good	0.606 \| good	15.384 \| good	0.484 \| good
2026-03-09T06:00:00.000Z	29 \| good	3.296 \| good	10.063 \| good	31.252 \| good	0.432 \| good	12.506 \| good	0.328 \| good
2026-03-09T07:00:00.000Z	29 \| good	3.296 \| good	10.063 \| good	31.252 \| good	0.438 \| good	14.885 \| good	0.313 \| good
2026-03-09T08:00:00.000Z	27 \| good	4.702 \| good	13.245 \| good	28.39 \| good	0.578 \| good	9.825 \| good	0.265 \| good
2026-03-09T09:00:00.000Z	28 \| good	4.19 \| good	12.11 \| good	29.502 \| good	0.536 \| good	6.839 \| good	0.19 \| good
2026-03-09T10:00:00.000Z	29 \| good	3.943 \| good	12.41 \| good	30.831 \| good	0.484 \| good	5.899 \| good	0.177 \| good
2026-03-09T11:00:00.000Z	31 \| good	3.91 \| good	11.623 \| good	32.841 \| good	0.525 \| good	5.902 \| good	0.217 \| good
2026-03-09T12:00:00.000Z	31 \| good	4.053 \| good	14.095 \| good	33.339 \| good	0.435 \| good	10.173 \| good	0.262 \| good
2026-03-09T13:00:00.000Z	31 \| good	4.053 \| good	14.095 \| good	33.339 \| good	0.436 \| good	8.654 \| good	0.262 \| good
2026-03-09T14:00:00.000Z	33 \| good	5.754 \| good	19.01 \| good	31.331 \| good	0.481 \| good	10.175 \| good	0.575 \| good
2026-03-09T15:00:00.000Z	33 \| good	6.122 \| good	20.114 \| good	29.772 \| good	0.559 \| good	14.191 \| good	0.637 \| good
2026-03-09T16:00:00.000Z	33 \| good	5.816 \| good	18.086 \| good	30.277 \| good	0.63 \| good	16.367 \| good	0.534 \| good
2026-03-09T17:00:00.000Z	33 \| good	5.638 \| good	18.228 \| good	34.075 \| good	0.703 \| good	10.975 \| good	0.31 \| good
2026-03-09T18:00:00.000Z	31 \| good	5.468 \| good	20.037 \| good	33.684 \| good	0.547 \| good	8.658 \| good	0.225 \| good
2026-03-09T19:00:00.000Z	33 \| good	5.191 \| good	19.17 \| good	35.683 \| good	0.539 \| good	9.601 \| good	0.195 \| good
2026-03-09T20:00:00.000Z	36 \| good	5.042 \| good	21.713 \| good	39.122 \| good	0.545 \| good	8.296 \| good	0.209 \| good
2026-03-09T21:00:00.000Z	42 \| good	4.572 \| good	19.544 \| good	44.611 \| good	0.587 \| good	5.761 \| good	0.226 \| good
2026-03-09T22:00:00.000Z	44 \| good	4.24 \| good	16.59 \| good	47.085 \| good	0.474 \| good	5.864 \| good	0.226 \| good
2026-03-09T23:00:00.000Z	45 \| good	4.424 \| good	16.112 \| good	48.765 \| good	0.497 \| good	5.655 \| good	0.25 \| good
2026-03-10T00:00:00.000Z	44 \| good	3.307 \| good	13.976 \| good	47.071 \| good	0.453 \| good	6.103 \| good	0.24 \| good
2026-03-10T01:00:00.000Z	44 \| good	3.343 \| good	11.398 \| good	46.822 \| good	0.408 \| good	5.368 \| good	0.21 \| good
2026-03-10T02:00:00.000Z	44 \| good	3.343 \| good	11.398 \| good	46.822 \| good	0.408 \| good	5.368 \| good	0.21 \| good
2026-03-10T03:00:00.000Z	30 \| good	4.114 \| good	18.002 \| good	32.275 \| good	0.601 \| good	6.311 \| good	0.155 \| good
2026-03-10T04:00:00.000Z	27 \| good	4.527 \| good	19.904 \| good	26.216 \| good	0.769 \| good	9.775 \| good	0.178 \| good
2026-03-10T05:00:00.000Z	27 \| good	4.576 \| good	19.914 \| good	21.991 \| good	0.937 \| good	13.239 \| good	0.2 \| good
2026-03-10T06:00:00.000Z	27 \| good	5.392 \| good	22.991 \| good	20.714 \| good	1.105 \| good	16.703 \| good	0.223 \| good
2026-03-10T07:00:00.000Z	27 \| good	4.531 \| good	19.944 \| good	20.471 \| good	1.149 \| good	16.997 \| good	0.224 \| good
2026-03-10T08:00:00.000Z	22 \| good	4.21 \| good	18.156 \| good	18.827 \| good	1.192 \| good	17.29 \| good	0.226 \| good
2026-03-10T09:00:00.000Z	22 \| good	3.833 \| good	17.06 \| good	18.86 \| good	1.235 \| good	17.584 \| good	0.228 \| good
2026-03-10T10:00:00.000Z	22 \| good	3.315 \| good	14.89 \| good	24.49 \| good	1.236 \| good	16.475 \| good	0.218 \| good
2026-03-10T11:00:00.000Z	20 \| good	2.092 \| good	8.221 \| good	22.326 \| good	1.236 \| good	15.366 \| good	0.209 \| good
2026-03-10T12:00:00.000Z	17 \| good	1.875 \| good	7.95 \| good	18.035 \| good	1.237 \| good	14.257 \| good	0.2 \| good
2026-03-10T13:00:00.000Z	18 \| good	1.372 \| good	5.172 \| good	18.521 \| good	1.249 \| good	13.764 \| good	0.209 \| good
2026-03-10T14:00:00.000Z	20 \| good	2.967 \| good	12.263 \| good	21.685 \| good	1.261 \| good	13.272 \| good	0.218 \| good
2026-03-10T15:00:00.000Z	38 \| good	6.534 \| good	29.381 \| good	26.515 \| good	1.273 \| good	12.779 \| good	0.227 \| good
2026-03-10T16:00:00.000Z	29 \| good	5.309 \| good	23.33 \| good	30.616 \| good	1.488 \| good	10.451 \| good	0.203 \| good
