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

The current PM10 concentration at Hayward, California is 27.978 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Hayward, California is 0.493 ppb.

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

The current ozone (O3) concentration at Hayward, California is 36.544 ppm.

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

The current nitrogen dioxide (NO2) concentration at Hayward, California is 4.033 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 6.589 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)

6.59 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

27.98 μg/m³

155

255

425

605+

Ozone (O₃)

36.54 ppb

201

201+

Sulfur Dioxide (SO₂)

0.49 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.03 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.23 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
2025-10-20T23:00:00.000Z	38 \| good	6.648 \| good	24.9 \| good	37.49 \| good	0.587 \| good	4.305 \| good	0.304 \| good
2025-10-21T00:00:00.000Z	35 \| good	5.553 \| good	24.1 \| good	38.313 \| good	0.544 \| good	4.928 \| good	0.276 \| good
2025-10-21T01:00:00.000Z	36 \| good	6.069 \| good	25.843 \| good	39.065 \| good	0.565 \| good	8.673 \| good	0.231 \| good
2025-10-21T02:00:00.000Z	36 \| good	6.051 \| good	22.478 \| good	38.829 \| good	0.863 \| good	5.417 \| good	0.199 \| good
2025-10-21T03:00:00.000Z	58 \| moderate	13.318 \| fine	59.922 \| fine	16.688 \| good	1.501 \| good	37.341 \| good	0.415 \| good
2025-10-21T04:00:00.000Z	44 \| good	7.672 \| good	30.308 \| good	41.192 \| good	0.815 \| good	23.026 \| good	0.371 \| good
2025-10-21T05:00:00.000Z	38 \| good	7.035 \| good	30.886 \| good	37.46 \| good	0.809 \| good	22.926 \| good	0.548 \| good
2025-10-21T06:00:00.000Z	49 \| good	8.918 \| good	31.653 \| good	33.531 \| good	0.755 \| good	15.167 \| good	0.503 \| good
2025-10-21T07:00:00.000Z	52 \| moderate	9.962 \| good	47.93 \| good	32.219 \| good	0.727 \| good	13.127 \| good	0.421 \| good
2025-10-21T08:00:00.000Z	52 \| moderate	10.194 \| good	41.962 \| good	32.483 \| good	0.74 \| good	12.396 \| good	0.389 \| good
2025-10-21T09:00:00.000Z	44 \| good	8.478 \| good	22.117 \| good	31.886 \| good	0.778 \| good	9.565 \| good	0.386 \| good
2025-10-21T10:00:00.000Z	44 \| good	7.653 \| good	30.397 \| good	32.149 \| good	0.804 \| good	10.767 \| good	0.369 \| good
2025-10-21T11:00:00.000Z	33 \| good	6.109 \| good	19.74 \| good	35.887 \| good	0.783 \| good	12.46 \| good	0.399 \| good
2025-10-21T12:00:00.000Z	33 \| good	6.2 \| good	23.962 \| good	35.165 \| good	0.786 \| good	9.443 \| good	0.399 \| good
2025-10-21T13:00:00.000Z	33 \| good	5.99 \| good	22.527 \| good	32.379 \| good	0.84 \| good	11.587 \| good	0.404 \| good
2025-10-21T14:00:00.000Z	27 \| good	5.255 \| good	26.147 \| good	28.33 \| good	0.666 \| good	13.222 \| good	0.483 \| good
2025-10-21T15:00:00.000Z	38 \| good	6.797 \| good	18.338 \| good	31.283 \| good	0.748 \| good	18.814 \| good	0.586 \| good
2025-10-21T16:00:00.000Z	33 \| good	6.267 \| good	24.597 \| good	26.526 \| good	0.755 \| good	20.561 \| good	0.623 \| good
2025-10-21T17:00:00.000Z	38 \| good	7.47 \| good	35.257 \| good	28.502 \| good	0.876 \| good	19.384 \| good	0.694 \| good
