What is the current concentration of PM10 in Hayward, California?

The current PM10 concentration at Hayward, California is 29.538 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Hayward, California is 0.39 ppb.

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

The current ozone (O3) concentration at Hayward, California is 6.695 ppm.

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

The current nitrogen dioxide (NO2) concentration at Hayward, California is 6.497 ppb.

Hayward, California live air quality index now

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

The current PM2.5 concentration at Hayward, California is 7.899 μg/m3.

Stay updated with real-time air quality in Hayward, 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

Hayward, California

Last updated: ... (Local time)

Major air pollutants in Hayward, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

7.90 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

29.54 μg/m³

155

255

425

605+

Ozone (O₃)

6.70 ppb

201

201+

Sulfur Dioxide (SO₂)

0.39 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.50 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.31 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Hayward, California

Get Live Pollen Counts

Hayward, California

Scroll To Air Quality Map

Track live Hayward, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T15:00:00.000Z	66 \| moderate	16.663 \| fine	53.566 \| good	19.2 \| good	0.479 \| good	14.213 \| good	0.431 \| good
2025-12-05T16:00:00.000Z	67 \| moderate	16.589 \| fine	86.532 \| fine	18.924 \| good	0.442 \| good	13.767 \| good	0.537 \| good
2025-12-05T17:00:00.000Z	58 \| moderate	12.746 \| fine	50.703 \| good	18.673 \| good	0.439 \| good	13.728 \| good	0.716 \| good
2025-12-05T18:00:00.000Z	56 \| moderate	11.62 \| good	47.413 \| good	17.896 \| good	0.468 \| good	12.543 \| good	0.416 \| good
2025-12-05T19:00:00.000Z	58 \| moderate	13.366 \| fine	42.503 \| good	17.383 \| good	0.481 \| good	11.862 \| good	0.409 \| good
2025-12-05T20:00:00.000Z	58 \| moderate	13.051 \| fine	50.862 \| good	15.924 \| good	0.434 \| good	11.03 \| good	0.347 \| good
2025-12-05T21:00:00.000Z	56 \| moderate	12.491 \| fine	54.334 \| good	16.083 \| good	0.412 \| good	10.349 \| good	0.337 \| good
2025-12-05T22:00:00.000Z	60 \| moderate	13.996 \| fine	62.435 \| fine	15.783 \| good	0.528 \| good	10.936 \| good	0.295 \| good
2025-12-05T23:00:00.000Z	62 \| moderate	14.822 \| fine	59.222 \| fine	13.837 \| good	0.481 \| good	11.934 \| good	0.295 \| good
2025-12-06T00:00:00.000Z	64 \| moderate	16.428 \| fine	71.196 \| fine	13.832 \| good	0.505 \| good	11.611 \| good	0.281 \| good
2025-12-06T01:00:00.000Z	62 \| moderate	15.288 \| fine	66.075 \| fine	12.511 \| good	0.448 \| good	13.708 \| good	0.309 \| good
2025-12-06T02:00:00.000Z	64 \| moderate	15.819 \| fine	51.586 \| good	11.261 \| good	0.432 \| good	15.898 \| good	0.341 \| good
2025-12-06T03:00:00.000Z	73 \| moderate	21.187 \| fine	79.238 \| fine	8.926 \| good	0.387 \| good	21.081 \| good	0.439 \| good
2025-12-06T04:00:00.000Z	75 \| moderate	21.95 \| fine	85.486 \| fine	11.139 \| good	0.439 \| good	18.529 \| good	0.493 \| good
2025-12-06T05:00:00.000Z	71 \| moderate	20.234 \| fine	91.654 \| fine	10.343 \| good	0.449 \| good	16.595 \| good	0.535 \| good
2025-12-06T06:00:00.000Z	75 \| moderate	22.207 \| fine	94.326 \| fine	11.005 \| good	0.471 \| good	16.318 \| good	0.573 \| good
