What is the current level of PM10 in Westmont, California?

Westmont, California currently has a PM10 concentration of 53.973 μg/m3.

What is the current level of sulfur dioxide (SO2) in Westmont, California?

The current sulfur dioxide (SO2) concentration in Westmont, California is 0.59 ppb.

What is the current level of ozone (O3) in Westmont, California?

Westmont, California currently has an ozone (O3) concentration of 30.287 ppm.

What is the current level of nitrogen dioxide (NO2) in Westmont, California?

The current level of nitrogen dioxide (NO2) in Westmont, California is 21.287 ppb.

Current air quality index in Westmont, California today

Q: What is the PM2.5 concentration in Westmont, California right now?

Westmont, California currently has a PM2.5 concentration of 12.845 μg/m3.

Stay updated with real-time air quality in Westmont, 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

Westmont, California

Last updated: ... (Local time)

Common air pollutants in Westmont, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

12.17 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

49.01 μg/m³

155

255

425

605+

Ozone (O₃)

33.97 ppb

201

201+

Sulfur Dioxide (SO₂)

0.64 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

20.64 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.42 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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Westmont, California

Scroll To Air Quality Map

Track live Westmont, California air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-06T00:00:00.000Z	28 \| good	2.637 \| good	13.785 \| good	30.465 \| good	0.453 \| good	17.767 \| good	0.296 \| good
2025-12-06T01:00:00.000Z	28 \| good	3.383 \| good	15.326 \| good	30.365 \| good	0.309 \| good	25.057 \| good	0.386 \| good
2025-12-06T02:00:00.000Z	25 \| good	3.464 \| good	14.859 \| good	23.257 \| good	0.317 \| good	26.464 \| good	0.527 \| good
2025-12-06T03:00:00.000Z	52 \| moderate	9.509 \| good	30.822 \| good	19.811 \| good	0.511 \| good	32.284 \| good	0.764 \| good
2025-12-06T04:00:00.000Z	49 \| good	9.308 \| good	44.046 \| good	10.548 \| good	0.884 \| good	35.329 \| good	1.089 \| good
2025-12-06T05:00:00.000Z	63 \| moderate	15.069 \| fine	80.045 \| fine	10.728 \| good	0.8 \| good	33.558 \| good	1.418 \| good
2025-12-06T06:00:00.000Z	54 \| moderate	11.489 \| good	42.072 \| good	9.342 \| good	0.987 \| good	32.875 \| good	1.225 \| good
2025-12-06T07:00:00.000Z	69 \| moderate	18.616 \| fine	72.706 \| fine	7.188 \| good	0.99 \| good	33.447 \| good	1.2 \| good
2025-12-06T08:00:00.000Z	66 \| moderate	16.92 \| fine	63.877 \| fine	4.704 \| good	0.829 \| good	34.295 \| good	1.425 \| good
2025-12-06T09:00:00.000Z	60 \| moderate	14.486 \| fine	57.597 \| fine	3.902 \| good	0.738 \| good	31.32 \| good	1.212 \| good
2025-12-06T10:00:00.000Z	58 \| moderate	13.458 \| fine	44.279 \| good	4.312 \| good	0.823 \| good	30.214 \| good	1.32 \| good
2025-12-06T11:00:00.000Z	49 \| good	9.189 \| good	34.755 \| good	4.411 \| good	0.975 \| good	28.107 \| good	1.221 \| good
2025-12-06T12:00:00.000Z	54 \| moderate	11.13 \| good	60.08 \| fine	2.443 \| good	0.713 \| good	30.011 \| good	1.218 \| good
2025-12-06T13:00:00.000Z	54 \| moderate	11.301 \| good	39.036 \| good	2.293 \| good	0.698 \| good	30.253 \| good	1.222 \| good
2025-12-06T14:00:00.000Z	77 \| moderate	22.756 \| fine	73.861 \| fine	1.545 \| good	0.797 \| good	24.848 \| good	1.14 \| good