2025-10-21T18:00:00.000Z	38 \| good	7.347 \| good	25.24 \| good	26.957 \| good	1.411 \| good	16.179 \| good	0.479 \| good
2025-10-21T19:00:00.000Z	49 \| good	8.786 \| good	39.016 \| good	29.32 \| good	1.504 \| good	12.661 \| good	0.43 \| good
2025-10-21T20:00:00.000Z	49 \| good	9.259 \| good	30.229 \| good	31.194 \| good	1.142 \| good	7.851 \| good	0.298 \| good
2025-10-21T21:00:00.000Z	33 \| good	6.427 \| good	32.055 \| good	35.209 \| good	1.104 \| good	7.287 \| good	0.313 \| good
2025-10-21T22:00:00.000Z	52 \| moderate	9.992 \| good	33.312 \| good	36.407 \| good	0.93 \| good	4.079 \| good	0.278 \| good
2025-10-21T23:00:00.000Z	44 \| good	8.34 \| good	36.786 \| good	37.889 \| good	0.803 \| good	4.301 \| good	0.25 \| good
2025-10-22T00:00:00.000Z	49 \| good	8.648 \| good	37.742 \| good	35.457 \| good	0.67 \| good	6.407 \| good	0.291 \| good
2025-10-22T01:00:00.000Z	35 \| good	6.42 \| good	26.374 \| good	38.103 \| good	0.724 \| good	7.389 \| good	0.353 \| good
2025-10-22T02:00:00.000Z	38 \| good	6.951 \| good	37.607 \| good	37.772 \| good	0.65 \| good	8.943 \| good	0.396 \| good
2025-10-22T03:00:00.000Z	54 \| moderate	10.597 \| good	47.004 \| good	29.17 \| good	2.137 \| good	31.65 \| good	0.345 \| good
2025-10-22T04:00:00.000Z	38 \| good	7.402 \| good	32.123 \| good	37.62 \| good	0.692 \| good	9.468 \| good	0.285 \| good
2025-10-22T05:00:00.000Z	54 \| moderate	10.866 \| good	44.535 \| good	37.536 \| good	0.657 \| good	9.168 \| good	0.272 \| good
2025-10-22T06:00:00.000Z	49 \| good	8.509 \| good	33.249 \| good	37.001 \| good	0.594 \| good	8.632 \| good	0.261 \| good
2025-10-22T07:00:00.000Z	49 \| good	8.523 \| good	44.482 \| good	35.2 \| good	0.581 \| good	8.402 \| good	0.229 \| good
2025-10-22T08:00:00.000Z	52 \| moderate	9.619 \| good	34.976 \| good	32.788 \| good	0.531 \| good	5.923 \| good	0.281 \| good
2025-10-22T09:00:00.000Z	52 \| moderate	9.558 \| good	50.579 \| good	32.507 \| good	0.542 \| good	4.985 \| good	0.216 \| good
2025-10-22T10:00:00.000Z	44 \| good	8.296 \| good	39.922 \| good	32.941 \| good	0.544 \| good	3.058 \| good	0.225 \| good
2025-10-22T11:00:00.000Z	49 \| good	9.164 \| good	37.065 \| good	32.14 \| good	0.557 \| good	2.821 \| good	0.215 \| good
2025-10-22T12:00:00.000Z	44 \| good	7.668 \| good	30.526 \| good	31.695 \| good	0.603 \| good	3.672 \| good	0.186 \| good
2025-10-22T13:00:00.000Z	50 \| good	7.848 \| good	54.375 \| good	29.77 \| good	0.5 \| good	4.464 \| good	0.206 \| good
2025-10-22T14:00:00.000Z	38 \| good	6.689 \| good	28.103 \| good	30.703 \| good	0.846 \| good	4.404 \| good	0.188 \| good
2025-10-22T15:00:00.000Z	33 \| good	5.908 \| good	23.862 \| good	30.275 \| good	0.8 \| good	4.944 \| good	0.226 \| good
2025-10-22T16:00:00.000Z	38 \| good	6.684 \| good	27.081 \| good	30.813 \| good	0.804 \| good	5.897 \| good	0.216 \| good
2025-10-22T17:00:00.000Z	33 \| good	5.979 \| good	26.929 \| good	31.889 \| good	1.095 \| good	5.663 \| good	0.295 \| good
2025-10-22T18:00:00.000Z	33 \| good	5.592 \| good	24.574 \| good	34.855 \| good	1.09 \| good	4.754 \| good	0.232 \| good
2025-10-22T19:00:00.000Z	34 \| good	5.545 \| good	24.385 \| good	36.975 \| good	0.589 \| good	5.201 \| good	0.245 \| good