2026-03-10T17:00:00.000Z	33 \| good	3.369 \| good	15.108 \| good	35.667 \| good	1.703 \| good	8.123 \| good	0.178 \| good
2026-03-10T18:00:00.000Z	39 \| good	3.761 \| good	16.141 \| good	41.789 \| good	1.918 \| good	5.794 \| good	0.154 \| good
2026-03-10T19:00:00.000Z	41 \| good	4.272 \| good	18.903 \| good	43.676 \| good	1.72 \| good	4.971 \| good	0.151 \| good
2026-03-10T20:00:00.000Z	42 \| good	4.121 \| good	18.024 \| good	45.441 \| good	1.522 \| good	4.147 \| good	0.147 \| good
2026-03-10T21:00:00.000Z	43 \| good	3.475 \| good	15.02 \| good	46.001 \| good	1.324 \| good	3.323 \| good	0.144 \| good
2026-03-10T22:00:00.000Z	40 \| good	3.06 \| good	12.202 \| good	43.427 \| good	1.061 \| good	2.75 \| good	0.14 \| good
2026-03-10T23:00:00.000Z	39 \| good	2.803 \| good	11.169 \| good	41.69 \| good	0.798 \| good	2.177 \| good	0.137 \| good
2026-03-11T00:00:00.000Z	39 \| good	3.969 \| good	17.06 \| good	42.175 \| good	0.534 \| good	1.604 \| good	0.134 \| good
2026-03-11T01:00:00.000Z	37 \| good	4.426 \| good	19.08 \| good	40.372 \| good	0.559 \| good	2.856 \| good	0.141 \| good
2026-03-11T02:00:00.000Z	30 \| good	4.634 \| good	19.962 \| good	31.733 \| good	0.583 \| good	4.107 \| good	0.148 \| good
2026-03-11T03:00:00.000Z	28 \| good	5.124 \| good	21.989 \| good	29.793 \| good	0.608 \| good	5.358 \| good	0.154 \| good
2026-03-11T04:00:00.000Z	33 \| good	5.629 \| good	23.983 \| good	29.464 \| good	0.764 \| good	7.71 \| good	0.17 \| good
2026-03-11T05:00:00.000Z	33 \| good	5.519 \| good	23.797 \| good	23.94 \| good	0.919 \| good	10.062 \| good	0.185 \| good
2026-03-11T06:00:00.000Z	56 \| moderate	11.913 \| good	16.426 \| good	22.745 \| good	1.094 \| good	12.535 \| good	0.201 \| good
2026-03-11T07:00:00.000Z	27 \| good	5.281 \| good	23.035 \| good	15.674 \| good	1.247 \| good	13.835 \| good	0.208 \| good
2026-03-11T08:00:00.000Z	38 \| good	7.405 \| good	32.708 \| good	15.751 \| good	1.419 \| good	15.256 \| good	0.215 \| good
2026-03-11T09:00:00.000Z	52 \| moderate	9.535 \| good	42.524 \| good	16.378 \| good	1.591 \| good	16.677 \| good	0.222 \| good
2026-03-11T10:00:00.000Z	44 \| good	7.972 \| good	34.843 \| good	15.053 \| good	1.529 \| good	16.374 \| good	0.22 \| good
2026-03-11T11:00:00.000Z	49 \| good	8.599 \| good	37.655 \| good	14.694 \| good	1.468 \| good	16.072 \| good	0.218 \| good
2026-03-11T12:00:00.000Z	60 \| moderate	14.39 \| fine	16.959 \| good	18.138 \| good	1.4 \| good	15.783 \| good	0.217 \| good
2026-03-11T13:00:00.000Z	60 \| moderate	13.948 \| fine	16.22 \| good	18.809 \| good	1.369 \| good	14.845 \| good	0.223 \| good
2026-03-11T14:00:00.000Z	60 \| moderate	13.927 \| fine	16.021 \| good	19.48 \| good	1.337 \| good	13.907 \| good	0.229 \| good
2026-03-11T15:00:00.000Z	62 \| moderate	15.023 \| fine	17.108 \| good	20.151 \| good	1.306 \| good	12.969 \| good	0.235 \| good
2026-03-11T16:00:00.000Z	58 \| moderate	13.413 \| fine	15.472 \| good	28.075 \| good	1.434 \| good	10.586 \| good	0.217 \| good
2026-03-11T17:00:00.000Z	38 \| good	7.337 \| good	32.133 \| good	38.024 \| good	1.57 \| good	8.221 \| good	0.199 \| good
2026-03-11T18:00:00.000Z	56 \| moderate	11.503 \| good	16.46 \| good	43.922 \| good	1.691 \| good	5.82 \| good	0.181 \| good
2026-03-11T19:00:00.000Z	54 \| moderate	11.322 \| good	16.386 \| good	46.063 \| good	1.624 \| good	5.025 \| good	0.173 \| good
2026-03-11T20:00:00.000Z	54 \| moderate	11.198 \| good	16.318 \| good	48.204 \| good	1.557 \| good	4.231 \| good	0.165 \| good
2026-03-11T21:00:00.000Z	54 \| moderate	10.986 \| good	16.13 \| good	50.344 \| good	1.49 \| good	3.436 \| good	0.157 \| good
2026-03-11T22:00:00.000Z	54 \| moderate	10.61 \| good	15.647 \| good	50.645 \| good	1.394 \| good	3.177 \| good	0.153 \| good
2026-03-11T23:00:00.000Z	52 \| moderate	10.149 \| good	14.984 \| good	50.945 \| good	1.297 \| good	2.917 \| good	0.149 \| good
2026-03-12T00:00:00.000Z	52 \| moderate	9.618 \| good	14.319 \| good	51.246 \| good	1.201 \| good	2.658 \| good	0.144 \| good
2026-03-12T01:00:00.000Z	49 \| good	9.301 \| good	13.984 \| good	44.539 \| good	1.15 \| good	5.313 \| good	0.162 \| good
2026-03-12T02:00:00.000Z	52 \| moderate	9.72 \| good	13.988 \| good	37.833 \| good	1.1 \| good	7.968 \| good	0.18 \| good

