What is the sulfur dioxide (SO2) level in Grass Valley, California at the moment?

Currently, Grass Valley, California has a sulfur dioxide (SO2) concentration of 0.261 ppb.

What is the ozone (O3) level in Grass Valley, California at the moment?

The current ozone (O3) level in Grass Valley, California at the moment is 34.456 ppm.

What is the nitrogen dioxide (NO2) level in Grass Valley, California at the moment?

Nitrogen dioxide (NO2) level in Grass Valley, California at the moment is 3.875 ppb.

Live air quality index in Grass Valley, California today

Q: What is the PM2.5 level in Grass Valley, California at the moment?

PM2.5 levels in Grass Valley, California are currently 13.315 μg/m3.

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

The PM10 concentration in Grass Valley, California is 58.353 μg/m3 at the moment.

Stay updated with real-time air quality in Grass 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

Grass Valley, California

Last updated: ... (Local time)

Major air pollutants in Grass Valley, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

13.31 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

58.35 μg/m³

155

255

425

605+

Ozone (O₃)

34.46 ppb

201

201+

Sulfur Dioxide (SO₂)

0.26 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.88 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.21 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

Grass Valley, California

Get Live Pollen Counts

Grass Valley, California

Scroll To Air Quality Map

Track live Grass Valley, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-30T08:00:00.000Z	37 \| good	5.023 \| good	16.499 \| good	39.66 \| good	0.316 \| good	2.952 \| good	0.167 \| good
2026-04-30T09:00:00.000Z	33 \| good	5.806 \| good	23.834 \| good	35.99 \| good	0.337 \| good	3.703 \| good	0.167 \| good
2026-04-30T10:00:00.000Z	31 \| good	4.494 \| good	13.925 \| good	33.16 \| good	0.313 \| good	2.86 \| good	0.184 \| good
2026-04-30T11:00:00.000Z	33 \| good	6.089 \| good	19.632 \| good	30.767 \| good	0.297 \| good	3.533 \| good	0.184 \| good
2026-04-30T12:00:00.000Z	33 \| good	6.134 \| good	14.377 \| good	34.035 \| good	0.274 \| good	2.876 \| good	0.183 \| good
2026-04-30T13:00:00.000Z	38 \| good	6.897 \| good	23.143 \| good	30.876 \| good	0.311 \| good	3.76 \| good	0.251 \| good
2026-04-30T14:00:00.000Z	38 \| good	7.191 \| good	31.042 \| good	32.514 \| good	0.271 \| good	7.05 \| good	0.212 \| good
2026-04-30T15:00:00.000Z	33 \| good	5.783 \| good	16.924 \| good	25.547 \| good	0.356 \| good	7.875 \| good	0.231 \| good
2026-04-30T16:00:00.000Z	38 \| good	6.621 \| good	26.201 \| good	20.892 \| good	0.399 \| good	6.793 \| good	0.212 \| good
2026-04-30T17:00:00.000Z	38 \| good	6.908 \| good	25.971 \| good	26.358 \| good	0.525 \| good	9.377 \| good	0.282 \| good
2026-04-30T18:00:00.000Z	33 \| good	6.156 \| good	15.062 \| good	25.01 \| good	0.528 \| good	7.159 \| good	0.282 \| good
2026-04-30T19:00:00.000Z	27 \| good	4.542 \| good	14.014 \| good	27.077 \| good	0.453 \| good	5.154 \| good	0.244 \| good
2026-04-30T20:00:00.000Z	44 \| good	7.618 \| good	32.096 \| good	31.466 \| good	0.427 \| good	3.867 \| good	0.281 \| good
2026-04-30T21:00:00.000Z	38 \| good	6.785 \| good	31.349 \| good	35.101 \| good	0.42 \| good	3.639 \| good	0.231 \| good