2025-10-22T20:00:00.000Z	35 \| good	5.812 \| good	25.539 \| good	37.824 \| good	0.438 \| good	4.376 \| good	0.244 \| good
2025-10-22T21:00:00.000Z	35 \| good	5.829 \| good	23.29 \| good	38.125 \| good	0.408 \| good	3.403 \| good	0.198 \| good
2025-10-22T22:00:00.000Z	38 \| good	6.589 \| good	27.978 \| good	36.544 \| good	0.493 \| good	4.033 \| good	0.229 \| good
2025-10-22T22:00:00.000Z	38 \| good	6.589 \| good	27.978 \| good	36.544 \| good	0.493 \| good	4.033 \| good	0.229 \| good
2025-10-22T23:00:00.000Z	31 \| good	4.234 \| good	18.542 \| good	33.885 \| good	0.781 \| good	2.943 \| good	0.13 \| good
2025-10-23T00:00:00.000Z	32 \| good	3.831 \| good	16.854 \| good	35.163 \| good	0.81 \| good	3.218 \| good	0.131 \| good
2025-10-23T01:00:00.000Z	30 \| good	3.914 \| good	17.411 \| good	31.869 \| good	0.953 \| good	7.194 \| good	0.153 \| good
2025-10-23T02:00:00.000Z	27 \| good	4.369 \| good	18.879 \| good	29.041 \| good	1.095 \| good	11.169 \| good	0.175 \| good
2025-10-23T03:00:00.000Z	27 \| good	4.942 \| good	21.315 \| good	25.064 \| good	1.237 \| good	15.145 \| good	0.196 \| good
2025-10-23T04:00:00.000Z	33 \| good	5.522 \| good	24.043 \| good	22.535 \| good	1.272 \| good	17.323 \| good	0.208 \| good
2025-10-23T05:00:00.000Z	22 \| good	4.216 \| good	18.729 \| good	21.143 \| good	1.306 \| good	19.501 \| good	0.22 \| good
2025-10-23T06:00:00.000Z	22 \| good	3.68 \| good	15.653 \| good	21.503 \| good	1.341 \| good	21.679 \| good	0.232 \| good
2025-10-23T07:00:00.000Z	22 \| good	3.506 \| good	15.24 \| good	20.422 \| good	1.261 \| good	19.498 \| good	0.221 \| good
2025-10-23T08:00:00.000Z	18 \| good	3.053 \| good	13.213 \| good	19.3 \| good	1.181 \| good	17.316 \| good	0.21 \| good
2025-10-23T09:00:00.000Z	19 \| good	3.102 \| good	13.412 \| good	19.585 \| good	1.101 \| good	15.135 \| good	0.198 \| good
2025-10-23T10:00:00.000Z	17 \| good	3.476 \| good	15.198 \| good	18.125 \| good	0.996 \| good	12.75 \| good	0.186 \| good
2025-10-23T11:00:00.000Z	22 \| good	3.859 \| good	17.137 \| good	17.14 \| good	0.891 \| good	10.366 \| good	0.173 \| good
2025-10-23T12:00:00.000Z	22 \| good	3.892 \| good	16.831 \| good	19.258 \| good	0.786 \| good	7.982 \| good	0.161 \| good
2025-10-23T13:00:00.000Z	19 \| good	3.171 \| good	13.858 \| good	19.92 \| good	0.831 \| good	9.732 \| good	0.175 \| good
2025-10-23T14:00:00.000Z	16 \| good	3.167 \| good	13.807 \| good	16.754 \| good	0.875 \| good	11.482 \| good	0.189 \| good
2025-10-23T15:00:00.000Z	19 \| good	2.33 \| good	9.609 \| good	20.813 \| good	0.919 \| good	13.231 \| good	0.204 \| good
2025-10-23T16:00:00.000Z	18 \| good	2.545 \| good	10.238 \| good	18.846 \| good	1.019 \| good	10.558 \| good	0.188 \| good
2025-10-23T17:00:00.000Z	22 \| good	4.171 \| good	18.198 \| good	23.162 \| good	1.119 \| good	7.885 \| good	0.173 \| good
2025-10-23T18:00:00.000Z	27 \| good	4.671 \| good	20.636 \| good	27.036 \| good	1.219 \| good	5.212 \| good	0.158 \| good
2025-10-23T19:00:00.000Z	29 \| good	4.669 \| good	20.13 \| good	31.046 \| good	1.285 \| good	4.837 \| good	0.157 \| good
2025-10-23T20:00:00.000Z	32 \| good	4.883 \| good	21.079 \| good	34.746 \| good	1.35 \| good	4.461 \| good	0.155 \| good