2025-12-06T07:00:00.000Z	76 \| moderate	22.495 \| fine	104.768 \| fine	9.203 \| good	0.516 \| good	15.379 \| good	0.494 \| good
2025-12-06T08:00:00.000Z	77 \| moderate	22.633 \| fine	87.609 \| fine	10.092 \| good	0.431 \| good	14.735 \| good	0.39 \| good
2025-12-06T09:00:00.000Z	75 \| moderate	22.182 \| fine	83.394 \| fine	10.149 \| good	0.437 \| good	14.937 \| good	0.39 \| good
2025-12-06T10:00:00.000Z	71 \| moderate	20.246 \| fine	83.457 \| fine	10.261 \| good	0.917 \| good	16.035 \| good	0.42 \| good
2025-12-06T11:00:00.000Z	58 \| moderate	12.59 \| fine	49.316 \| good	10.547 \| good	0.859 \| good	15.128 \| good	0.375 \| good
2025-12-06T12:00:00.000Z	64 \| moderate	15.599 \| fine	65.607 \| fine	14.697 \| good	0.344 \| good	8.216 \| good	0.325 \| good
2025-12-06T13:00:00.000Z	54 \| moderate	10.659 \| good	41.116 \| good	7.512 \| good	0.379 \| good	7.311 \| good	0.252 \| good
2025-12-06T14:00:00.000Z	60 \| moderate	13.601 \| fine	39.437 \| good	9.565 \| good	0.495 \| good	6.775 \| good	0.183 \| good
2025-12-06T15:00:00.000Z	60 \| moderate	14.015 \| fine	44.142 \| good	8.301 \| good	0.4 \| good	9.188 \| good	0.22 \| good
2025-12-06T16:00:00.000Z	58 \| moderate	13.154 \| fine	59.287 \| fine	8.65 \| good	0.379 \| good	7.111 \| good	0.234 \| good
2025-12-06T17:00:00.000Z	60 \| moderate	13.695 \| fine	53.576 \| good	9.415 \| good	0.433 \| good	7.489 \| good	0.268 \| good
2025-12-06T18:00:00.000Z	62 \| moderate	15.396 \| fine	58.799 \| fine	8.59 \| good	0.492 \| good	7.214 \| good	0.323 \| good
2025-12-06T19:00:00.000Z	56 \| moderate	12.412 \| fine	56.559 \| fine	10.146 \| good	0.491 \| good	6.715 \| good	0.318 \| good
2025-12-06T20:00:00.000Z	58 \| moderate	12.554 \| fine	48.785 \| good	10.496 \| good	0.496 \| good	6.072 \| good	0.295 \| good
2025-12-06T21:00:00.000Z	56 \| moderate	11.864 \| good	42.962 \| good	11.167 \| good	0.572 \| good	6.448 \| good	0.336 \| good
2025-12-06T22:00:00.000Z	64 \| moderate	16.278 \| fine	71.906 \| fine	11.191 \| good	0.59 \| good	7.317 \| good	0.323 \| good
2025-12-06T23:00:00.000Z	66 \| moderate	17.119 \| fine	70.256 \| fine	12.59 \| good	0.526 \| good	7.854 \| good	0.304 \| good
2025-12-07T00:00:00.000Z	69 \| moderate	19.088 \| fine	50.181 \| good	12.834 \| good	0.486 \| good	8.731 \| good	0.304 \| good
2025-12-07T01:00:00.000Z	69 \| moderate	19.118 \| fine	67.564 \| fine	13.393 \| good	0.446 \| good	6.948 \| good	0.267 \| good
2025-12-07T02:00:00.000Z	71 \| moderate	20.226 \| fine	69.222 \| fine	11.965 \| good	0.401 \| good	8.022 \| good	0.291 \| good
2025-12-07T03:00:00.000Z	79 \| moderate	24.034 \| fine	80.694 \| fine	10.059 \| good	0.423 \| good	10.052 \| good	0.293 \| good
2025-12-07T04:00:00.000Z	73 \| moderate	20.882 \| fine	59.362 \| fine	9.392 \| good	0.393 \| good	12.516 \| good	0.383 \| good
2025-12-07T05:00:00.000Z	75 \| moderate	22.156 \| fine	78.353 \| fine	9.291 \| good	0.417 \| good	12.368 \| good	0.397 \| good
2025-12-07T06:00:00.000Z	73 \| moderate	20.777 \| fine	61.276 \| fine	7.761 \| good	0.421 \| good	10.933 \| good	0.43 \| good
2025-12-07T07:00:00.000Z	66 \| moderate	17.224 \| fine	72.156 \| fine	7.436 \| good	0.415 \| good	9.876 \| good	0.396 \| good
2025-12-07T08:00:00.000Z	67 \| moderate	17.722 \| fine	71.381 \| fine	8.105 \| good	0.388 \| good	9.255 \| good	0.386 \| good
2025-12-07T09:00:00.000Z	67 \| moderate	17.734 \| fine	73.88 \| fine	7.917 \| good	0.383 \| good	9.366 \| good	0.386 \| good