2025-12-06T15:00:00.000Z	64 \| moderate	16.46 \| fine	81.495 \| fine	2.331 \| good	0.9 \| good	25.466 \| good	1.334 \| good
2025-12-06T16:00:00.000Z	66 \| moderate	17.111 \| fine	77.182 \| fine	4.957 \| good	0.993 \| good	28.408 \| good	1.197 \| good
2025-12-06T17:00:00.000Z	62 \| moderate	14.948 \| fine	75.578 \| fine	7.946 \| good	0.85 \| good	27.679 \| good	0.901 \| good
2025-12-06T18:00:00.000Z	60 \| moderate	13.622 \| fine	46.969 \| good	10.87 \| good	0.757 \| good	20.746 \| good	0.641 \| good
2025-12-06T19:00:00.000Z	41 \| good	6.71 \| good	44.257 \| good	17.72 \| good	1.027 \| good	21.737 \| good	0.467 \| good
2025-12-06T20:00:00.000Z	54 \| moderate	10.628 \| good	54.866 \| good	21.892 \| good	0.829 \| good	22.782 \| good	0.441 \| good
2025-12-06T21:00:00.000Z	49 \| good	9.355 \| good	34.848 \| good	24.855 \| good	0.911 \| good	24.827 \| good	0.37 \| good
2025-12-06T22:00:00.000Z	26 \| good	3.462 \| good	14.05 \| good	27.598 \| good	0.606 \| good	20.67 \| good	0.325 \| good
2025-12-06T23:00:00.000Z	33 \| good	6.032 \| good	14.219 \| good	34.579 \| good	0.755 \| good	19.497 \| good	0.34 \| good
2025-12-07T00:00:00.000Z	49 \| good	8.791 \| good	29.393 \| good	29.381 \| good	0.77 \| good	19.199 \| good	0.366 \| good
2025-12-07T01:00:00.000Z	44 \| good	8.164 \| good	28.875 \| good	26.938 \| good	0.696 \| good	18.01 \| good	0.331 \| good
2025-12-07T02:00:00.000Z	38 \| good	7.487 \| good	27.766 \| good	21.567 \| good	0.587 \| good	23.632 \| good	0.481 \| good
2025-12-07T03:00:00.000Z	54 \| moderate	10.743 \| good	35.662 \| good	14.229 \| good	0.545 \| good	28.4 \| good	0.614 \| good
2025-12-07T04:00:00.000Z	56 \| moderate	12.483 \| fine	25.534 \| good	12.575 \| good	0.659 \| good	32.244 \| good	0.869 \| good
2025-12-07T05:00:00.000Z	75 \| moderate	22.485 \| fine	61.867 \| fine	12.959 \| good	0.757 \| good	31.612 \| good	1.04 \| good
2025-12-07T06:00:00.000Z	86 \| moderate	28.068 \| fine	105.605 \| fine	3.168 \| good	0.763 \| good	30.566 \| good	1.343 \| good
2025-12-07T07:00:00.000Z	73 \| moderate	20.732 \| fine	36.66 \| good	3.782 \| good	0.676 \| good	30.271 \| good	1.345 \| good
2025-12-07T08:00:00.000Z	81 \| moderate	24.561 \| fine	28.757 \| good	4.741 \| good	0.942 \| good	28.438 \| good	1.367 \| good
2025-12-07T09:00:00.000Z	92 \| moderate	30.949 \| fine	112.626 \| fine	3.787 \| good	0.634 \| good	26.909 \| good	1.289 \| good
2025-12-07T10:00:00.000Z	90 \| moderate	30.034 \| fine	95.227 \| fine	3.937 \| good	0.949 \| good	24.83 \| good	1.336 \| good
2025-12-07T11:00:00.000Z	69 \| moderate	18.907 \| fine	59.436 \| fine	5.83 \| good	0.945 \| good	25.448 \| good	1.35 \| good
2025-12-07T12:00:00.000Z	88 \| moderate	28.737 \| fine	87.517 \| fine	3.916 \| good	0.937 \| good	28.294 \| good	1.431 \| good
2025-12-07T13:00:00.000Z	86 \| moderate	27.671 \| fine	105.81 \| fine	2.091 \| good	0.818 \| good	5.683 \| good	0.539 \| good
2025-12-07T14:00:00.000Z	76 \| moderate	19.88 \| fine	106.37 \| fine	2.969 \| good	0.574 \| good	17.924 \| good	1.234 \| good
2025-12-07T15:00:00.000Z	77 \| moderate	23.128 \| fine	81.231 \| fine	3.745 \| good	0.655 \| good	24.713 \| good	1.208 \| good
2025-12-07T16:00:00.000Z	90 \| moderate	30.422 \| fine	58.351 \| fine	3.399 \| good	0.696 \| good	21.114 \| good	1.158 \| good
2025-12-07T17:00:00.000Z	79 \| moderate	23.976 \| fine	88.709 \| fine	8.487 \| good	0.626 \| good	25.144 \| good	0.836 \| good