2025-10-23T21:00:00.000Z	35 \| good	4.704 \| good	20.218 \| good	38.002 \| good	1.416 \| good	4.085 \| good	0.153 \| good
2025-10-23T22:00:00.000Z	37 \| good	5.016 \| good	21.634 \| good	40.135 \| good	1.462 \| good	4.482 \| good	0.153 \| good
2025-10-23T23:00:00.000Z	37 \| good	6.496 \| good	28.879 \| good	39.672 \| good	1.509 \| good	4.879 \| good	0.154 \| good
2025-10-24T00:00:00.000Z	38 \| good	7.432 \| good	33.027 \| good	38.667 \| good	1.556 \| good	5.276 \| good	0.155 \| good
2025-10-24T01:00:00.000Z	49 \| good	8.599 \| good	37.785 \| good	31.524 \| good	1.573 \| good	10.573 \| good	0.184 \| good
2025-10-24T02:00:00.000Z	52 \| moderate	9.612 \| good	42.849 \| good	23.416 \| good	1.59 \| good	15.871 \| good	0.213 \| good
2025-10-24T03:00:00.000Z	49 \| good	9.061 \| good	40.347 \| good	19.445 \| good	1.607 \| good	21.168 \| good	0.242 \| good
2025-10-24T04:00:00.000Z	49 \| good	8.577 \| good	37.813 \| good	18.077 \| good	1.63 \| good	22.719 \| good	0.255 \| good
2025-10-24T05:00:00.000Z	44 \| good	8.002 \| good	35.16 \| good	16.668 \| good	1.652 \| good	24.269 \| good	0.269 \| good
2025-10-24T06:00:00.000Z	38 \| good	7.113 \| good	31.106 \| good	16.782 \| good	1.674 \| good	25.82 \| good	0.282 \| good
2025-10-24T07:00:00.000Z	38 \| good	6.567 \| good	29.061 \| good	16.048 \| good	1.564 \| good	24.972 \| good	0.268 \| good
2025-10-24T08:00:00.000Z	33 \| good	5.593 \| good	24.077 \| good	15.556 \| good	1.455 \| good	24.123 \| good	0.254 \| good
2025-10-24T09:00:00.000Z	33 \| good	5.502 \| good	23.926 \| good	15.546 \| good	1.346 \| good	23.275 \| good	0.24 \| good
2025-10-24T10:00:00.000Z	27 \| good	4.624 \| good	20.181 \| good	16.052 \| good	1.31 \| good	21.39 \| good	0.226 \| good
2025-10-24T11:00:00.000Z	22 \| good	4.267 \| good	18.86 \| good	18.378 \| good	1.274 \| good	19.504 \| good	0.213 \| good
2025-10-24T12:00:00.000Z	22 \| good	4.42 \| good	19.242 \| good	17.53 \| good	1.239 \| good	17.618 \| good	0.199 \| good
2025-10-24T13:00:00.000Z	22 \| good	4.466 \| good	19.449 \| good	17.444 \| good	1.275 \| good	17.591 \| good	0.206 \| good
2025-10-24T14:00:00.000Z	33 \| good	6.099 \| good	26.979 \| good	13.495 \| good	1.311 \| good	17.563 \| good	0.213 \| good
2025-10-24T15:00:00.000Z	44 \| good	8.309 \| good	36.896 \| good	15.942 \| good	1.347 \| good	17.536 \| good	0.219 \| good
2025-10-24T16:00:00.000Z	27 \| good	5.155 \| good	22.319 \| good	19.671 \| good	1.361 \| good	13.622 \| good	0.192 \| good
2025-10-24T17:00:00.000Z	33 \| good	5.517 \| good	23.832 \| good	23.276 \| good	1.375 \| good	9.709 \| good	0.164 \| good
2025-10-24T18:00:00.000Z	27 \| good	4.762 \| good	20.475 \| good	22.716 \| good	1.389 \| good	5.795 \| good	0.137 \| good
2025-10-24T19:00:00.000Z	27 \| good	5.011 \| good	21.562 \| good	19.978 \| good	1.297 \| good	4.951 \| good	0.131 \| good
2025-10-24T20:00:00.000Z	27 \| good	5.06 \| good	22.075 \| good	22.963 \| good	1.205 \| good	4.107 \| good	0.124 \| good
2025-10-24T21:00:00.000Z	23 \| good	4.152 \| good	18.191 \| good	25.058 \| good	1.114 \| good	3.263 \| good	0.118 \| good
2025-10-24T22:00:00.000Z	27 \| good	2.996 \| good	12.36 \| good	29.342 \| good	1.099 \| good	3.519 \| good	0.117 \| good