2025-12-07T10:00:00.000Z	66 \| moderate	17.45 \| fine	83.507 \| fine	7.949 \| good	0.49 \| good	5.411 \| good	0.261 \| good
2025-12-07T11:00:00.000Z	56 \| moderate	12.336 \| fine	47.188 \| good	7.61 \| good	0.514 \| good	3.353 \| good	0.253 \| good
2025-12-07T12:00:00.000Z	56 \| moderate	11.507 \| good	49.303 \| good	9.071 \| good	0.353 \| good	7.252 \| good	0.248 \| good
2025-12-07T13:00:00.000Z	44 \| good	8.313 \| good	31.88 \| good	6.888 \| good	0.392 \| good	6.63 \| good	0.306 \| good
2025-12-07T14:00:00.000Z	38 \| good	6.507 \| good	29.329 \| good	6.009 \| good	0.44 \| good	5.519 \| good	0.264 \| good
2025-12-07T14:00:00.000Z	44 \| good	7.899 \| good	29.538 \| good	6.695 \| good	0.39 \| good	6.497 \| good	0.311 \| good
2025-12-07T15:00:00.000Z	27 \| good	5.335 \| good	23.551 \| good	10.102 \| good	1.661 \| good	20.492 \| good	0.351 \| good
2025-12-07T16:00:00.000Z	33 \| good	5.89 \| good	25.799 \| good	9.609 \| good	1.839 \| good	19.755 \| good	0.361 \| good
2025-12-07T17:00:00.000Z	27 \| good	4.554 \| good	20.229 \| good	9.594 \| good	2.017 \| good	19.018 \| good	0.371 \| good
2025-12-07T18:00:00.000Z	27 \| good	4.924 \| good	21.431 \| good	11.37 \| good	2.195 \| good	18.281 \| good	0.381 \| good
2025-12-07T19:00:00.000Z	38 \| good	6.646 \| good	29.132 \| good	14.157 \| good	2.612 \| good	17.111 \| good	0.334 \| good
2025-12-07T20:00:00.000Z	52 \| moderate	9.801 \| good	43.249 \| good	16.417 \| good	3.029 \| good	15.94 \| good	0.287 \| good
2025-12-07T21:00:00.000Z	58 \| moderate	12.522 \| fine	55.425 \| fine	15.445 \| good	3.446 \| good	14.77 \| good	0.241 \| good
2025-12-07T22:00:00.000Z	60 \| moderate	13.591 \| fine	61.029 \| fine	12.965 \| good	3.485 \| good	16.635 \| good	0.239 \| good
2025-12-07T23:00:00.000Z	64 \| moderate	16.22 \| fine	72.078 \| fine	10.95 \| good	3.524 \| good	18.5 \| good	0.237 \| good
2025-12-08T00:00:00.000Z	64 \| moderate	16.211 \| fine	72.587 \| fine	7.823 \| good	3.562 \| good	20.365 \| good	0.236 \| good
2025-12-08T01:00:00.000Z	67 \| moderate	18.291 \| fine	80.897 \| fine	4.194 \| good	3.601 \| good	23.149 \| good	0.301 \| good
2025-12-08T02:00:00.000Z	67 \| moderate	18.281 \| fine	81.383 \| fine	6.229 \| good	3.64 \| good	25.934 \| good	0.367 \| good
2025-12-08T03:00:00.000Z	75 \| moderate	22.036 \| fine	96.592 \| fine	6.053 \| good	3.679 \| good	28.718 \| good	0.433 \| good
2025-12-08T04:00:00.000Z	75 \| moderate	22.251 \| fine	98.181 \| fine	5.779 \| good	3.973 \| good	28.61 \| good	0.452 \| good
2025-12-08T05:00:00.000Z	77 \| moderate	23.012 \| fine	100.939 \| fine	6.227 \| good	4.267 \| good	28.502 \| good	0.472 \| good
2025-12-08T06:00:00.000Z	75 \| moderate	22.147 \| fine	97.3 \| fine	7.503 \| good	4.561 \| good	28.394 \| good	0.492 \| good
2025-12-08T07:00:00.000Z	73 \| moderate	21.026 \| fine	92.404 \| fine	6.961 \| good	4.374 \| good	27.55 \| good	0.476 \| good
2025-12-08T08:00:00.000Z	69 \| moderate	18.992 \| fine	83.911 \| fine	7.117 \| good	4.187 \| good	26.706 \| good	0.46 \| good
2025-12-08T09:00:00.000Z	67 \| moderate	18.401 \| fine	80.919 \| fine	9.141 \| good	4 \| good	25.862 \| good	0.444 \| good
2025-12-08T10:00:00.000Z	64 \| moderate	15.969 \| fine	71.098 \| fine	10.827 \| good	3.578 \| good	24.434 \| good	0.429 \| good
2025-12-08T11:00:00.000Z	60 \| moderate	14.184 \| fine	63.341 \| fine	11.959 \| good	3.157 \| good	23.006 \| good	0.413 \| good