2025-12-07T18:00:00.000Z	62 \| moderate	15.209 \| fine	52.132 \| good	13.674 \| good	0.545 \| good	23.246 \| good	0.66 \| good
2025-12-07T19:00:00.000Z	68 \| moderate	15.795 \| fine	90.219 \| fine	19.687 \| good	0.639 \| good	20.021 \| good	0.488 \| good
2025-12-07T20:00:00.000Z	67 \| moderate	18.008 \| fine	77.632 \| fine	27.045 \| good	0.791 \| good	15.91 \| good	0.438 \| good
2025-12-07T21:00:00.000Z	67 \| moderate	17.973 \| fine	87.768 \| fine	32.43 \| good	0.606 \| good	13.676 \| good	0.403 \| good
2025-12-07T22:00:00.000Z	77 \| moderate	23.181 \| fine	81.944 \| fine	33.881 \| good	0.667 \| good	16.638 \| good	0.388 \| good
2025-12-07T23:00:00.000Z	66 \| moderate	17.264 \| fine	59.364 \| fine	36.26 \| good	0.905 \| good	17.717 \| good	0.387 \| good
2025-12-07T23:00:00.000Z	56 \| moderate	12.169 \| fine	49.008 \| good	33.966 \| good	0.638 \| good	20.636 \| good	0.423 \| good
2025-12-07T23:00:00.000Z	71 \| moderate	20.124 \| fine	88.959 \| fine	38.265 \| good	5.527 \| good	32.16 \| good	0.34 \| good
2025-12-08T00:00:00.000Z	77 \| moderate	22.846 \| fine	100.409 \| fine	37.681 \| good	5.38 \| good	35.155 \| good	0.357 \| good
2025-12-08T01:00:00.000Z	79 \| moderate	24.028 \| fine	104.627 \| fine	34.117 \| good	5.093 \| good	35.877 \| good	0.41 \| good
2025-12-08T02:00:00.000Z	79 \| moderate	24.092 \| fine	105.707 \| fine	25.222 \| good	4.806 \| good	36.6 \| good	0.464 \| good
2025-12-08T03:00:00.000Z	84 \| moderate	26.617 \| fine	115.512 \| fine	12.594 \| good	4.519 \| good	37.322 \| good	0.518 \| good
2025-12-08T04:00:00.000Z	88 \| moderate	29.18 \| fine	126.719 \| fine	4.031 \| good	4.37 \| good	35.235 \| good	0.546 \| good
2025-12-08T05:00:00.000Z	86 \| moderate	28.236 \| fine	122.452 \| fine	4.084 \| good	4.221 \| good	33.147 \| good	0.574 \| good
2025-12-08T06:00:00.000Z	84 \| moderate	26.816 \| fine	116.47 \| fine	4.457 \| good	4.072 \| good	31.06 \| good	0.602 \| good
2025-12-08T07:00:00.000Z	84 \| moderate	27.066 \| fine	117.611 \| fine	4.936 \| good	3.7 \| good	31.141 \| good	0.583 \| good
2025-12-08T08:00:00.000Z	82 \| moderate	26.098 \| fine	113.365 \| fine	4.834 \| good	3.328 \| good	31.222 \| good	0.564 \| good
2025-12-08T09:00:00.000Z	79 \| moderate	23.653 \| fine	103.74 \| fine	4.432 \| good	2.956 \| good	31.303 \| good	0.544 \| good
2025-12-08T10:00:00.000Z	82 \| moderate	26.015 \| fine	113.501 \| fine	6.03 \| good	2.764 \| good	30.615 \| good	0.494 \| good
2025-12-08T11:00:00.000Z	82 \| moderate	26.093 \| fine	113.397 \| fine	2.599 \| good	2.573 \| good	29.926 \| good	0.444 \| good
2025-12-08T12:00:00.000Z	79 \| moderate	23.659 \| fine	103.216 \| fine	1.712 \| good	2.382 \| good	29.238 \| good	0.394 \| good
2025-12-08T13:00:00.000Z	79 \| moderate	24.186 \| fine	105.365 \| fine	0.896 \| good	2.494 \| good	28.177 \| good	0.377 \| good
2025-12-08T14:00:00.000Z	71 \| moderate	20.121 \| fine	88.71 \| fine	0.456 \| good	2.606 \| good	27.117 \| good	0.359 \| good
2025-12-08T15:00:00.000Z	64 \| moderate	16.251 \| fine	72.315 \| fine	1.023 \| good	2.718 \| good	26.057 \| good	0.342 \| good
2025-12-08T16:00:00.000Z	62 \| moderate	15.38 \| fine	68.589 \| fine	2.443 \| good	3.041 \| good	24.811 \| good	0.348 \| good
2025-12-08T17:00:00.000Z	67 \| moderate	17.606 \| fine	77.751 \| fine	6.623 \| good	3.363 \| good	23.565 \| good	0.354 \| good
2025-12-08T18:00:00.000Z	66 \| moderate	17.243 \| fine	76.026 \| fine	16.699 \| good	3.685 \| good	22.319 \| good	0.36 \| good