2026-04-30T22:00:00.000Z	38 \| good	7.168 \| good	28.396 \| good	36.397 \| good	0.383 \| good	3.475 \| good	0.281 \| good
2026-04-30T23:00:00.000Z	52 \| moderate	9.553 \| good	31.046 \| good	37.176 \| good	0.391 \| good	3.433 \| good	0.266 \| good
2026-05-01T00:00:00.000Z	45 \| good	5.926 \| good	26.006 \| good	49.283 \| good	0.147 \| good	0.619 \| good	0.125 \| good
2026-05-01T01:00:00.000Z	49 \| good	9.09 \| good	39.453 \| good	42.014 \| good	0.19 \| good	0.5 \| good	0.143 \| good
2026-05-01T02:00:00.000Z	41 \| good	6.293 \| good	28.026 \| good	43.988 \| good	0.253 \| good	3.244 \| good	0.162 \| good
2026-05-01T03:00:00.000Z	40 \| good	6.554 \| good	24.029 \| good	42.858 \| good	0.378 \| good	3.669 \| good	0.265 \| good
2026-05-01T04:00:00.000Z	40 \| good	5.425 \| good	24.177 \| good	42.538 \| good	0.336 \| good	3.537 \| good	0.216 \| good
2026-05-01T05:00:00.000Z	38 \| good	6.538 \| good	24.641 \| good	40.196 \| good	0.338 \| good	5.231 \| good	0.23 \| good
2026-05-01T06:00:00.000Z	38 \| good	7.484 \| good	19.953 \| good	39.288 \| good	0.319 \| good	5.32 \| good	0.215 \| good
2026-05-01T07:00:00.000Z	52 \| moderate	9.662 \| good	31.4 \| good	38.713 \| good	0.298 \| good	3.593 \| good	0.215 \| good
2026-05-01T08:00:00.000Z	33 \| good	5.593 \| good	17.05 \| good	35.863 \| good	0.298 \| good	2.933 \| good	0.164 \| good
2026-05-01T09:00:00.000Z	44 \| good	7.595 \| good	21.045 \| good	32.913 \| good	0.232 \| good	2.836 \| good	0.184 \| good
2026-05-01T10:00:00.000Z	44 \| good	8.159 \| good	37.321 \| good	33.422 \| good	0.253 \| good	2.716 \| good	0.167 \| good
2026-05-01T11:00:00.000Z	44 \| good	7.954 \| good	36.351 \| good	39.125 \| good	0.298 \| good	2.926 \| good	0.167 \| good
2026-05-01T12:00:00.000Z	38 \| good	7.335 \| good	19.142 \| good	35.17 \| good	0.279 \| good	2.248 \| good	0.184 \| good
2026-05-01T13:00:00.000Z	33 \| good	6.443 \| good	21.539 \| good	31.909 \| good	0.275 \| good	2.027 \| good	0.184 \| good
2026-05-01T14:00:00.000Z	38 \| good	7.213 \| good	29.335 \| good	21.338 \| good	0.254 \| good	5.473 \| good	0.212 \| good
2026-05-01T15:00:00.000Z	38 \| good	6.575 \| good	26.558 \| good	26.436 \| good	0.32 \| good	8.282 \| good	0.23 \| good
2026-05-01T16:00:00.000Z	33 \| good	6.276 \| good	31.705 \| good	27.622 \| good	0.339 \| good	6.808 \| good	0.232 \| good
2026-05-01T17:00:00.000Z	33 \| good	5.598 \| good	23.077 \| good	29.392 \| good	0.341 \| good	4.056 \| good	0.212 \| good
2026-05-01T18:00:00.000Z	38 \| good	7.088 \| good	27.936 \| good	27.72 \| good	0.383 \| good	2.673 \| good	0.212 \| good
2026-05-01T19:00:00.000Z	38 \| good	7.262 \| good	26.802 \| good	31.015 \| good	0.295 \| good	2.827 \| good	0.249 \| good
2026-05-01T20:00:00.000Z	52 \| moderate	9.825 \| good	34.898 \| good	31.43 \| good	0.315 \| good	2.753 \| good	0.265 \| good
2026-05-01T21:00:00.000Z	44 \| good	7.872 \| good	24.312 \| good	32.96 \| good	0.301 \| good	2.491 \| good	0.266 \| good
2026-05-01T22:00:00.000Z	44 \| good	8.093 \| good	31.516 \| good	37.074 \| good	0.339 \| good	2.424 \| good	0.266 \| good
2026-05-01T23:00:00.000Z	44 \| good	8.065 \| good	34.24 \| good	41.911 \| good	0.279 \| good	2.691 \| good	0.266 \| good
2026-05-02T00:00:00.000Z	44 \| good	8.458 \| good	30.981 \| good	38.794 \| good	0.322 \| good	3.094 \| good	0.315 \| good
2026-05-02T01:00:00.000Z	49 \| good	8.921 \| good	33.625 \| good	44.242 \| good	0.341 \| good	2.933 \| good	0.3 \| good