2025-12-08T12:00:00.000Z	58 \| moderate	13.455 \| fine	60.092 \| fine	12.703 \| good	2.735 \| good	21.577 \| good	0.398 \| good
2025-12-08T13:00:00.000Z	56 \| moderate	12.086 \| good	53.813 \| good	10.805 \| good	2.641 \| good	21.23 \| good	0.409 \| good
2025-12-08T14:00:00.000Z	54 \| moderate	11.396 \| good	50.74 \| good	9.602 \| good	2.547 \| good	20.882 \| good	0.42 \| good
2025-12-08T15:00:00.000Z	49 \| good	9.262 \| good	40.574 \| good	8.273 \| good	2.452 \| good	20.534 \| good	0.431 \| good
2025-12-08T16:00:00.000Z	52 \| moderate	10.105 \| good	44.807 \| good	8.666 \| good	2.887 \| good	19.846 \| good	0.403 \| good
2025-12-08T17:00:00.000Z	49 \| good	8.611 \| good	38.076 \| good	10.248 \| good	3.321 \| good	19.158 \| good	0.375 \| good
2025-12-08T18:00:00.000Z	49 \| good	8.759 \| good	38.995 \| good	11.523 \| good	3.756 \| good	18.471 \| good	0.348 \| good
2025-12-08T19:00:00.000Z	49 \| good	8.777 \| good	38.721 \| good	14.52 \| good	3.611 \| good	16.366 \| good	0.301 \| good
2025-12-08T20:00:00.000Z	52 \| moderate	9.785 \| good	43.35 \| good	15.785 \| good	3.466 \| good	14.261 \| good	0.254 \| good
2025-12-08T21:00:00.000Z	52 \| moderate	10.324 \| good	45.895 \| good	15.772 \| good	3.321 \| good	12.156 \| good	0.208 \| good
2025-12-08T22:00:00.000Z	56 \| moderate	11.796 \| good	52.5 \| good	15.146 \| good	3.313 \| good	13.696 \| good	0.211 \| good
2025-12-08T23:00:00.000Z	62 \| moderate	15 \| fine	66.855 \| fine	10.259 \| good	3.305 \| good	15.236 \| good	0.214 \| good
2025-12-09T00:00:00.000Z	64 \| moderate	15.949 \| fine	71.203 \| fine	5.807 \| good	3.298 \| good	16.776 \| good	0.217 \| good
2025-12-09T01:00:00.000Z	67 \| moderate	17.689 \| fine	78.12 \| fine	2.809 \| good	3.26 \| good	20.477 \| good	0.28 \| good
2025-12-09T02:00:00.000Z	66 \| moderate	16.826 \| fine	74.405 \| fine	4.16 \| good	3.222 \| good	24.177 \| good	0.344 \| good
2025-12-09T03:00:00.000Z	69 \| moderate	18.91 \| fine	83.444 \| fine	5.471 \| good	3.184 \| good	27.878 \| good	0.407 \| good
2025-12-09T04:00:00.000Z	67 \| moderate	18.075 \| fine	79.833 \| fine	5.972 \| good	3.442 \| good	27.637 \| good	0.427 \| good
2025-12-09T05:00:00.000Z	67 \| moderate	18.429 \| fine	81.427 \| fine	6.801 \| good	3.701 \| good	27.395 \| good	0.447 \| good
2025-12-09T06:00:00.000Z	66 \| moderate	17.397 \| fine	77.507 \| fine	6.423 \| good	3.959 \| good	27.154 \| good	0.466 \| good
2025-12-09T07:00:00.000Z	64 \| moderate	16.167 \| fine	71.974 \| fine	6.038 \| good	3.753 \| good	26.105 \| good	0.461 \| good
2025-12-09T08:00:00.000Z	60 \| moderate	13.805 \| fine	62.172 \| fine	6.933 \| good	3.546 \| good	25.057 \| good	0.456 \| good
2025-12-09T09:00:00.000Z	58 \| moderate	12.639 \| fine	56.523 \| fine	7.69 \| good	3.34 \| good	24.009 \| good	0.451 \| good
2025-12-09T10:00:00.000Z	52 \| moderate	9.625 \| good	42.707 \| good	9.241 \| good	3.089 \| good	22.993 \| good	0.428 \| good
2025-12-09T11:00:00.000Z	44 \| good	8.212 \| good	36.537 \| good	9.009 \| good	2.838 \| good	21.978 \| good	0.404 \| good
2025-12-09T12:00:00.000Z	49 \| good	8.529 \| good	37.392 \| good	8.66 \| good	2.586 \| good	20.962 \| good	0.381 \| good
2025-12-09T13:00:00.000Z	38 \| good	7.242 \| good	32.423 \| good	7.664 \| good	2.716 \| good	21.399 \| good	0.379 \| good
2025-12-09T14:00:00.000Z	44 \| good	7.579 \| good	33.451 \| good	8.357 \| good	2.845 \| good	21.836 \| good	0.377 \| good

