What are the current PM10 levels at Norwalk, California?

The current PM10 levels in Norwalk, California are 23.235 μg/m3.

What are the current sulfur dioxide (SO2) levels at Norwalk, California?

The current sulfur dioxide (SO2) levels in Norwalk, California are 0.416 ppb.

What are the current ozone (O3) levels at Norwalk, California?

The current ozone (O3) levels at Norwalk, California is 38.374 ppm.

What are the current nitrogen dioxide (NO2) levels at Norwalk, California?

The current nitrogen dioxide (NO2) levels at Norwalk, California is 4.263 ppb.

Real-time air quality index in Norwalk, California today

Q: What are the current PM2.5 levels in Norwalk, California?

The measured PM2.5 levels in Norwalk, California at present are 4.88 μg/m3.

Stay updated with real-time air quality in Norwalk, 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

Norwalk, California

Last updated: ... (Local time)

Common air pollutants in Norwalk, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

4.88 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

23.23 μg/m³

155

255

425

605+

Ozone (O₃)

38.37 ppb

201

201+

Sulfur Dioxide (SO₂)

0.42 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.26 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.23 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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Norwalk, California

Scroll To Air Quality Map

Track live Norwalk, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-08T06:00:00.000Z	31 \| good	5.001 \| good	18.582 \| good	32.961 \| good	0.274 \| good	13.094 \| good	0.655 \| good
2026-03-08T07:00:00.000Z	39 \| good	3.826 \| good	10.908 \| good	42.151 \| good	0.261 \| good	14.791 \| good	0.656 \| good
2026-03-08T08:00:00.000Z	28 \| good	4.188 \| good	14.649 \| good	30.07 \| good	0.323 \| good	12.01 \| good	0.528 \| good
2026-03-08T09:00:00.000Z	27 \| good	4.572 \| good	21.444 \| good	10.511 \| good	0.227 \| good	16.973 \| good	0.486 \| good
2026-03-08T10:00:00.000Z	38 \| good	6.894 \| good	20.688 \| good	23.718 \| good	0.235 \| good	17.684 \| good	0.486 \| good
2026-03-08T11:00:00.000Z	38 \| good	6.917 \| good	27.407 \| good	24.397 \| good	0.25 \| good	24.035 \| good	0.486 \| good
2026-03-08T12:00:00.000Z	44 \| good	8.126 \| good	29.656 \| good	23.36 \| good	0.3 \| good	6.625 \| good	0.293 \| good
2026-03-08T13:00:00.000Z	38 \| good	7.021 \| good	29.428 \| good	19.58 \| good	0.503 \| good	4.679 \| good	0.293 \| good
2026-03-08T14:00:00.000Z	52 \| moderate	10.317 \| good	21.37 \| good	11.034 \| good	0.418 \| good	26.002 \| good	0.85 \| good
2026-03-08T15:00:00.000Z	54 \| moderate	11.272 \| good	48.074 \| good	12.216 \| good	0.637 \| good	24.82 \| good	0.871 \| good
2026-03-08T16:00:00.000Z	33 \| good	5.61 \| good	12.658 \| good	18.099 \| good	0.577 \| good	27.655 \| good	0.972 \| good
2026-03-08T17:00:00.000Z	33 \| good	5.631 \| good	17.948 \| good	17.412 \| good	0.505 \| good	25.311 \| good	0.679 \| good
2026-03-08T18:00:00.000Z	38 \| good	6.741 \| good	19.14 \| good	29.664 \| good	0.426 \| good	14.577 \| good	0.498 \| good
2026-03-08T19:00:00.000Z	36 \| good	5.586 \| good	24.248 \| good	38.735 \| good	0.325 \| good	10.356 \| good	0.314 \| good
2026-03-08T20:00:00.000Z	37 \| good	3.155 \| good	9.794 \| good	39.566 \| good	0.291 \| good	4.698 \| good	0.208 \| good