Hayward

Get reliable air quality data to drive your business

Hayward, California air quality map: Track AQI near you

0.20ppm

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 05:00:00 on 2025-10-22.

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 06:00:00 on 2025-10-22.

What is the current air quality in Hayward, California?

The current air quality in Hayward, California is 38, 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 6.589 μg/m³.

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

The current PM₁₀ concentration at Hayward, California is 27.978 μg/m³.

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

The current carbon monoxide (CO) concentration at Hayward, California is 0.229 ppm.

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

The current sulfur dioxide (SO₂) concentration at Hayward, California is 0.493 ppb.

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

The current ozone (O₃) concentration at Hayward, California is 36.544 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Hayward, California is 4.033 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-20T23:00:00.000Z	38 \| good	6.648 \| good	24.9 \| good	37.49 \| good	0.587 \| good	4.305 \| good	0.304 \| good
2025-10-21T00:00:00.000Z	35 \| good	5.553 \| good	24.1 \| good	38.313 \| good	0.544 \| good	4.928 \| good	0.276 \| good
2025-10-21T01:00:00.000Z	36 \| good	6.069 \| good	25.843 \| good	39.065 \| good	0.565 \| good	8.673 \| good	0.231 \| good
2025-10-21T02:00:00.000Z	36 \| good	6.051 \| good	22.478 \| good	38.829 \| good	0.863 \| good	5.417 \| good	0.199 \| good
2025-10-21T03:00:00.000Z	58 \| moderate	13.318 \| fine	59.922 \| fine	16.688 \| good	1.501 \| good	37.341 \| good	0.415 \| good
2025-10-21T04:00:00.000Z	44 \| good	7.672 \| good	30.308 \| good	41.192 \| good	0.815 \| good	23.026 \| good	0.371 \| good
2025-10-21T05:00:00.000Z	38 \| good	7.035 \| good	30.886 \| good	37.46 \| good	0.809 \| good	22.926 \| good	0.548 \| good
2025-10-21T06:00:00.000Z	49 \| good	8.918 \| good	31.653 \| good	33.531 \| good	0.755 \| good	15.167 \| good	0.503 \| good
2025-10-21T07:00:00.000Z	52 \| moderate	9.962 \| good	47.93 \| good	32.219 \| good	0.727 \| good	13.127 \| good	0.421 \| good
2025-10-21T08:00:00.000Z	52 \| moderate	10.194 \| good	41.962 \| good	32.483 \| good	0.74 \| good	12.396 \| good	0.389 \| good
2025-10-21T09:00:00.000Z	44 \| good	8.478 \| good	22.117 \| good	31.886 \| good	0.778 \| good	9.565 \| good	0.386 \| good
2025-10-21T10:00:00.000Z	44 \| good	7.653 \| good	30.397 \| good	32.149 \| good	0.804 \| good	10.767 \| good	0.369 \| good
2025-10-21T11:00:00.000Z	33 \| good	6.109 \| good	19.74 \| good	35.887 \| good	0.783 \| good	12.46 \| good	0.399 \| good
2025-10-21T12:00:00.000Z	33 \| good	6.2 \| good	23.962 \| good	35.165 \| good	0.786 \| good	9.443 \| good	0.399 \| good
2025-10-21T13:00:00.000Z	33 \| good	5.99 \| good	22.527 \| good	32.379 \| good	0.84 \| good	11.587 \| good	0.404 \| good
2025-10-21T14:00:00.000Z	27 \| good	5.255 \| good	26.147 \| good	28.33 \| good	0.666 \| good	13.222 \| good	0.483 \| good
2025-10-21T15:00:00.000Z	38 \| good	6.797 \| good	18.338 \| good	31.283 \| good	0.748 \| good	18.814 \| good	0.586 \| good
2025-10-21T16:00:00.000Z	33 \| good	6.267 \| good	24.597 \| good	26.526 \| good	0.755 \| good	20.561 \| good	0.623 \| good