Hayward

Get reliable air quality data to drive your business

Hayward, California air quality map: Track AQI near you

0.32ppm

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 Hayward, California updated?

The air quality for Hayward, California is updated every hour.

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

The worst air quality in Hayward, California in the last 24 hours was observed at 03:00:00 on 2025-12-07.

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

In the last 24 hrs, the best air quality in Hayward, California was observed at 01:00:00 on 2025-12-07.

What is the current air quality in Hayward, California?

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

What pollutant is the most common in Hayward, California?

The most common pollutant in Hayward, California is PM2.5.

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

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

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

The current PM_2.5 concentration at Hayward, California is 7.899 μg/m³.

What is the current concentration of PM₁₀ in Hayward, California?

The current PM₁₀ concentration at Hayward, California is 29.538 μg/m³.

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

The current carbon monoxide (CO) concentration at Hayward, California is 0.311 ppm.

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

The current sulfur dioxide (SO₂) concentration at Hayward, California is 0.39 ppb.

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

The current ozone (O₃) concentration at Hayward, California is 6.695 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Hayward, California is 6.497 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-05T15:00:00.000Z	66 \| moderate	16.663 \| fine	53.566 \| good	19.2 \| good	0.479 \| good	14.213 \| good	0.431 \| good
2025-12-05T16:00:00.000Z	67 \| moderate	16.589 \| fine	86.532 \| fine	18.924 \| good	0.442 \| good	13.767 \| good	0.537 \| good
2025-12-05T17:00:00.000Z	58 \| moderate	12.746 \| fine	50.703 \| good	18.673 \| good	0.439 \| good	13.728 \| good	0.716 \| good
2025-12-05T18:00:00.000Z	56 \| moderate	11.62 \| good	47.413 \| good	17.896 \| good	0.468 \| good	12.543 \| good	0.416 \| good
2025-12-05T19:00:00.000Z	58 \| moderate	13.366 \| fine	42.503 \| good	17.383 \| good	0.481 \| good	11.862 \| good	0.409 \| good
2025-12-05T20:00:00.000Z	58 \| moderate	13.051 \| fine	50.862 \| good	15.924 \| good	0.434 \| good	11.03 \| good	0.347 \| good
2025-12-05T21:00:00.000Z	56 \| moderate	12.491 \| fine	54.334 \| good	16.083 \| good	0.412 \| good	10.349 \| good	0.337 \| good
2025-12-05T22:00:00.000Z	60 \| moderate	13.996 \| fine	62.435 \| fine	15.783 \| good	0.528 \| good	10.936 \| good	0.295 \| good
2025-12-05T23:00:00.000Z	62 \| moderate	14.822 \| fine	59.222 \| fine	13.837 \| good	0.481 \| good	11.934 \| good	0.295 \| good
2025-12-06T00:00:00.000Z	64 \| moderate	16.428 \| fine	71.196 \| fine	13.832 \| good	0.505 \| good	11.611 \| good	0.281 \| good
2025-12-06T01:00:00.000Z	62 \| moderate	15.288 \| fine	66.075 \| fine	12.511 \| good	0.448 \| good	13.708 \| good	0.309 \| good
2025-12-06T02:00:00.000Z	64 \| moderate	15.819 \| fine	51.586 \| good	11.261 \| good	0.432 \| good	15.898 \| good	0.341 \| good
2025-12-06T03:00:00.000Z	73 \| moderate	21.187 \| fine	79.238 \| fine	8.926 \| good	0.387 \| good	21.081 \| good	0.439 \| good
2025-12-06T04:00:00.000Z	75 \| moderate	21.95 \| fine	85.486 \| fine	11.139 \| good	0.439 \| good	18.529 \| good	0.493 \| good
2025-12-06T05:00:00.000Z	71 \| moderate	20.234 \| fine	91.654 \| fine	10.343 \| good	0.449 \| good	16.595 \| good	0.535 \| good
