What is the current level of PM10 in Alton, Illinois?

Alton, Illinois currently has a PM10 concentration of 42.871 μg/m3.

What is the current level of sulfur dioxide (SO2) in Alton, Illinois?

The current sulfur dioxide (SO2) concentration in Alton, Illinois is 0.896 ppb.

What is the current level of ozone (O3) in Alton, Illinois?

Alton, Illinois currently has an ozone (O3) concentration of 32.115 ppm.

What is the current level of nitrogen dioxide (NO2) in Alton, Illinois?

The current level of nitrogen dioxide (NO2) in Alton, Illinois is 3.608 ppb.

Current air quality index in Alton, Illinois today

Q: What is the PM2.5 concentration in Alton, Illinois right now?

Alton, Illinois currently has a PM2.5 concentration of 9.544 μg/m3.

Stay updated with real-time air quality in Alton, Illinois 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

Alton, Illinois

Last updated: ... (Local time)

Common air pollutants in Alton, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

9.54 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

42.87 μg/m³

155

255

425

605+

Ozone (O₃)

32.12 ppb

201

201+

Sulfur Dioxide (SO₂)

0.90 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.61 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.20 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

Please contact us for custom requests

Alton, Illinois

Scroll To Air Quality Map

Track live Alton, Illinois air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-07T21:00:00.000Z	16 \| good	3.3 \| good	15 \| good	17 \| good	0.219 \| good	3.069 \| good	0.149 \| good
2026-03-07T22:00:00.000Z	22 \| good	3.7 \| good	16 \| good	16 \| good	0.239 \| good	3.188 \| good	0.149 \| good
2026-03-07T23:00:00.000Z	22 \| good	3.6 \| good	16 \| good	11 \| good	0.181 \| good	3.576 \| good	0.147 \| good
2026-03-08T00:00:00.000Z	16 \| good	3.4 \| good	15 \| good	13 \| good	0.212 \| good	3.815 \| good	0.147 \| good
2026-03-08T01:00:00.000Z	16 \| good	3.4 \| good	15 \| good	16 \| good	0.201 \| good	3.465 \| good	0.149 \| good
2026-03-08T02:00:00.000Z	22 \| good	3.7 \| good	16 \| good	15 \| good	0.257 \| good	3.307 \| good	0.147 \| good
2026-03-08T03:00:00.000Z	54 \| moderate	11.433 \| good	50.98 \| good	20.98 \| good	0.458 \| good	6.127 \| good	0.206 \| good
2026-03-08T04:00:00.000Z	22 \| good	4.1 \| good	18 \| good	20 \| good	0.245 \| good	3.556 \| good	0.107 \| good
2026-03-08T05:00:00.000Z	27 \| good	5.1 \| good	22 \| good	20 \| good	0.356 \| good	4.116 \| good	0.104 \| good
2026-03-08T06:00:00.000Z	33 \| good	6.2 \| good	28 \| good	20 \| good	0.205 \| good	9.588 \| good	0.169 \| good
2026-03-08T07:00:00.000Z	33 \| good	6.2 \| good	28 \| good	21 \| good	0.168 \| good	7.993 \| good	0.143 \| good
2026-03-08T08:00:00.000Z	38 \| good	6.8 \| good	30 \| good	18 \| good	0.262 \| good	8.738 \| good	0.142 \| good