2026-03-08T21:00:00.000Z	40 \| good	1.819 \| good	8.07 \| good	42.698 \| good	0.354 \| good	2.624 \| good	0.152 \| good
2026-03-08T22:00:00.000Z	44 \| good	1.51 \| good	5.74 \| good	46.825 \| good	0.674 \| good	2.6 \| good	0.152 \| good
2026-03-08T23:00:00.000Z	46 \| good	1.948 \| good	11.274 \| good	50.248 \| good	0.348 \| good	1.756 \| good	0.142 \| good
2026-03-09T00:00:00.000Z	43 \| good	1.944 \| good	11.875 \| good	45.997 \| good	0.272 \| good	1.94 \| good	0.164 \| good
2026-03-09T01:00:00.000Z	43 \| good	1.742 \| good	13.696 \| good	46.036 \| good	0.318 \| good	2.49 \| good	0.143 \| good
2026-03-09T02:00:00.000Z	41 \| good	4.005 \| good	21.737 \| good	43.606 \| good	0.372 \| good	6.115 \| good	0.186 \| good
2026-03-09T03:00:00.000Z	44 \| good	8.215 \| good	36.149 \| good	35.517 \| good	2.172 \| good	40.265 \| good	0.377 \| good
2026-03-09T04:00:00.000Z	34 \| good	3.257 \| good	18.691 \| good	36.868 \| good	0.427 \| good	15.691 \| good	0.655 \| good
2026-03-09T05:00:00.000Z	35 \| good	4.388 \| good	15.143 \| good	37.985 \| good	0.526 \| good	15.926 \| good	0.439 \| good
2026-03-09T06:00:00.000Z	33 \| good	4.097 \| good	19.66 \| good	35.818 \| good	0.322 \| good	14.392 \| good	0.31 \| good
2026-03-09T07:00:00.000Z	32 \| good	5.434 \| good	20.963 \| good	34.892 \| good	0.331 \| good	15.223 \| good	0.307 \| good
2026-03-09T08:00:00.000Z	38 \| good	6.535 \| good	24.956 \| good	33.713 \| good	0.511 \| good	15.238 \| good	0.229 \| good
2026-03-09T09:00:00.000Z	33 \| good	5.818 \| good	20.991 \| good	33.226 \| good	0.457 \| good	14.477 \| good	0.158 \| good
2026-03-09T10:00:00.000Z	33 \| good	6.42 \| good	24.098 \| good	33.695 \| good	0.445 \| good	7.973 \| good	0.157 \| good
2026-03-09T11:00:00.000Z	27 \| good	5.473 \| good	28.584 \| good	27.065 \| good	0.558 \| good	5.685 \| good	0.221 \| good
2026-03-09T12:00:00.000Z	33 \| good	5.611 \| good	23.089 \| good	22.776 \| good	0.429 \| good	7.182 \| good	0.257 \| good
2026-03-09T13:00:00.000Z	27 \| good	5.467 \| good	22.48 \| good	24.89 \| good	0.429 \| good	6.247 \| good	0.257 \| good
2026-03-09T14:00:00.000Z	38 \| good	7.228 \| good	31.868 \| good	13.452 \| good	0.574 \| good	18.113 \| good	0.658 \| good
2026-03-09T15:00:00.000Z	38 \| good	7.418 \| good	31.019 \| good	21.78 \| good	0.655 \| good	18.167 \| good	0.728 \| good
2026-03-09T16:00:00.000Z	44 \| good	7.646 \| good	34.703 \| good	27.241 \| good	0.678 \| good	19.222 \| good	0.564 \| good
2026-03-09T17:00:00.000Z	44 \| good	7.517 \| good	35.771 \| good	26.462 \| good	0.682 \| good	13.329 \| good	0.306 \| good
2026-03-09T18:00:00.000Z	33 \| good	5.526 \| good	22.934 \| good	34.474 \| good	0.575 \| good	5.674 \| good	0.235 \| good
2026-03-09T19:00:00.000Z	34 \| good	6.013 \| good	28.32 \| good	36.843 \| good	0.525 \| good	4.171 \| good	0.2 \| good
2026-03-09T20:00:00.000Z	35 \| good	4.885 \| good	15.656 \| good	37.932 \| good	0.485 \| good	4.285 \| good	0.2 \| good
2026-03-09T21:00:00.000Z	42 \| good	5.999 \| good	31.626 \| good	45.194 \| good	0.501 \| good	4.188 \| good	0.221 \| good
2026-03-09T22:00:00.000Z	39 \| good	5.145 \| good	14.621 \| good	42.157 \| good	0.394 \| good	2.98 \| good	0.214 \| good
2026-03-09T23:00:00.000Z	46 \| good	6.048 \| good	20.64 \| good	49.911 \| good	0.402 \| good	3.383 \| good	0.257 \| good