2025-12-06T06:00:00.000Z	75 \| moderate	22.207 \| fine	94.326 \| fine	11.005 \| good	0.471 \| good	16.318 \| good	0.573 \| good
2025-12-06T07:00:00.000Z	76 \| moderate	22.495 \| fine	104.768 \| fine	9.203 \| good	0.516 \| good	15.379 \| good	0.494 \| good
2025-12-06T08:00:00.000Z	77 \| moderate	22.633 \| fine	87.609 \| fine	10.092 \| good	0.431 \| good	14.735 \| good	0.39 \| good
2025-12-06T09:00:00.000Z	75 \| moderate	22.182 \| fine	83.394 \| fine	10.149 \| good	0.437 \| good	14.937 \| good	0.39 \| good
2025-12-06T10:00:00.000Z	71 \| moderate	20.246 \| fine	83.457 \| fine	10.261 \| good	0.917 \| good	16.035 \| good	0.42 \| good
2025-12-06T11:00:00.000Z	58 \| moderate	12.59 \| fine	49.316 \| good	10.547 \| good	0.859 \| good	15.128 \| good	0.375 \| good
2025-12-06T12:00:00.000Z	64 \| moderate	15.599 \| fine	65.607 \| fine	14.697 \| good	0.344 \| good	8.216 \| good	0.325 \| good
2025-12-06T13:00:00.000Z	54 \| moderate	10.659 \| good	41.116 \| good	7.512 \| good	0.379 \| good	7.311 \| good	0.252 \| good
2025-12-06T14:00:00.000Z	60 \| moderate	13.601 \| fine	39.437 \| good	9.565 \| good	0.495 \| good	6.775 \| good	0.183 \| good
2025-12-06T15:00:00.000Z	60 \| moderate	14.015 \| fine	44.142 \| good	8.301 \| good	0.4 \| good	9.188 \| good	0.22 \| good
2025-12-06T16:00:00.000Z	58 \| moderate	13.154 \| fine	59.287 \| fine	8.65 \| good	0.379 \| good	7.111 \| good	0.234 \| good
2025-12-06T17:00:00.000Z	60 \| moderate	13.695 \| fine	53.576 \| good	9.415 \| good	0.433 \| good	7.489 \| good	0.268 \| good
2025-12-06T18:00:00.000Z	62 \| moderate	15.396 \| fine	58.799 \| fine	8.59 \| good	0.492 \| good	7.214 \| good	0.323 \| good
2025-12-06T19:00:00.000Z	56 \| moderate	12.412 \| fine	56.559 \| fine	10.146 \| good	0.491 \| good	6.715 \| good	0.318 \| good
2025-12-06T20:00:00.000Z	58 \| moderate	12.554 \| fine	48.785 \| good	10.496 \| good	0.496 \| good	6.072 \| good	0.295 \| good
2025-12-06T21:00:00.000Z	56 \| moderate	11.864 \| good	42.962 \| good	11.167 \| good	0.572 \| good	6.448 \| good	0.336 \| good
2025-12-06T22:00:00.000Z	64 \| moderate	16.278 \| fine	71.906 \| fine	11.191 \| good	0.59 \| good	7.317 \| good	0.323 \| good
2025-12-06T23:00:00.000Z	66 \| moderate	17.119 \| fine	70.256 \| fine	12.59 \| good	0.526 \| good	7.854 \| good	0.304 \| good
2025-12-07T00:00:00.000Z	69 \| moderate	19.088 \| fine	50.181 \| good	12.834 \| good	0.486 \| good	8.731 \| good	0.304 \| good
2025-12-07T01:00:00.000Z	69 \| moderate	19.118 \| fine	67.564 \| fine	13.393 \| good	0.446 \| good	6.948 \| good	0.267 \| good
2025-12-07T02:00:00.000Z	71 \| moderate	20.226 \| fine	69.222 \| fine	11.965 \| good	0.401 \| good	8.022 \| good	0.291 \| good
2025-12-07T03:00:00.000Z	79 \| moderate	24.034 \| fine	80.694 \| fine	10.059 \| good	0.423 \| good	10.052 \| good	0.293 \| good
2025-12-07T04:00:00.000Z	73 \| moderate	20.882 \| fine	59.362 \| fine	9.392 \| good	0.393 \| good	12.516 \| good	0.383 \| good
2025-12-07T05:00:00.000Z	75 \| moderate	22.156 \| fine	78.353 \| fine	9.291 \| good	0.417 \| good	12.368 \| good	0.397 \| good
2025-12-07T06:00:00.000Z	73 \| moderate	20.777 \| fine	61.276 \| fine	7.761 \| good	0.421 \| good	10.933 \| good	0.43 \| good
2025-12-07T07:00:00.000Z	66 \| moderate	17.224 \| fine	72.156 \| fine	7.436 \| good	0.415 \| good	9.876 \| good	0.396 \| good
2025-12-07T08:00:00.000Z	67 \| moderate	17.722 \| fine	71.381 \| fine	8.105 \| good	0.388 \| good	9.255 \| good	0.386 \| good
2025-12-07T09:00:00.000Z	67 \| moderate	17.734 \| fine	73.88 \| fine	7.917 \| good	0.383 \| good	9.366 \| good	0.386 \| good