2026-03-08T09:00:00.000Z	33 \| good	5.9 \| good	27 \| good	19 \| good	0.152 \| good	13.45 \| good	0.142 \| good
2026-03-08T10:00:00.000Z	33 \| good	5.5 \| good	24 \| good	17 \| good	0.29 \| good	6.437 \| good	0.142 \| good
2026-03-08T11:00:00.000Z	33 \| good	5.5 \| good	24 \| good	12 \| good	0.356 \| good	1.609 \| good	0.142 \| good
2026-03-08T12:00:00.000Z	38 \| good	6.6 \| good	30 \| good	9 \| good	0.422 \| good	2.455 \| good	0.142 \| good
2026-03-08T13:00:00.000Z	38 \| good	6.6 \| good	30 \| good	9 \| good	0.456 \| good	2.203 \| good	0.143 \| good
2026-03-08T14:00:00.000Z	38 \| good	6.5 \| good	29 \| good	4 \| good	0.542 \| good	3.581 \| good	0.142 \| good
2026-03-08T15:00:00.000Z	38 \| good	6.5 \| good	29 \| good	8 \| good	0.291 \| good	2.098 \| good	0.142 \| good
2026-03-08T16:00:00.000Z	38 \| good	6.7 \| good	30 \| good	11 \| good	0.391 \| good	1.969 \| good	0.174 \| good
2026-03-08T17:00:00.000Z	38 \| good	6.8 \| good	30 \| good	16 \| good	0.41 \| good	2.136 \| good	0.157 \| good
2026-03-08T18:00:00.000Z	33 \| good	6.4 \| good	29 \| good	19 \| good	0.289 \| good	2.809 \| good	0.142 \| good
2026-03-08T19:00:00.000Z	33 \| good	5.9 \| good	27 \| good	33 \| good	0.251 \| good	1.744 \| good	0.174 \| good
2026-03-08T20:00:00.000Z	31 \| good	5 \| good	22 \| good	33 \| good	0.375 \| good	3.023 \| good	0.189 \| good
2026-03-08T21:00:00.000Z	31 \| good	4.6 \| good	20 \| good	34 \| good	0.428 \| good	1.861 \| good	0.189 \| good
2026-03-08T22:00:00.000Z	34 \| good	4.4 \| good	19 \| good	37 \| good	0.308 \| good	3.941 \| good	0.173 \| good
2026-03-08T23:00:00.000Z	32 \| good	3.9 \| good	17 \| good	35 \| good	0.294 \| good	5.25 \| good	0.189 \| good
2026-03-09T00:00:00.000Z	30 \| good	3.9 \| good	17 \| good	32 \| good	0.256 \| good	7.332 \| good	0.204 \| good
2026-03-09T01:00:00.000Z	29 \| good	3.6 \| good	16 \| good	31 \| good	0.313 \| good	9.157 \| good	0.205 \| good
2026-03-09T02:00:00.000Z	26 \| good	3.6 \| good	16 \| good	28 \| good	0.318 \| good	18.161 \| good	0.237 \| good
2026-03-09T03:00:00.000Z	38 \| good	7.238 \| good	31.985 \| good	18.407 \| good	0.868 \| good	8.752 \| good	0.215 \| good
2026-03-09T04:00:00.000Z	23 \| good	3.7 \| good	16 \| good	25 \| good	0.311 \| good	15.622 \| good	0.296 \| good
2026-03-09T05:00:00.000Z	27 \| good	5.4 \| good	23 \| good	26 \| good	0.269 \| good	11.538 \| good	0.237 \| good
2026-03-09T06:00:00.000Z	27 \| good	5.3 \| good	23 \| good	22 \| good	0.194 \| good	5.171 \| good	0.221 \| good
2026-03-09T07:00:00.000Z	27 \| good	5.3 \| good	23 \| good	24 \| good	0.194 \| good	4.393 \| good	0.174 \| good
2026-03-09T08:00:00.000Z	44 \| good	7.5 \| good	33 \| good	20 \| good	0.463 \| good	3.965 \| good	0.205 \| good
2026-03-09T09:00:00.000Z	38 \| good	7 \| good	31 \| good	20 \| good	0.29 \| good	6.517 \| good	0.189 \| good
2026-03-09T10:00:00.000Z	33 \| good	5.6 \| good	24 \| good	21 \| good	0.213 \| good	4.786 \| good	0.232 \| good