2026-03-10T00:00:00.000Z	43 \| good	5.338 \| good	29.492 \| good	46.425 \| good	0.438 \| good	3.524 \| good	0.229 \| good
2026-03-10T01:00:00.000Z	39 \| good	4.798 \| good	16.887 \| good	42.387 \| good	0.363 \| good	9.043 \| good	0.207 \| good
2026-03-10T02:00:00.000Z	39 \| good	5.55 \| good	21.412 \| good	41.747 \| good	0.421 \| good	6.91 \| good	0.229 \| good
2026-03-10T03:00:00.000Z	34 \| good	1.32 \| good	5.15 \| good	37.116 \| good	3.122 \| good	15.775 \| good	0.174 \| good
2026-03-10T04:00:00.000Z	35 \| good	4.88 \| good	23.235 \| good	38.374 \| good	0.416 \| good	4.263 \| good	0.229 \| good
2026-03-10T05:00:00.000Z	35 \| good	4.88 \| good	23.235 \| good	38.374 \| good	0.416 \| good	4.263 \| good	0.229 \| good
2026-03-10T06:00:00.000Z	27 \| good	3.125 \| good	13.402 \| good	23.39 \| good	4.222 \| good	28.521 \| good	0.207 \| good
2026-03-10T07:00:00.000Z	29 \| good	4.507 \| good	19.821 \| good	17.75 \| good	4.309 \| good	30.739 \| good	0.216 \| good
2026-03-10T08:00:00.000Z	38 \| good	7.335 \| good	32.428 \| good	13.197 \| good	4.395 \| good	32.957 \| good	0.225 \| good
2026-03-10T09:00:00.000Z	44 \| good	8.082 \| good	35.407 \| good	10.82 \| good	4.482 \| good	35.176 \| good	0.234 \| good
2026-03-10T10:00:00.000Z	54 \| moderate	10.64 \| good	46.89 \| good	7.249 \| good	4.405 \| good	34.03 \| good	0.235 \| good
2026-03-10T11:00:00.000Z	49 \| good	9.289 \| good	41.294 \| good	7.818 \| good	4.329 \| good	32.885 \| good	0.236 \| good
2026-03-10T12:00:00.000Z	54 \| moderate	10.508 \| good	46.723 \| good	7.847 \| good	4.253 \| good	31.739 \| good	0.237 \| good
2026-03-10T13:00:00.000Z	58 \| moderate	12.798 \| fine	57.547 \| fine	6.655 \| good	4.205 \| good	30.482 \| good	0.27 \| good
2026-03-10T14:00:00.000Z	64 \| moderate	15.918 \| fine	70.928 \| fine	9.634 \| good	4.157 \| good	29.225 \| good	0.304 \| good
2026-03-10T15:00:00.000Z	69 \| moderate	18.888 \| fine	83.357 \| fine	11.26 \| good	4.108 \| good	27.968 \| good	0.338 \| good
2026-03-10T16:00:00.000Z	58 \| moderate	12.562 \| fine	56.466 \| fine	23.405 \| good	4.712 \| good	23.031 \| good	0.284 \| good
2026-03-10T17:00:00.000Z	49 \| good	8.684 \| good	38.724 \| good	30.526 \| good	5.315 \| good	18.093 \| good	0.23 \| good
2026-03-10T18:00:00.000Z	34 \| good	4.306 \| good	18.704 \| good	36.622 \| good	5.919 \| good	13.155 \| good	0.176 \| good
2026-03-10T19:00:00.000Z	36 \| good	3.474 \| good	15.279 \| good	38.844 \| good	5.486 \| good	11.692 \| good	0.17 \| good
2026-03-10T20:00:00.000Z	38 \| good	3.412 \| good	14.682 \| good	41.126 \| good	5.053 \| good	10.228 \| good	0.165 \| good
2026-03-10T21:00:00.000Z	42 \| good	3.533 \| good	15.418 \| good	45.27 \| good	4.62 \| good	8.765 \| good	0.159 \| good
2026-03-10T22:00:00.000Z	43 \| good	2.127 \| good	8.822 \| good	46.194 \| good	4.353 \| good	8.55 \| good	0.156 \| good
2026-03-10T23:00:00.000Z	41 \| good	1.987 \| good	8.391 \| good	44.344 \| good	4.086 \| good	8.335 \| good	0.154 \| good
2026-03-11T00:00:00.000Z	39 \| good	5.656 \| good	24.218 \| good	41.678 \| good	3.819 \| good	8.12 \| good	0.152 \| good
2026-03-11T01:00:00.000Z	34 \| good	5.619 \| good	24.735 \| good	36.96 \| good	3.772 \| good	10.978 \| good	0.161 \| good
2026-03-11T02:00:00.000Z	31 \| good	2.688 \| good	10.844 \| good	33.548 \| good	3.725 \| good	13.836 \| good	0.17 \| good
2026-03-11T03:00:00.000Z	31 \| good	3.188 \| good	13.706 \| good	33.869 \| good	3.678 \| good	16.694 \| good	0.179 \| good