2025-12-07T10:00:00.000Z	66 \| moderate	17.45 \| fine	83.507 \| fine	7.949 \| good	0.49 \| good	5.411 \| good	0.261 \| good
2025-12-07T11:00:00.000Z	56 \| moderate	12.336 \| fine	47.188 \| good	7.61 \| good	0.514 \| good	3.353 \| good	0.253 \| good
2025-12-07T12:00:00.000Z	56 \| moderate	11.507 \| good	49.303 \| good	9.071 \| good	0.353 \| good	7.252 \| good	0.248 \| good
2025-12-07T13:00:00.000Z	44 \| good	8.313 \| good	31.88 \| good	6.888 \| good	0.392 \| good	6.63 \| good	0.306 \| good
2025-12-07T14:00:00.000Z	38 \| good	6.507 \| good	29.329 \| good	6.009 \| good	0.44 \| good	5.519 \| good	0.264 \| good
2025-12-07T14:00:00.000Z	44 \| good	7.899 \| good	29.538 \| good	6.695 \| good	0.39 \| good	6.497 \| good	0.311 \| good
2025-12-07T15:00:00.000Z	27 \| good	5.335 \| good	23.551 \| good	10.102 \| good	1.661 \| good	20.492 \| good	0.351 \| good
2025-12-07T16:00:00.000Z	33 \| good	5.89 \| good	25.799 \| good	9.609 \| good	1.839 \| good	19.755 \| good	0.361 \| good
2025-12-07T17:00:00.000Z	27 \| good	4.554 \| good	20.229 \| good	9.594 \| good	2.017 \| good	19.018 \| good	0.371 \| good
2025-12-07T18:00:00.000Z	27 \| good	4.924 \| good	21.431 \| good	11.37 \| good	2.195 \| good	18.281 \| good	0.381 \| good
2025-12-07T19:00:00.000Z	38 \| good	6.646 \| good	29.132 \| good	14.157 \| good	2.612 \| good	17.111 \| good	0.334 \| good
2025-12-07T20:00:00.000Z	52 \| moderate	9.801 \| good	43.249 \| good	16.417 \| good	3.029 \| good	15.94 \| good	0.287 \| good
2025-12-07T21:00:00.000Z	58 \| moderate	12.522 \| fine	55.425 \| fine	15.445 \| good	3.446 \| good	14.77 \| good	0.241 \| good
2025-12-07T22:00:00.000Z	60 \| moderate	13.591 \| fine	61.029 \| fine	12.965 \| good	3.485 \| good	16.635 \| good	0.239 \| good
2025-12-07T23:00:00.000Z	64 \| moderate	16.22 \| fine	72.078 \| fine	10.95 \| good	3.524 \| good	18.5 \| good	0.237 \| good
2025-12-08T00:00:00.000Z	64 \| moderate	16.211 \| fine	72.587 \| fine	7.823 \| good	3.562 \| good	20.365 \| good	0.236 \| good
2025-12-08T01:00:00.000Z	67 \| moderate	18.291 \| fine	80.897 \| fine	4.194 \| good	3.601 \| good	23.149 \| good	0.301 \| good
2025-12-08T02:00:00.000Z	67 \| moderate	18.281 \| fine	81.383 \| fine	6.229 \| good	3.64 \| good	25.934 \| good	0.367 \| good
2025-12-08T03:00:00.000Z	75 \| moderate	22.036 \| fine	96.592 \| fine	6.053 \| good	3.679 \| good	28.718 \| good	0.433 \| good
2025-12-08T04:00:00.000Z	75 \| moderate	22.251 \| fine	98.181 \| fine	5.779 \| good	3.973 \| good	28.61 \| good	0.452 \| good
2025-12-08T05:00:00.000Z	77 \| moderate	23.012 \| fine	100.939 \| fine	6.227 \| good	4.267 \| good	28.502 \| good	0.472 \| good
2025-12-08T06:00:00.000Z	75 \| moderate	22.147 \| fine	97.3 \| fine	7.503 \| good	4.561 \| good	28.394 \| good	0.492 \| good
2025-12-08T07:00:00.000Z	73 \| moderate	21.026 \| fine	92.404 \| fine	6.961 \| good	4.374 \| good	27.55 \| good	0.476 \| good
2025-12-08T08:00:00.000Z	69 \| moderate	18.992 \| fine	83.911 \| fine	7.117 \| good	4.187 \| good	26.706 \| good	0.46 \| good
2025-12-08T09:00:00.000Z	67 \| moderate	18.401 \| fine	80.919 \| fine	9.141 \| good	4 \| good	25.862 \| good	0.444 \| good
2025-12-08T10:00:00.000Z	64 \| moderate	15.969 \| fine	71.098 \| fine	10.827 \| good	3.578 \| good	24.434 \| good	0.429 \| good
2025-12-08T11:00:00.000Z	60 \| moderate	14.184 \| fine	63.341 \| fine	11.959 \| good	3.157 \| good	23.006 \| good	0.413 \| good
2025-12-08T12:00:00.000Z	58 \| moderate	13.455 \| fine	60.092 \| fine	12.703 \| good	2.735 \| good	21.577 \| good	0.398 \| good
2025-12-08T13:00:00.000Z	56 \| moderate	12.086 \| good	53.813 \| good	10.805 \| good	2.641 \| good	21.23 \| good	0.409 \| good