2026-03-09T11:00:00.000Z	27 \| good	5.3 \| good	23 \| good	20 \| good	0.218 \| good	5.847 \| good	0.252 \| good
2026-03-09T12:00:00.000Z	33 \| good	6.1 \| good	27 \| good	19 \| good	0.392 \| good	6.829 \| good	0.237 \| good
2026-03-09T13:00:00.000Z	33 \| good	6.1 \| good	27 \| good	19 \| good	0.391 \| good	7.413 \| good	0.19 \| good
2026-03-09T14:00:00.000Z	38 \| good	7.1 \| good	32 \| good	18 \| good	0.52 \| good	12.95 \| good	0.285 \| good
2026-03-09T15:00:00.000Z	38 \| good	6.6 \| good	30 \| good	17 \| good	0.517 \| good	8.26 \| good	0.238 \| good
2026-03-09T16:00:00.000Z	44 \| good	7.7 \| good	34 \| good	17 \| good	0.581 \| good	5.61 \| good	0.191 \| good
2026-03-09T17:00:00.000Z	44 \| good	7.7 \| good	34 \| good	17 \| good	0.702 \| good	5.244 \| good	0.187 \| good
2026-03-09T18:00:00.000Z	44 \| good	8.2 \| good	36 \| good	19 \| good	1.308 \| good	4.624 \| good	0.187 \| good
2026-03-09T19:00:00.000Z	49 \| good	9 \| good	41 \| good	27 \| good	0.854 \| good	4.186 \| good	0.191 \| good
2026-03-09T20:00:00.000Z	52 \| moderate	9.6 \| good	43 \| good	27 \| good	0.881 \| good	4.178 \| good	0.193 \| good
2026-03-09T20:00:00.000Z	52 \| moderate	9.544 \| good	42.871 \| good	32.115 \| good	0.896 \| good	3.608 \| good	0.199 \| good
2026-03-09T21:00:00.000Z	30 \| good	4.698 \| good	20.07 \| good	31.552 \| good	0.717 \| good	1.342 \| good	0.145 \| good
2026-03-09T22:00:00.000Z	33 \| good	6.045 \| good	26.942 \| good	27.473 \| good	0.691 \| good	2.439 \| good	0.149 \| good
2026-03-09T23:00:00.000Z	44 \| good	7.922 \| good	34.993 \| good	30.791 \| good	0.664 \| good	3.536 \| good	0.152 \| good
2026-03-10T00:00:00.000Z	38 \| good	6.659 \| good	30 \| good	26.252 \| good	0.638 \| good	4.633 \| good	0.156 \| good
2026-03-10T01:00:00.000Z	38 \| good	6.66 \| good	29.955 \| good	24.937 \| good	0.636 \| good	4.513 \| good	0.154 \| good
2026-03-10T02:00:00.000Z	49 \| good	8.804 \| good	38.978 \| good	22.05 \| good	0.634 \| good	4.394 \| good	0.152 \| good
2026-03-10T03:00:00.000Z	49 \| good	9.281 \| good	41.047 \| good	20.31 \| good	0.632 \| good	4.274 \| good	0.15 \| good
2026-03-10T04:00:00.000Z	52 \| moderate	9.555 \| good	42.932 \| good	20.146 \| good	0.609 \| good	3.942 \| good	0.145 \| good
2026-03-10T05:00:00.000Z	54 \| moderate	10.714 \| good	47.902 \| good	18.342 \| good	0.586 \| good	3.609 \| good	0.14 \| good
2026-03-10T06:00:00.000Z	49 \| good	9.176 \| good	40.934 \| good	15.124 \| good	0.562 \| good	3.277 \| good	0.135 \| good
2026-03-10T07:00:00.000Z	49 \| good	8.55 \| good	37.042 \| good	19.638 \| good	0.544 \| good	3.043 \| good	0.131 \| good
2026-03-10T08:00:00.000Z	44 \| good	7.869 \| good	34.034 \| good	17.748 \| good	0.526 \| good	2.809 \| good	0.126 \| good
2026-03-10T09:00:00.000Z	38 \| good	6.593 \| good	29.019 \| good	12.958 \| good	0.509 \| good	2.575 \| good	0.122 \| good