2025-12-08T19:00:00.000Z	62 \| moderate	15.396 \| fine	68.987 \| fine	24.129 \| good	3.817 \| good	21.528 \| good	0.324 \| good
2025-12-08T20:00:00.000Z	60 \| moderate	13.872 \| fine	61.997 \| fine	29.557 \| good	3.948 \| good	20.737 \| good	0.288 \| good
2025-12-08T21:00:00.000Z	58 \| moderate	13.497 \| fine	60.353 \| fine	32.812 \| good	4.079 \| good	19.946 \| good	0.253 \| good
2025-12-08T22:00:00.000Z	52 \| moderate	9.645 \| good	42.56 \| good	34.72 \| good	3.873 \| good	21.449 \| good	0.257 \| good
2025-12-08T23:00:00.000Z	38 \| good	6.635 \| good	29.535 \| good	33.555 \| good	3.667 \| good	22.952 \| good	0.261 \| good
2025-12-09T00:00:00.000Z	33 \| good	5.66 \| good	24.98 \| good	29.219 \| good	3.461 \| good	24.455 \| good	0.265 \| good
2025-12-09T01:00:00.000Z	38 \| good	7.382 \| good	32.215 \| good	17.36 \| good	3.263 \| good	26.851 \| good	0.286 \| good
2025-12-09T02:00:00.000Z	54 \| moderate	11.348 \| good	50.668 \| good	4.317 \| good	3.066 \| good	29.246 \| good	0.306 \| good
2025-12-09T03:00:00.000Z	62 \| moderate	15.148 \| fine	67.839 \| fine	0.915 \| good	2.868 \| good	31.641 \| good	0.327 \| good
2025-12-09T04:00:00.000Z	67 \| moderate	18.285 \| fine	81.162 \| fine	1.264 \| good	2.97 \| good	31.397 \| good	0.323 \| good
2025-12-09T05:00:00.000Z	60 \| moderate	14.303 \| fine	63.813 \| fine	1.668 \| good	3.071 \| good	31.153 \| good	0.318 \| good
2025-12-09T06:00:00.000Z	56 \| moderate	11.66 \| good	51.978 \| good	1.48 \| good	3.173 \| good	30.909 \| good	0.314 \| good
2025-12-09T07:00:00.000Z	44 \| good	8.159 \| good	36.112 \| good	1.543 \| good	2.879 \| good	29.581 \| good	0.292 \| good
2025-12-09T08:00:00.000Z	38 \| good	6.743 \| good	29.497 \| good	2.276 \| good	2.585 \| good	28.254 \| good	0.27 \| good
2025-12-09T09:00:00.000Z	25 \| good	3.665 \| good	15.972 \| good	2.766 \| good	2.291 \| good	26.927 \| good	0.248 \| good
2025-12-09T10:00:00.000Z	24 \| good	2.026 \| good	8.398 \| good	2.815 \| good	2.183 \| good	25.229 \| good	0.224 \| good
2025-12-09T11:00:00.000Z	23 \| good	2.085 \| good	8.52 \| good	3.195 \| good	2.075 \| good	23.531 \| good	0.201 \| good
2025-12-09T12:00:00.000Z	21 \| good	1.93 \| good	8.036 \| good	2.076 \| good	1.966 \| good	21.833 \| good	0.178 \| good
2025-12-09T13:00:00.000Z	21 \| good	1.839 \| good	7.318 \| good	1.466 \| good	2.159 \| good	22.202 \| good	0.187 \| good
2025-12-09T14:00:00.000Z	22 \| good	3.848 \| good	16.769 \| good	0.891 \| good	2.351 \| good	22.571 \| good	0.195 \| good
2025-12-09T15:00:00.000Z	27 \| good	4.788 \| good	20.708 \| good	1.08 \| good	2.544 \| good	22.94 \| good	0.204 \| good
2025-12-09T16:00:00.000Z	33 \| good	6.042 \| good	26.176 \| good	2.745 \| good	2.899 \| good	22.426 \| good	0.24 \| good
2025-12-09T17:00:00.000Z	27 \| good	4.727 \| good	20.616 \| good	5.395 \| good	3.254 \| good	21.911 \| good	0.276 \| good
2025-12-09T18:00:00.000Z	33 \| good	6.081 \| good	26.46 \| good	13.038 \| good	3.609 \| good	21.397 \| good	0.313 \| good
2025-12-09T19:00:00.000Z	27 \| good	5.346 \| good	23.533 \| good	18.354 \| good	3.846 \| good	20.887 \| good	0.283 \| good
2025-12-09T20:00:00.000Z	27 \| good	4.586 \| good	19.878 \| good	23.178 \| good	4.083 \| good	20.378 \| good	0.253 \| good
2025-12-09T21:00:00.000Z	27 \| good	5.037 \| good	21.858 \| good	27.277 \| good	4.321 \| good	19.868 \| good	0.224 \| good
2025-12-09T22:00:00.000Z	27 \| good	4.195 \| good	18.191 \| good	29.094 \| good	4.135 \| good	21.883 \| good	0.235 \| good