2026-05-02T02:00:00.000Z	52 \| moderate	9.798 \| good	48.324 \| good	49.179 \| good	0.344 \| good	3.808 \| good	0.3 \| good
2026-05-02T03:00:00.000Z	49 \| good	9.021 \| good	37.26 \| good	50.77 \| good	0.34 \| good	3.202 \| good	0.266 \| good
2026-05-02T04:00:00.000Z	49 \| good	8.572 \| good	39.723 \| good	45.241 \| good	0.281 \| good	2.978 \| good	0.251 \| good
2026-05-02T05:00:00.000Z	54 \| moderate	10.573 \| good	36.066 \| good	48.668 \| good	0.296 \| good	3.448 \| good	0.212 \| good
2026-05-02T06:00:00.000Z	52 \| moderate	9.822 \| good	33.777 \| good	42 \| good	0.259 \| good	4.091 \| good	0.212 \| good
2026-05-02T07:00:00.000Z	52 \| moderate	10.14 \| good	41.321 \| good	37.302 \| good	0.259 \| good	3.171 \| good	0.212 \| good
2026-05-02T07:00:00.000Z	58 \| moderate	13.315 \| fine	58.353 \| fine	34.456 \| good	0.261 \| good	3.875 \| good	0.213 \| good
2026-05-02T08:00:00.000Z	49 \| good	9.118 \| good	40.311 \| good	39.117 \| good	0.548 \| good	6.484 \| good	0.21 \| good
2026-05-02T09:00:00.000Z	49 \| good	9.073 \| good	40.248 \| good	38.724 \| good	0.497 \| good	6.259 \| good	0.207 \| good
2026-05-02T10:00:00.000Z	44 \| good	8.432 \| good	36.936 \| good	39.641 \| good	0.466 \| good	5.89 \| good	0.2 \| good
2026-05-02T11:00:00.000Z	44 \| good	8.216 \| good	36.247 \| good	37.877 \| good	0.436 \| good	5.521 \| good	0.193 \| good
2026-05-02T12:00:00.000Z	44 \| good	8.242 \| good	36.029 \| good	34.067 \| good	0.406 \| good	5.152 \| good	0.185 \| good
2026-05-02T13:00:00.000Z	44 \| good	7.899 \| good	34.547 \| good	31.443 \| good	0.384 \| good	4.599 \| good	0.187 \| good
2026-05-02T14:00:00.000Z	44 \| good	7.94 \| good	34.797 \| good	30.677 \| good	0.362 \| good	4.045 \| good	0.189 \| good
2026-05-02T15:00:00.000Z	44 \| good	7.953 \| good	34.872 \| good	33.594 \| good	0.34 \| good	3.492 \| good	0.19 \| good
2026-05-02T16:00:00.000Z	44 \| good	8.137 \| good	35.549 \| good	35.086 \| good	0.465 \| good	2.926 \| good	0.173 \| good
2026-05-02T17:00:00.000Z	44 \| good	8.459 \| good	37.24 \| good	43.691 \| good	0.59 \| good	2.359 \| good	0.156 \| good
2026-05-02T18:00:00.000Z	44 \| good	8.119 \| good	35.739 \| good	47.264 \| good	0.715 \| good	1.793 \| good	0.139 \| good
2026-05-02T19:00:00.000Z	45 \| good	7.953 \| good	34.806 \| good	48.846 \| good	0.66 \| good	1.558 \| good	0.135 \| good
2026-05-02T20:00:00.000Z	49 \| good	8.83 \| good	39.201 \| good	50.453 \| good	0.604 \| good	1.323 \| good	0.131 \| good
2026-05-02T21:00:00.000Z	49 \| good	9.305 \| good	41.801 \| good	49.568 \| good	0.549 \| good	1.089 \| good	0.126 \| good
2026-05-02T22:00:00.000Z	49 \| good	8.843 \| good	39.038 \| good	51.366 \| good	0.536 \| good	1.059 \| good	0.126 \| good
2026-05-02T23:00:00.000Z	49 \| good	8.672 \| good	37.877 \| good	50.802 \| good	0.523 \| good	1.029 \| good	0.126 \| good
2026-05-03T00:00:00.000Z	44 \| good	8.284 \| good	36.321 \| good	47.605 \| good	0.51 \| good	0.999 \| good	0.126 \| good
2026-05-03T01:00:00.000Z	44 \| good	8.323 \| good	36.373 \| good	42.207 \| good	0.549 \| good	2.229 \| good	0.141 \| good
2026-05-03T02:00:00.000Z	44 \| good	8.343 \| good	36.647 \| good	36.807 \| good	0.589 \| good	3.458 \| good	0.155 \| good
2026-05-03T03:00:00.000Z	44 \| good	8.264 \| good	36.057 \| good	34.44 \| good	0.628 \| good	4.687 \| good	0.17 \| good