2026-03-11T04:00:00.000Z	30 \| good	3.382 \| good	14.631 \| good	32.034 \| good	3.998 \| good	21.112 \| good	0.191 \| good
2026-03-11T05:00:00.000Z	25 \| good	4.128 \| good	17.979 \| good	25.412 \| good	4.318 \| good	25.53 \| good	0.203 \| good
2026-03-11T06:00:00.000Z	71 \| moderate	20.492 \| fine	25.408 \| good	14.228 \| good	4.68 \| good	30.378 \| good	0.216 \| good
2026-03-11T07:00:00.000Z	38 \| good	6.766 \| good	30.063 \| good	7.951 \| good	4.519 \| good	31.078 \| good	0.224 \| good
2026-03-11T08:00:00.000Z	54 \| moderate	11.005 \| good	48.838 \| good	12.392 \| good	4.4 \| good	32.208 \| good	0.233 \| good
2026-03-11T09:00:00.000Z	52 \| moderate	10.106 \| good	44.843 \| good	10.003 \| good	4.281 \| good	33.339 \| good	0.242 \| good
2026-03-11T10:00:00.000Z	64 \| moderate	15.532 \| fine	69.773 \| fine	3.245 \| good	3.872 \| good	32.485 \| good	0.252 \| good
2026-03-11T11:00:00.000Z	54 \| moderate	10.65 \| good	47.112 \| good	5.267 \| good	3.462 \| good	31.632 \| good	0.262 \| good
2026-03-11T12:00:00.000Z	84 \| moderate	26.715 \| fine	28.662 \| good	5.735 \| good	3.013 \| good	30.871 \| good	0.273 \| good
2026-03-11T13:00:00.000Z	84 \| moderate	26.506 \| fine	28.379 \| good	6.867 \| good	3.26 \| good	29.511 \| good	0.288 \| good
2026-03-11T14:00:00.000Z	84 \| moderate	26.917 \| fine	28.868 \| good	7.999 \| good	3.507 \| good	28.15 \| good	0.303 \| good
2026-03-11T15:00:00.000Z	88 \| moderate	29.412 \| fine	31.69 \| good	9.131 \| good	3.754 \| good	26.79 \| good	0.317 \| good
2026-03-11T16:00:00.000Z	88 \| moderate	29.052 \| fine	31.454 \| good	18.271 \| good	4.279 \| good	23.401 \| good	0.287 \| good
2026-03-11T17:00:00.000Z	64 \| moderate	15.92 \| fine	70.856 \| fine	24.226 \| good	4.835 \| good	20.075 \| good	0.257 \| good
2026-03-11T18:00:00.000Z	71 \| moderate	20.45 \| fine	25.866 \| good	36.55 \| good	5.33 \| good	16.624 \| good	0.227 \| good
2026-03-11T19:00:00.000Z	71 \| moderate	20.135 \| fine	25.498 \| good	40.481 \| good	5.48 \| good	15.742 \| good	0.219 \| good
2026-03-11T20:00:00.000Z	71 \| moderate	19.823 \| fine	25.073 \| good	44.412 \| good	5.629 \| good	14.859 \| good	0.211 \| good
2026-03-11T21:00:00.000Z	69 \| moderate	19.297 \| fine	24.403 \| good	48.343 \| good	5.779 \| good	13.977 \| good	0.202 \| good
2026-03-11T22:00:00.000Z	69 \| moderate	18.634 \| fine	23.592 \| good	48.667 \| good	5.688 \| good	13.654 \| good	0.197 \| good
2026-03-11T23:00:00.000Z	67 \| moderate	17.739 \| fine	22.454 \| good	48.991 \| good	5.598 \| good	13.332 \| good	0.193 \| good
2026-03-12T00:00:00.000Z	66 \| moderate	16.966 \| fine	21.361 \| good	49.315 \| good	5.507 \| good	13.009 \| good	0.188 \| good
2026-03-12T01:00:00.000Z	64 \| moderate	16.407 \| fine	20.386 \| good	40.281 \| good	5.273 \| good	19.076 \| good	0.209 \| good
2026-03-12T02:00:00.000Z	66 \| moderate	17.194 \| fine	20.332 \| good	31.247 \| good	5.039 \| good	25.143 \| good	0.23 \| good
2026-03-12T03:00:00.000Z	69 \| moderate	19.082 \| fine	22.175 \| good	22.213 \| good	4.805 \| good	31.21 \| good	0.251 \| good
2026-03-12T04:00:00.000Z	73 \| moderate	21.407 \| fine	24.791 \| good	17.494 \| good	4.982 \| good	34.278 \| good	0.291 \| good
2026-03-12T05:00:00.000Z	84 \| moderate	27.109 \| fine	30.429 \| good	12.776 \| good	5.159 \| good	37.347 \| good	0.332 \| good