Simi Valley

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Simi Valley, California air quality map: Track AQI near you

0.21ppm

How accurate is California, USA air quality data?

Air quality data and pollutant measurements for California, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

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Frequently asked questions

How often is the air quality data for Simi Valley, California updated?

The air quality for Simi Valley, California is updated every hour.

When was the worst air quality at Simi Valley, California in the last 24 hrs?

The worst air quality in Simi Valley, California in the last 24 hours was observed at 11:00:00 on 2026-03-09.

When was the best air quality at Simi Valley, California in the last 24 hrs?

In the last 24 hrs, the best air quality in Simi Valley, California was observed at 08:00:00 on 2026-03-09.

What is the current air quality in Simi Valley, California?

The current air quality in Simi Valley, California is 44, categorized as Good based on real-time data.

What pollutant is the most common in Simi Valley, California?

The most common pollutant in Simi Valley, California is O3.

What should I do if the air quality in Simi Valley, California is poor?

If the air quality in Simi Valley, California is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Simi Valley, California?

The current PM_2.5 concentration at Simi Valley, California is 3.343 μg/m³.

What is the current concentration of PM₁₀ in Simi Valley, California?

The current PM₁₀ concentration at Simi Valley, California is 11.398 μg/m³.

What is the current concentration of carbon monoxide (CO) in Simi Valley, California?

The current carbon monoxide (CO) concentration at Simi Valley, California is 0.21 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Simi Valley, California?

The current sulfur dioxide (SO₂) concentration at Simi Valley, California is 0.408 ppb.

What is the current concentration of ozone (O₃) in Simi Valley, California?

The current ozone (O₃) concentration at Simi Valley, California is 46.822 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Simi Valley, California?

The current nitrogen dioxide (NO₂) concentration at Simi Valley, California is 5.368 ppb.

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