2026-05-03T04:00:00.000Z	49 \| good	8.881 \| good	39.069 \| good	38.74 \| good	0.617 \| good	6.106 \| good	0.192 \| good
2026-05-03T05:00:00.000Z	44 \| good	8.467 \| good	37.549 \| good	40.163 \| good	0.605 \| good	7.524 \| good	0.213 \| good
2026-05-03T06:00:00.000Z	49 \| good	8.621 \| good	38.24 \| good	40.689 \| good	0.594 \| good	8.942 \| good	0.235 \| good
2026-05-03T07:00:00.000Z	49 \| good	8.727 \| good	38.506 \| good	39.69 \| good	0.571 \| good	8.62 \| good	0.23 \| good
2026-05-03T08:00:00.000Z	49 \| good	8.843 \| good	38.972 \| good	35.372 \| good	0.549 \| good	8.298 \| good	0.226 \| good
2026-05-03T09:00:00.000Z	49 \| good	9.211 \| good	41.071 \| good	32.946 \| good	0.526 \| good	7.976 \| good	0.221 \| good
2026-05-03T10:00:00.000Z	49 \| good	9.026 \| good	40.189 \| good	34.626 \| good	0.514 \| good	7.361 \| good	0.209 \| good
2026-05-03T11:00:00.000Z	49 \| good	8.729 \| good	38.462 \| good	34.894 \| good	0.502 \| good	6.747 \| good	0.197 \| good
2026-05-03T12:00:00.000Z	49 \| good	8.715 \| good	38.202 \| good	35.83 \| good	0.49 \| good	6.133 \| good	0.185 \| good
2026-05-03T13:00:00.000Z	49 \| good	8.625 \| good	37.856 \| good	34.149 \| good	0.489 \| good	5.303 \| good	0.179 \| good
2026-05-03T14:00:00.000Z	44 \| good	8.138 \| good	35.765 \| good	27.843 \| good	0.488 \| good	4.473 \| good	0.172 \| good
2026-05-03T15:00:00.000Z	44 \| good	8.376 \| good	36.547 \| good	30.148 \| good	0.488 \| good	3.643 \| good	0.166 \| good
2026-05-03T16:00:00.000Z	49 \| good	8.593 \| good	37.547 \| good	34.323 \| good	0.586 \| good	3.091 \| good	0.157 \| good
2026-05-03T17:00:00.000Z	49 \| good	9.238 \| good	41.303 \| good	35.017 \| good	0.685 \| good	2.539 \| good	0.147 \| good
2026-05-03T18:00:00.000Z	49 \| good	9.204 \| good	41.173 \| good	36.269 \| good	0.784 \| good	1.988 \| good	0.138 \| good
2026-05-03T19:00:00.000Z	49 \| good	8.875 \| good	39.303 \| good	37.358 \| good	0.733 \| good	1.749 \| good	0.134 \| good
2026-05-03T20:00:00.000Z	49 \| good	9.242 \| good	41.37 \| good	40.074 \| good	0.683 \| good	1.51 \| good	0.131 \| good
2026-05-03T21:00:00.000Z	49 \| good	9.04 \| good	39.823 \| good	41.007 \| good	0.632 \| good	1.271 \| good	0.127 \| good
2026-05-03T22:00:00.000Z	49 \| good	8.563 \| good	37.545 \| good	41.109 \| good	0.614 \| good	1.267 \| good	0.128 \| good
2026-05-03T23:00:00.000Z	49 \| good	8.723 \| good	38.682 \| good	37.854 \| good	0.595 \| good	1.264 \| good	0.129 \| good
2026-05-04T00:00:00.000Z	49 \| good	8.816 \| good	39.206 \| good	31.664 \| good	0.576 \| good	1.26 \| good	0.13 \| good
2026-05-04T01:00:00.000Z	49 \| good	9.015 \| good	39.83 \| good	32.299 \| good	0.566 \| good	2.109 \| good	0.14 \| good
2026-05-04T02:00:00.000Z	44 \| good	8.496 \| good	37.503 \| good	31.539 \| good	0.556 \| good	2.958 \| good	0.149 \| good
2026-05-04T03:00:00.000Z	49 \| good	8.832 \| good	39.016 \| good	31.651 \| good	0.546 \| good	3.807 \| good	0.158 \| good
2026-05-04T04:00:00.000Z	49 \| good	9.445 \| good	42.02 \| good	36.655 \| good	0.528 \| good	3.942 \| good	0.156 \| good
2026-05-04T05:00:00.000Z	49 \| good	8.67 \| good	38.412 \| good	36.611 \| good	0.51 \| good	4.077 \| good	0.154 \| good
2026-05-04T06:00:00.000Z	44 \| good	7.75 \| good	9.824 \| good	38.294 \| good	0.494 \| good	4.22 \| good	0.153 \| good
2026-05-04T07:00:00.000Z	49 \| good	8.546 \| good	37.951 \| good	35.039 \| good	0.502 \| good	4.357 \| good	0.154 \| good