2025-12-08T14:00:00.000Z	54 \| moderate	11.396 \| good	50.74 \| good	9.602 \| good	2.547 \| good	20.882 \| good	0.42 \| good
2025-12-08T15:00:00.000Z	49 \| good	9.262 \| good	40.574 \| good	8.273 \| good	2.452 \| good	20.534 \| good	0.431 \| good
2025-12-08T16:00:00.000Z	52 \| moderate	10.105 \| good	44.807 \| good	8.666 \| good	2.887 \| good	19.846 \| good	0.403 \| good
2025-12-08T17:00:00.000Z	49 \| good	8.611 \| good	38.076 \| good	10.248 \| good	3.321 \| good	19.158 \| good	0.375 \| good
2025-12-08T18:00:00.000Z	49 \| good	8.759 \| good	38.995 \| good	11.523 \| good	3.756 \| good	18.471 \| good	0.348 \| good
2025-12-08T19:00:00.000Z	49 \| good	8.777 \| good	38.721 \| good	14.52 \| good	3.611 \| good	16.366 \| good	0.301 \| good
2025-12-08T20:00:00.000Z	52 \| moderate	9.785 \| good	43.35 \| good	15.785 \| good	3.466 \| good	14.261 \| good	0.254 \| good
2025-12-08T21:00:00.000Z	52 \| moderate	10.324 \| good	45.895 \| good	15.772 \| good	3.321 \| good	12.156 \| good	0.208 \| good
2025-12-08T22:00:00.000Z	56 \| moderate	11.796 \| good	52.5 \| good	15.146 \| good	3.313 \| good	13.696 \| good	0.211 \| good
2025-12-08T23:00:00.000Z	62 \| moderate	15 \| fine	66.855 \| fine	10.259 \| good	3.305 \| good	15.236 \| good	0.214 \| good
2025-12-09T00:00:00.000Z	64 \| moderate	15.949 \| fine	71.203 \| fine	5.807 \| good	3.298 \| good	16.776 \| good	0.217 \| good
2025-12-09T01:00:00.000Z	67 \| moderate	17.689 \| fine	78.12 \| fine	2.809 \| good	3.26 \| good	20.477 \| good	0.28 \| good
2025-12-09T02:00:00.000Z	66 \| moderate	16.826 \| fine	74.405 \| fine	4.16 \| good	3.222 \| good	24.177 \| good	0.344 \| good
2025-12-09T03:00:00.000Z	69 \| moderate	18.91 \| fine	83.444 \| fine	5.471 \| good	3.184 \| good	27.878 \| good	0.407 \| good
2025-12-09T04:00:00.000Z	67 \| moderate	18.075 \| fine	79.833 \| fine	5.972 \| good	3.442 \| good	27.637 \| good	0.427 \| good
2025-12-09T05:00:00.000Z	67 \| moderate	18.429 \| fine	81.427 \| fine	6.801 \| good	3.701 \| good	27.395 \| good	0.447 \| good
2025-12-09T06:00:00.000Z	66 \| moderate	17.397 \| fine	77.507 \| fine	6.423 \| good	3.959 \| good	27.154 \| good	0.466 \| good
2025-12-09T07:00:00.000Z	64 \| moderate	16.167 \| fine	71.974 \| fine	6.038 \| good	3.753 \| good	26.105 \| good	0.461 \| good
2025-12-09T08:00:00.000Z	60 \| moderate	13.805 \| fine	62.172 \| fine	6.933 \| good	3.546 \| good	25.057 \| good	0.456 \| good
2025-12-09T09:00:00.000Z	58 \| moderate	12.639 \| fine	56.523 \| fine	7.69 \| good	3.34 \| good	24.009 \| good	0.451 \| good
2025-12-09T10:00:00.000Z	52 \| moderate	9.625 \| good	42.707 \| good	9.241 \| good	3.089 \| good	22.993 \| good	0.428 \| good
2025-12-09T11:00:00.000Z	44 \| good	8.212 \| good	36.537 \| good	9.009 \| good	2.838 \| good	21.978 \| good	0.404 \| good
2025-12-09T12:00:00.000Z	49 \| good	8.529 \| good	37.392 \| good	8.66 \| good	2.586 \| good	20.962 \| good	0.381 \| good
2025-12-09T13:00:00.000Z	38 \| good	7.242 \| good	32.423 \| good	7.664 \| good	2.716 \| good	21.399 \| good	0.379 \| good
2025-12-09T14:00:00.000Z	44 \| good	7.579 \| good	33.451 \| good	8.357 \| good	2.845 \| good	21.836 \| good	0.377 \| good

Hayward, California live air quality index now

Major air pollutants in Hayward, 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

Cherryland, California

Fairview, California

Castro Valley, California

Ashland, California

San Lorenzo, California

Union City, California

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Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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