2025-10-21T17:00:00.000Z	38 \| good	7.47 \| good	35.257 \| good	28.502 \| good	0.876 \| good	19.384 \| good	0.694 \| good
2025-10-21T18:00:00.000Z	38 \| good	7.347 \| good	25.24 \| good	26.957 \| good	1.411 \| good	16.179 \| good	0.479 \| good
2025-10-21T19:00:00.000Z	49 \| good	8.786 \| good	39.016 \| good	29.32 \| good	1.504 \| good	12.661 \| good	0.43 \| good
2025-10-21T20:00:00.000Z	49 \| good	9.259 \| good	30.229 \| good	31.194 \| good	1.142 \| good	7.851 \| good	0.298 \| good
2025-10-21T21:00:00.000Z	33 \| good	6.427 \| good	32.055 \| good	35.209 \| good	1.104 \| good	7.287 \| good	0.313 \| good
2025-10-21T22:00:00.000Z	52 \| moderate	9.992 \| good	33.312 \| good	36.407 \| good	0.93 \| good	4.079 \| good	0.278 \| good
2025-10-21T23:00:00.000Z	44 \| good	8.34 \| good	36.786 \| good	37.889 \| good	0.803 \| good	4.301 \| good	0.25 \| good
2025-10-22T00:00:00.000Z	49 \| good	8.648 \| good	37.742 \| good	35.457 \| good	0.67 \| good	6.407 \| good	0.291 \| good
2025-10-22T01:00:00.000Z	35 \| good	6.42 \| good	26.374 \| good	38.103 \| good	0.724 \| good	7.389 \| good	0.353 \| good
2025-10-22T02:00:00.000Z	38 \| good	6.951 \| good	37.607 \| good	37.772 \| good	0.65 \| good	8.943 \| good	0.396 \| good
2025-10-22T03:00:00.000Z	54 \| moderate	10.597 \| good	47.004 \| good	29.17 \| good	2.137 \| good	31.65 \| good	0.345 \| good
2025-10-22T04:00:00.000Z	38 \| good	7.402 \| good	32.123 \| good	37.62 \| good	0.692 \| good	9.468 \| good	0.285 \| good
2025-10-22T05:00:00.000Z	54 \| moderate	10.866 \| good	44.535 \| good	37.536 \| good	0.657 \| good	9.168 \| good	0.272 \| good
2025-10-22T06:00:00.000Z	49 \| good	8.509 \| good	33.249 \| good	37.001 \| good	0.594 \| good	8.632 \| good	0.261 \| good
2025-10-22T07:00:00.000Z	49 \| good	8.523 \| good	44.482 \| good	35.2 \| good	0.581 \| good	8.402 \| good	0.229 \| good
2025-10-22T08:00:00.000Z	52 \| moderate	9.619 \| good	34.976 \| good	32.788 \| good	0.531 \| good	5.923 \| good	0.281 \| good
2025-10-22T09:00:00.000Z	52 \| moderate	9.558 \| good	50.579 \| good	32.507 \| good	0.542 \| good	4.985 \| good	0.216 \| good
2025-10-22T10:00:00.000Z	44 \| good	8.296 \| good	39.922 \| good	32.941 \| good	0.544 \| good	3.058 \| good	0.225 \| good
2025-10-22T11:00:00.000Z	49 \| good	9.164 \| good	37.065 \| good	32.14 \| good	0.557 \| good	2.821 \| good	0.215 \| good
2025-10-22T12:00:00.000Z	44 \| good	7.668 \| good	30.526 \| good	31.695 \| good	0.603 \| good	3.672 \| good	0.186 \| good
2025-10-22T13:00:00.000Z	50 \| good	7.848 \| good	54.375 \| good	29.77 \| good	0.5 \| good	4.464 \| good	0.206 \| good
2025-10-22T14:00:00.000Z	38 \| good	6.689 \| good	28.103 \| good	30.703 \| good	0.846 \| good	4.404 \| good	0.188 \| good
2025-10-22T15:00:00.000Z	33 \| good	5.908 \| good	23.862 \| good	30.275 \| good	0.8 \| good	4.944 \| good	0.226 \| good
2025-10-22T16:00:00.000Z	38 \| good	6.684 \| good	27.081 \| good	30.813 \| good	0.804 \| good	5.897 \| good	0.216 \| good
2025-10-22T17:00:00.000Z	33 \| good	5.979 \| good	26.929 \| good	31.889 \| good	1.095 \| good	5.663 \| good	0.295 \| good
2025-10-22T18:00:00.000Z	33 \| good	5.592 \| good	24.574 \| good	34.855 \| good	1.09 \| good	4.754 \| good	0.232 \| good