Grass Valley

Get reliable air quality data to drive your business

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

0.23ppm

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 Grass Valley, California?

The air quality information for Grass Valley, California is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Grass Valley, California at its worst?

In the past 24 hours, the air quality in Grass Valley, California was at its worst at 05:00:00 on 2026-05-02.

When did Grass Valley, California experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Grass Valley, California was observed at 05:00:00 on 2026-05-01.

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

As of now, the AQI in Grass Valley, California is 58, indicating Moderate conditions.

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

Grass Valley, California air has the highest levels of PM2.5.

What should I do in case of poor air quality in Grass Valley, California?

Poor air quality in Grass Valley, California means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Grass Valley, California at the moment?

PM_2.5 levels in Grass Valley, California are currently 13.315 μg/m³.

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

The PM₁₀ concentration in Grass Valley, California is 58.353 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Grass Valley, California at the moment?

The current carbon monoxide (CO) concentration in Grass Valley, California is 0.213 ppm.

What is the sulfur dioxide (SO₂) level in Grass Valley, California at the moment?

Currently, Grass Valley, California has a sulfur dioxide (SO₂) concentration of 0.261 ppb.

What is the ozone (O₃) level in Grass Valley, California at the moment?

The current ozone (O₃) level in Grass Valley, California at the moment is 34.456 ppm.

What is the nitrogen dioxide (NO₂) level in Grass Valley, California at the moment?