Westmont

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Westmont, California

0.51ppm

How accurate is California, USA air quality data?

The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.

Source: Ambee Data Sources

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Frequently asked questions

How frequently does the air quality data for Westmont, California get updated?

Air quality updates for Westmont, California are available every hour.

What time in the past 24 hours saw the poorest air quality in Westmont, California?

Westmont, California experienced its worst air quality at 09:00:00, 2025-12-07.

When was air quality in Westmont, California the best over the past 24 hours?

The best air quality in Westmont, California was observed at 02:00:00 on 2025-12-07.

What is the air quality in Westmont, California right now?

The air quality in Westmont, California right now is Moderate, with an AQI of 58.

What pollutant is most frequently found in Westmont, California?

In Westmont, California, PM2.5 is the most frequently found pollutant.

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

When air quality in Westmont, California is compromised, staying indoors and wearing a mask can reduce health risks.

What is the PM_2.5 concentration in Westmont, California right now?

Westmont, California currently has a PM_2.5 concentration of 12.845 μg/m³.

What is the current level of PM₁₀ in Westmont, California?

Westmont, California currently has a PM₁₀ concentration of 53.973 μg/m³.

What is the current level of carbon monoxide (CO) in Westmont, California?

The current carbon monoxide (CO) level in Westmont, California is 0.519 ppm.

What is the current level of sulfur dioxide (SO₂) in Westmont, California?

The current sulfur dioxide (SO₂) concentration in Westmont, California is 0.59 ppb.

What is the current level of ozone (O₃) in Westmont, California?

Westmont, California currently has an ozone (O₃) concentration of 30.287 ppm.

What is the current level of nitrogen dioxide (NO₂) in Westmont, California?

The current level of nitrogen dioxide (NO₂) in Westmont, California is 21.287 ppb.

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