2025-10-22T19:00:00.000Z	34 \| good	5.545 \| good	24.385 \| good	36.975 \| good	0.589 \| good	5.201 \| good	0.245 \| good
2025-10-22T20:00:00.000Z	35 \| good	5.812 \| good	25.539 \| good	37.824 \| good	0.438 \| good	4.376 \| good	0.244 \| good
2025-10-22T21:00:00.000Z	35 \| good	5.829 \| good	23.29 \| good	38.125 \| good	0.408 \| good	3.403 \| good	0.198 \| good
2025-10-22T22:00:00.000Z	38 \| good	6.589 \| good	27.978 \| good	36.544 \| good	0.493 \| good	4.033 \| good	0.229 \| good
2025-10-22T22:00:00.000Z	38 \| good	6.589 \| good	27.978 \| good	36.544 \| good	0.493 \| good	4.033 \| good	0.229 \| good
2025-10-22T23:00:00.000Z	31 \| good	4.234 \| good	18.542 \| good	33.885 \| good	0.781 \| good	2.943 \| good	0.13 \| good
2025-10-23T00:00:00.000Z	32 \| good	3.831 \| good	16.854 \| good	35.163 \| good	0.81 \| good	3.218 \| good	0.131 \| good
2025-10-23T01:00:00.000Z	30 \| good	3.914 \| good	17.411 \| good	31.869 \| good	0.953 \| good	7.194 \| good	0.153 \| good
2025-10-23T02:00:00.000Z	27 \| good	4.369 \| good	18.879 \| good	29.041 \| good	1.095 \| good	11.169 \| good	0.175 \| good
2025-10-23T03:00:00.000Z	27 \| good	4.942 \| good	21.315 \| good	25.064 \| good	1.237 \| good	15.145 \| good	0.196 \| good
2025-10-23T04:00:00.000Z	33 \| good	5.522 \| good	24.043 \| good	22.535 \| good	1.272 \| good	17.323 \| good	0.208 \| good
2025-10-23T05:00:00.000Z	22 \| good	4.216 \| good	18.729 \| good	21.143 \| good	1.306 \| good	19.501 \| good	0.22 \| good
2025-10-23T06:00:00.000Z	22 \| good	3.68 \| good	15.653 \| good	21.503 \| good	1.341 \| good	21.679 \| good	0.232 \| good
2025-10-23T07:00:00.000Z	22 \| good	3.506 \| good	15.24 \| good	20.422 \| good	1.261 \| good	19.498 \| good	0.221 \| good
2025-10-23T08:00:00.000Z	18 \| good	3.053 \| good	13.213 \| good	19.3 \| good	1.181 \| good	17.316 \| good	0.21 \| good
2025-10-23T09:00:00.000Z	19 \| good	3.102 \| good	13.412 \| good	19.585 \| good	1.101 \| good	15.135 \| good	0.198 \| good
2025-10-23T10:00:00.000Z	17 \| good	3.476 \| good	15.198 \| good	18.125 \| good	0.996 \| good	12.75 \| good	0.186 \| good
2025-10-23T11:00:00.000Z	22 \| good	3.859 \| good	17.137 \| good	17.14 \| good	0.891 \| good	10.366 \| good	0.173 \| good
2025-10-23T12:00:00.000Z	22 \| good	3.892 \| good	16.831 \| good	19.258 \| good	0.786 \| good	7.982 \| good	0.161 \| good
2025-10-23T13:00:00.000Z	19 \| good	3.171 \| good	13.858 \| good	19.92 \| good	0.831 \| good	9.732 \| good	0.175 \| good
2025-10-23T14:00:00.000Z	16 \| good	3.167 \| good	13.807 \| good	16.754 \| good	0.875 \| good	11.482 \| good	0.189 \| good
2025-10-23T15:00:00.000Z	19 \| good	2.33 \| good	9.609 \| good	20.813 \| good	0.919 \| good	13.231 \| good	0.204 \| good
2025-10-23T16:00:00.000Z	18 \| good	2.545 \| good	10.238 \| good	18.846 \| good	1.019 \| good	10.558 \| good	0.188 \| good
2025-10-23T17:00:00.000Z	22 \| good	4.171 \| good	18.198 \| good	23.162 \| good	1.119 \| good	7.885 \| good	0.173 \| good
2025-10-23T18:00:00.000Z	27 \| good	4.671 \| good	20.636 \| good	27.036 \| good	1.219 \| good	5.212 \| good	0.158 \| good
2025-10-23T19:00:00.000Z	29 \| good	4.669 \| good	20.13 \| good	31.046 \| good	1.285 \| good	4.837 \| good	0.157 \| good
2025-10-23T20:00:00.000Z	32 \| good	4.883 \| good	21.079 \| good	34.746 \| good	1.35 \| good	4.461 \| good	0.155 \| good