Nitrogen dioxide (NO₂) level in Grass Valley, California at the moment is 3.875 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-04-30T08:00:00.000Z	37 \| good	5.023 \| good	16.499 \| good	39.66 \| good	0.316 \| good	2.952 \| good	0.167 \| good
2026-04-30T09:00:00.000Z	33 \| good	5.806 \| good	23.834 \| good	35.99 \| good	0.337 \| good	3.703 \| good	0.167 \| good
2026-04-30T10:00:00.000Z	31 \| good	4.494 \| good	13.925 \| good	33.16 \| good	0.313 \| good	2.86 \| good	0.184 \| good
2026-04-30T11:00:00.000Z	33 \| good	6.089 \| good	19.632 \| good	30.767 \| good	0.297 \| good	3.533 \| good	0.184 \| good
2026-04-30T12:00:00.000Z	33 \| good	6.134 \| good	14.377 \| good	34.035 \| good	0.274 \| good	2.876 \| good	0.183 \| good
2026-04-30T13:00:00.000Z	38 \| good	6.897 \| good	23.143 \| good	30.876 \| good	0.311 \| good	3.76 \| good	0.251 \| good
2026-04-30T14:00:00.000Z	38 \| good	7.191 \| good	31.042 \| good	32.514 \| good	0.271 \| good	7.05 \| good	0.212 \| good
2026-04-30T15:00:00.000Z	33 \| good	5.783 \| good	16.924 \| good	25.547 \| good	0.356 \| good	7.875 \| good	0.231 \| good
2026-04-30T16:00:00.000Z	38 \| good	6.621 \| good	26.201 \| good	20.892 \| good	0.399 \| good	6.793 \| good	0.212 \| good
2026-04-30T17:00:00.000Z	38 \| good	6.908 \| good	25.971 \| good	26.358 \| good	0.525 \| good	9.377 \| good	0.282 \| good
2026-04-30T18:00:00.000Z	33 \| good	6.156 \| good	15.062 \| good	25.01 \| good	0.528 \| good	7.159 \| good	0.282 \| good
2026-04-30T19:00:00.000Z	27 \| good	4.542 \| good	14.014 \| good	27.077 \| good	0.453 \| good	5.154 \| good	0.244 \| good
2026-04-30T20:00:00.000Z	44 \| good	7.618 \| good	32.096 \| good	31.466 \| good	0.427 \| good	3.867 \| good	0.281 \| good
2026-04-30T21:00:00.000Z	38 \| good	6.785 \| good	31.349 \| good	35.101 \| good	0.42 \| good	3.639 \| good	0.231 \| good
2026-04-30T22:00:00.000Z	38 \| good	7.168 \| good	28.396 \| good	36.397 \| good	0.383 \| good	3.475 \| good	0.281 \| good
2026-04-30T23:00:00.000Z	52 \| moderate	9.553 \| good	31.046 \| good	37.176 \| good	0.391 \| good	3.433 \| good	0.266 \| good
2026-05-01T00:00:00.000Z	45 \| good	5.926 \| good	26.006 \| good	49.283 \| good	0.147 \| good	0.619 \| good	0.125 \| good
2026-05-01T01:00:00.000Z	49 \| good	9.09 \| good	39.453 \| good	42.014 \| good	0.19 \| good	0.5 \| good	0.143 \| good
2026-05-01T02:00:00.000Z	41 \| good	6.293 \| good	28.026 \| good	43.988 \| good	0.253 \| good	3.244 \| good	0.162 \| good
2026-05-01T03:00:00.000Z	40 \| good	6.554 \| good	24.029 \| good	42.858 \| good	0.378 \| good	3.669 \| good	0.265 \| good
2026-05-01T04:00:00.000Z	40 \| good	5.425 \| good	24.177 \| good	42.538 \| good	0.336 \| good	3.537 \| good	0.216 \| good
2026-05-01T05:00:00.000Z	38 \| good	6.538 \| good	24.641 \| good	40.196 \| good	0.338 \| good	5.231 \| good	0.23 \| good
2026-05-01T06:00:00.000Z	38 \| good	7.484 \| good	19.953 \| good	39.288 \| good	0.319 \| good	5.32 \| good	0.215 \| good
2026-05-01T07:00:00.000Z	52 \| moderate	9.662 \| good	31.4 \| good	38.713 \| good	0.298 \| good	3.593 \| good	0.215 \| good
2026-05-01T08:00:00.000Z	33 \| good	5.593 \| good	17.05 \| good	35.863 \| good	0.298 \| good	2.933 \| good	0.164 \| good
2026-05-01T09:00:00.000Z	44 \| good	7.595 \| good	21.045 \| good	32.913 \| good	0.232 \| good	2.836 \| good	0.184 \| good
2026-05-01T10:00:00.000Z	44 \| good	8.159 \| good	37.321 \| good	33.422 \| good	0.253 \| good	2.716 \| good	0.167 \| good
2026-05-01T11:00:00.000Z	44 \| good	7.954 \| good	36.351 \| good	39.125 \| good	0.298 \| good	2.926 \| good	0.167 \| good
2026-05-01T12:00:00.000Z	38 \| good	7.335 \| good	19.142 \| good	35.17 \| good	0.279 \| good	2.248 \| good	0.184 \| good
2026-05-01T13:00:00.000Z	33 \| good	6.443 \| good	21.539 \| good	31.909 \| good	0.275 \| good	2.027 \| good	0.184 \| good
2026-05-01T14:00:00.000Z	38 \| good	7.213 \| good	29.335 \| good	21.338 \| good	0.254 \| good	5.473 \| good	0.212 \| good
2026-05-01T15:00:00.000Z	38 \| good	6.575 \| good	26.558 \| good	26.436 \| good	0.32 \| good	8.282 \| good	0.23 \| good
2026-05-01T16:00:00.000Z	33 \| good	6.276 \| good	31.705 \| good	27.622 \| good	0.339 \| good	6.808 \| good	0.232 \| good