Norwalk

Empower business decisions with accurate air quality data

Norwalk, California air quality map: Real-time AQI near you

0.24ppm

How accurate is California, USA air quality data?

Air quality measurements for California, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

Source: Ambee Data Sources

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Frequently asked questions

How frequently is the air quality data for Norwalk, California updated?

Air quality data for Norwalk, California is updated on an hourly basis.

When did Norwalk, California experience the worst air quality in the last 24 hours?

The worst air quality in Norwalk, California was recorded at 11:00:00 on 2026-03-09.

When did Norwalk, California have its best air quality in the last 24 hours?

The best air quality in Norwalk, California was recorded at 01:00:00 on 2026-03-09.

What is the real-time air quality index for Norwalk, California?

The real-time air quality index in Norwalk, California is 35, currently categorized as Good.

Which pollutant is found most often in Norwalk, California?

The most common pollutant in Norwalk, California is O3.

What can I do if the air quality in Norwalk, California is poor?

If the air quality in Norwalk, California is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Norwalk, California?

The measured PM_2.5 levels in Norwalk, California at present are 4.88 μg/m³.

What are the current PM₁₀ levels at Norwalk, California?

The current PM₁₀ levels in Norwalk, California are 23.235 μg/m³.

What are the current carbon monoxide (CO) levels at Norwalk, California?

The current carbon monoxide (CO) level in Norwalk, California is 0.229 ppm.

What are the current sulfur dioxide (SO₂) levels at Norwalk, California?

The current sulfur dioxide (SO₂) levels in Norwalk, California are 0.416 ppb.

What are the current ozone (O₃) levels at Norwalk, California?

The current ozone (O₃) levels at Norwalk, California is 38.374 ppm.

What are the current nitrogen dioxide (NO₂) levels at Norwalk, California?

The current nitrogen dioxide (NO₂) levels at Norwalk, California is 4.263 ppb.

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