2025-10-23T21:00:00.000Z	35 \| good	4.704 \| good	20.218 \| good	38.002 \| good	1.416 \| good	4.085 \| good	0.153 \| good
2025-10-23T22:00:00.000Z	37 \| good	5.016 \| good	21.634 \| good	40.135 \| good	1.462 \| good	4.482 \| good	0.153 \| good
2025-10-23T23:00:00.000Z	37 \| good	6.496 \| good	28.879 \| good	39.672 \| good	1.509 \| good	4.879 \| good	0.154 \| good
2025-10-24T00:00:00.000Z	38 \| good	7.432 \| good	33.027 \| good	38.667 \| good	1.556 \| good	5.276 \| good	0.155 \| good
2025-10-24T01:00:00.000Z	49 \| good	8.599 \| good	37.785 \| good	31.524 \| good	1.573 \| good	10.573 \| good	0.184 \| good
2025-10-24T02:00:00.000Z	52 \| moderate	9.612 \| good	42.849 \| good	23.416 \| good	1.59 \| good	15.871 \| good	0.213 \| good
2025-10-24T03:00:00.000Z	49 \| good	9.061 \| good	40.347 \| good	19.445 \| good	1.607 \| good	21.168 \| good	0.242 \| good
2025-10-24T04:00:00.000Z	49 \| good	8.577 \| good	37.813 \| good	18.077 \| good	1.63 \| good	22.719 \| good	0.255 \| good
2025-10-24T05:00:00.000Z	44 \| good	8.002 \| good	35.16 \| good	16.668 \| good	1.652 \| good	24.269 \| good	0.269 \| good
2025-10-24T06:00:00.000Z	38 \| good	7.113 \| good	31.106 \| good	16.782 \| good	1.674 \| good	25.82 \| good	0.282 \| good
2025-10-24T07:00:00.000Z	38 \| good	6.567 \| good	29.061 \| good	16.048 \| good	1.564 \| good	24.972 \| good	0.268 \| good
2025-10-24T08:00:00.000Z	33 \| good	5.593 \| good	24.077 \| good	15.556 \| good	1.455 \| good	24.123 \| good	0.254 \| good
2025-10-24T09:00:00.000Z	33 \| good	5.502 \| good	23.926 \| good	15.546 \| good	1.346 \| good	23.275 \| good	0.24 \| good
2025-10-24T10:00:00.000Z	27 \| good	4.624 \| good	20.181 \| good	16.052 \| good	1.31 \| good	21.39 \| good	0.226 \| good
2025-10-24T11:00:00.000Z	22 \| good	4.267 \| good	18.86 \| good	18.378 \| good	1.274 \| good	19.504 \| good	0.213 \| good
2025-10-24T12:00:00.000Z	22 \| good	4.42 \| good	19.242 \| good	17.53 \| good	1.239 \| good	17.618 \| good	0.199 \| good
2025-10-24T13:00:00.000Z	22 \| good	4.466 \| good	19.449 \| good	17.444 \| good	1.275 \| good	17.591 \| good	0.206 \| good
2025-10-24T14:00:00.000Z	33 \| good	6.099 \| good	26.979 \| good	13.495 \| good	1.311 \| good	17.563 \| good	0.213 \| good
2025-10-24T15:00:00.000Z	44 \| good	8.309 \| good	36.896 \| good	15.942 \| good	1.347 \| good	17.536 \| good	0.219 \| good
2025-10-24T16:00:00.000Z	27 \| good	5.155 \| good	22.319 \| good	19.671 \| good	1.361 \| good	13.622 \| good	0.192 \| good
2025-10-24T17:00:00.000Z	33 \| good	5.517 \| good	23.832 \| good	23.276 \| good	1.375 \| good	9.709 \| good	0.164 \| good
2025-10-24T18:00:00.000Z	27 \| good	4.762 \| good	20.475 \| good	22.716 \| good	1.389 \| good	5.795 \| good	0.137 \| good
2025-10-24T19:00:00.000Z	27 \| good	5.011 \| good	21.562 \| good	19.978 \| good	1.297 \| good	4.951 \| good	0.131 \| good
2025-10-24T20:00:00.000Z	27 \| good	5.06 \| good	22.075 \| good	22.963 \| good	1.205 \| good	4.107 \| good	0.124 \| good
2025-10-24T21:00:00.000Z	23 \| good	4.152 \| good	18.191 \| good	25.058 \| good	1.114 \| good	3.263 \| good	0.118 \| good
2025-10-24T22:00:00.000Z	27 \| good	2.996 \| good	12.36 \| good	29.342 \| good	1.099 \| good	3.519 \| good	0.117 \| 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)

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

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