2026-05-01T17:00:00.000Z	33 \| good	5.598 \| good	23.077 \| good	29.392 \| good	0.341 \| good	4.056 \| good	0.212 \| good
2026-05-01T18:00:00.000Z	38 \| good	7.088 \| good	27.936 \| good	27.72 \| good	0.383 \| good	2.673 \| good	0.212 \| good
2026-05-01T19:00:00.000Z	38 \| good	7.262 \| good	26.802 \| good	31.015 \| good	0.295 \| good	2.827 \| good	0.249 \| good
2026-05-01T20:00:00.000Z	52 \| moderate	9.825 \| good	34.898 \| good	31.43 \| good	0.315 \| good	2.753 \| good	0.265 \| good
2026-05-01T21:00:00.000Z	44 \| good	7.872 \| good	24.312 \| good	32.96 \| good	0.301 \| good	2.491 \| good	0.266 \| good
2026-05-01T22:00:00.000Z	44 \| good	8.093 \| good	31.516 \| good	37.074 \| good	0.339 \| good	2.424 \| good	0.266 \| good
2026-05-01T23:00:00.000Z	44 \| good	8.065 \| good	34.24 \| good	41.911 \| good	0.279 \| good	2.691 \| good	0.266 \| good
2026-05-02T00:00:00.000Z	44 \| good	8.458 \| good	30.981 \| good	38.794 \| good	0.322 \| good	3.094 \| good	0.315 \| good
2026-05-02T01:00:00.000Z	49 \| good	8.921 \| good	33.625 \| good	44.242 \| good	0.341 \| good	2.933 \| good	0.3 \| good
2026-05-02T02:00:00.000Z	52 \| moderate	9.798 \| good	48.324 \| good	49.179 \| good	0.344 \| good	3.808 \| good	0.3 \| good
2026-05-02T03:00:00.000Z	49 \| good	9.021 \| good	37.26 \| good	50.77 \| good	0.34 \| good	3.202 \| good	0.266 \| good
2026-05-02T04:00:00.000Z	49 \| good	8.572 \| good	39.723 \| good	45.241 \| good	0.281 \| good	2.978 \| good	0.251 \| good
2026-05-02T05:00:00.000Z	54 \| moderate	10.573 \| good	36.066 \| good	48.668 \| good	0.296 \| good	3.448 \| good	0.212 \| good
2026-05-02T06:00:00.000Z	52 \| moderate	9.822 \| good	33.777 \| good	42 \| good	0.259 \| good	4.091 \| good	0.212 \| good
2026-05-02T07:00:00.000Z	52 \| moderate	10.14 \| good	41.321 \| good	37.302 \| good	0.259 \| good	3.171 \| good	0.212 \| good
2026-05-02T07:00:00.000Z	58 \| moderate	13.315 \| fine	58.353 \| fine	34.456 \| good	0.261 \| good	3.875 \| good	0.213 \| good
2026-05-02T08:00:00.000Z	49 \| good	9.118 \| good	40.311 \| good	39.117 \| good	0.548 \| good	6.484 \| good	0.21 \| good
2026-05-02T09:00:00.000Z	49 \| good	9.073 \| good	40.248 \| good	38.724 \| good	0.497 \| good	6.259 \| good	0.207 \| good
2026-05-02T10:00:00.000Z	44 \| good	8.432 \| good	36.936 \| good	39.641 \| good	0.466 \| good	5.89 \| good	0.2 \| good
2026-05-02T11:00:00.000Z	44 \| good	8.216 \| good	36.247 \| good	37.877 \| good	0.436 \| good	5.521 \| good	0.193 \| good
2026-05-02T12:00:00.000Z	44 \| good	8.242 \| good	36.029 \| good	34.067 \| good	0.406 \| good	5.152 \| good	0.185 \| good
2026-05-02T13:00:00.000Z	44 \| good	7.899 \| good	34.547 \| good	31.443 \| good	0.384 \| good	4.599 \| good	0.187 \| good
2026-05-02T14:00:00.000Z	44 \| good	7.94 \| good	34.797 \| good	30.677 \| good	0.362 \| good	4.045 \| good	0.189 \| good
2026-05-02T15:00:00.000Z	44 \| good	7.953 \| good	34.872 \| good	33.594 \| good	0.34 \| good	3.492 \| good	0.19 \| good
2026-05-02T16:00:00.000Z	44 \| good	8.137 \| good	35.549 \| good	35.086 \| good	0.465 \| good	2.926 \| good	0.173 \| good
2026-05-02T17:00:00.000Z	44 \| good	8.459 \| good	37.24 \| good	43.691 \| good	0.59 \| good	2.359 \| good	0.156 \| good
2026-05-02T18:00:00.000Z	44 \| good	8.119 \| good	35.739 \| good	47.264 \| good	0.715 \| good	1.793 \| good	0.139 \| good
2026-05-02T19:00:00.000Z	45 \| good	7.953 \| good	34.806 \| good	48.846 \| good	0.66 \| good	1.558 \| good	0.135 \| good
2026-05-02T20:00:00.000Z	49 \| good	8.83 \| good	39.201 \| good	50.453 \| good	0.604 \| good	1.323 \| good	0.131 \| good
2026-05-02T21:00:00.000Z	49 \| good	9.305 \| good	41.801 \| good	49.568 \| good	0.549 \| good	1.089 \| good	0.126 \| good
2026-05-02T22:00:00.000Z	49 \| good	8.843 \| good	39.038 \| good	51.366 \| good	0.536 \| good	1.059 \| good	0.126 \| good
2026-05-02T23:00:00.000Z	49 \| good	8.672 \| good	37.877 \| good	50.802 \| good	0.523 \| good	1.029 \| good	0.126 \| good
2026-05-03T00:00:00.000Z	44 \| good	8.284 \| good	36.321 \| good	47.605 \| good	0.51 \| good	0.999 \| good	0.126 \| good
2026-05-03T01:00:00.000Z	44 \| good	8.323 \| good	36.373 \| good	42.207 \| good	0.549 \| good	2.229 \| good	0.141 \| good
2026-05-03T02:00:00.000Z	44 \| good	8.343 \| good	36.647 \| good	36.807 \| good	0.589 \| good	3.458 \| good	0.155 \| good
2026-05-03T03:00:00.000Z	44 \| good	8.264 \| good	36.057 \| good	34.44 \| good	0.628 \| good	4.687 \| good	0.17 \| good
2026-05-03T04:00:00.000Z	49 \| good	8.881 \| good	39.069 \| good	38.74 \| good	0.617 \| good	6.106 \| good	0.192 \| good
2026-05-03T05:00:00.000Z	44 \| good	8.467 \| good	37.549 \| good	40.163 \| good	0.605 \| good	7.524 \| good	0.213 \| good
2026-05-03T06:00:00.000Z	49 \| good	8.621 \| good	38.24 \| good	40.689 \| good	0.594 \| good	8.942 \| good	0.235 \| good
2026-05-03T07:00:00.000Z	49 \| good	8.727 \| good	38.506 \| good	39.69 \| good	0.571 \| good	8.62 \| good	0.23 \| good
2026-05-03T08:00:00.000Z	49 \| good	8.843 \| good	38.972 \| good	35.372 \| good	0.549 \| good	8.298 \| good	0.226 \| good
2026-05-03T09:00:00.000Z	49 \| good	9.211 \| good	41.071 \| good	32.946 \| good	0.526 \| good	7.976 \| good	0.221 \| good
2026-05-03T10:00:00.000Z	49 \| good	9.026 \| good	40.189 \| good	34.626 \| good	0.514 \| good	7.361 \| good	0.209 \| good
2026-05-03T11:00:00.000Z	49 \| good	8.729 \| good	38.462 \| good	34.894 \| good	0.502 \| good	6.747 \| good	0.197 \| good
2026-05-03T12:00:00.000Z	49 \| good	8.715 \| good	38.202 \| good	35.83 \| good	0.49 \| good	6.133 \| good	0.185 \| good
2026-05-03T13:00:00.000Z	49 \| good	8.625 \| good	37.856 \| good	34.149 \| good	0.489 \| good	5.303 \| good	0.179 \| good
2026-05-03T14:00:00.000Z	44 \| good	8.138 \| good	35.765 \| good	27.843 \| good	0.488 \| good	4.473 \| good	0.172 \| good
2026-05-03T15:00:00.000Z	44 \| good	8.376 \| good	36.547 \| good	30.148 \| good	0.488 \| good	3.643 \| good	0.166 \| good
2026-05-03T16:00:00.000Z	49 \| good	8.593 \| good	37.547 \| good	34.323 \| good	0.586 \| good	3.091 \| good	0.157 \| good
2026-05-03T17:00:00.000Z	49 \| good	9.238 \| good	41.303 \| good	35.017 \| good	0.685 \| good	2.539 \| good	0.147 \| good
2026-05-03T18:00:00.000Z	49 \| good	9.204 \| good	41.173 \| good	36.269 \| good	0.784 \| good	1.988 \| good	0.138 \| good
2026-05-03T19:00:00.000Z	49 \| good	8.875 \| good	39.303 \| good	37.358 \| good	0.733 \| good	1.749 \| good	0.134 \| good
2026-05-03T20:00:00.000Z	49 \| good	9.242 \| good	41.37 \| good	40.074 \| good	0.683 \| good	1.51 \| good	0.131 \| good
2026-05-03T21:00:00.000Z	49 \| good	9.04 \| good	39.823 \| good	41.007 \| good	0.632 \| good	1.271 \| good	0.127 \| good
2026-05-03T22:00:00.000Z	49 \| good	8.563 \| good	37.545 \| good	41.109 \| good	0.614 \| good	1.267 \| good	0.128 \| good
2026-05-03T23:00:00.000Z	49 \| good	8.723 \| good	38.682 \| good	37.854 \| good	0.595 \| good	1.264 \| good	0.129 \| good
2026-05-04T00:00:00.000Z	49 \| good	8.816 \| good	39.206 \| good	31.664 \| good	0.576 \| good	1.26 \| good	0.13 \| good
2026-05-04T01:00:00.000Z	49 \| good	9.015 \| good	39.83 \| good	32.299 \| good	0.566 \| good	2.109 \| good	0.14 \| good
2026-05-04T02:00:00.000Z	44 \| good	8.496 \| good	37.503 \| good	31.539 \| good	0.556 \| good	2.958 \| good	0.149 \| good
2026-05-04T03:00:00.000Z	49 \| good	8.832 \| good	39.016 \| good	31.651 \| good	0.546 \| good	3.807 \| good	0.158 \| good
2026-05-04T04:00:00.000Z	49 \| good	9.445 \| good	42.02 \| good	36.655 \| good	0.528 \| good	3.942 \| good	0.156 \| good
2026-05-04T05:00:00.000Z	49 \| good	8.67 \| good	38.412 \| good	36.611 \| good	0.51 \| good	4.077 \| good	0.154 \| good
2026-05-04T06:00:00.000Z	44 \| good	7.75 \| good	9.824 \| good	38.294 \| good	0.494 \| good	4.22 \| good	0.153 \| good
2026-05-04T07:00:00.000Z	49 \| good	8.546 \| good	37.951 \| good	35.039 \| good	0.502 \| good	4.357 \| good	0.154 \| good

Live air quality index in Grass Valley, California today

Major air pollutants in Grass 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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Grass Valley, California air quality map: Stay updated on AQI near you

Air quality in nearby cities

North Auburn, California

Auburn, California

Lincoln, California

Linda, California

Olivehurst, California

Marysville, 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 PM_2.5 level in Grass Valley, California at the moment?

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What is the nitrogen dioxide (NO₂) level in Grass Valley, California at the moment?