2026-03-10T10:00:00.000Z	38 \| good	6.943 \| good	30.989 \| good	15.462 \| good	0.53 \| good	2.753 \| good	0.122 \| good
2026-03-10T11:00:00.000Z	38 \| good	7.473 \| good	32.989 \| good	12.078 \| good	0.551 \| good	2.93 \| good	0.122 \| good
2026-03-10T12:00:00.000Z	49 \| good	9.305 \| good	41.908 \| good	6.727 \| good	0.572 \| good	3.108 \| good	0.123 \| good
2026-03-10T13:00:00.000Z	52 \| moderate	9.562 \| good	42.958 \| good	9.223 \| good	0.635 \| good	3.234 \| good	0.128 \| good
2026-03-10T14:00:00.000Z	49 \| good	8.793 \| good	38.104 \| good	16.286 \| good	0.698 \| good	3.361 \| good	0.134 \| good
2026-03-10T15:00:00.000Z	49 \| good	9.159 \| good	40.993 \| good	22.349 \| good	0.761 \| good	3.487 \| good	0.14 \| good
2026-03-10T16:00:00.000Z	49 \| good	8.557 \| good	37.033 \| good	29.63 \| good	0.712 \| good	3.055 \| good	0.137 \| good
2026-03-10T17:00:00.000Z	44 \| good	7.549 \| good	33.011 \| good	30.514 \| good	0.663 \| good	2.622 \| good	0.134 \| good
2026-03-10T18:00:00.000Z	44 \| good	8.021 \| good	35.005 \| good	27.266 \| good	0.614 \| good	2.189 \| good	0.131 \| good
2026-03-10T19:00:00.000Z	38 \| good	7.354 \| good	32.045 \| good	27.544 \| good	0.6 \| good	1.916 \| good	0.13 \| good
2026-03-10T20:00:00.000Z	38 \| good	7.094 \| good	31.061 \| good	24.61 \| good	0.587 \| good	1.642 \| good	0.128 \| good
2026-03-10T21:00:00.000Z	38 \| good	7.104 \| good	31.956 \| good	18.769 \| good	0.573 \| good	1.368 \| good	0.127 \| good
2026-03-10T22:00:00.000Z	38 \| good	6.738 \| good	29.976 \| good	18.455 \| good	0.589 \| good	2.274 \| good	0.132 \| good
2026-03-10T23:00:00.000Z	44 \| good	8.17 \| good	36.043 \| good	18.605 \| good	0.604 \| good	3.181 \| good	0.137 \| good
2026-03-11T00:00:00.000Z	38 \| good	7.295 \| good	32.002 \| good	15.993 \| good	0.619 \| good	4.087 \| good	0.142 \| good
2026-03-11T01:00:00.000Z	38 \| good	6.931 \| good	30.978 \| good	16.021 \| good	0.599 \| good	3.745 \| good	0.138 \| good
2026-03-11T02:00:00.000Z	54 \| moderate	10.772 \| good	47.971 \| good	21.398 \| good	0.579 \| good	3.404 \| good	0.134 \| good
2026-03-11T03:00:00.000Z	54 \| moderate	10.73 \| good	47.933 \| good	19.675 \| good	0.559 \| good	3.063 \| good	0.129 \| good
2026-03-11T04:00:00.000Z	52 \| moderate	10.17 \| good	44.996 \| good	17.564 \| good	0.547 \| good	2.795 \| good	0.125 \| good
2026-03-11T05:00:00.000Z	52 \| moderate	9.897 \| good	44.012 \| good	18.688 \| good	0.535 \| good	2.528 \| good	0.121 \| good
2026-03-11T06:00:00.000Z	52 \| moderate	9.895 \| good	10.053 \| good	32.468 \| good	0.527 \| good	2.274 \| good	0.117 \| good
2026-03-11T07:00:00.000Z	44 \| good	8.215 \| good	36.009 \| good	20.865 \| good	0.52 \| good	2.117 \| good	0.116 \| good
2026-03-11T08:00:00.000Z	27 \| good	4.802 \| good	20.992 \| good	17.353 \| good	0.516 \| good	1.974 \| good	0.114 \| good
2026-03-11T09:00:00.000Z	16 \| good	3.277 \| good	14.076 \| good	14.551 \| good	0.513 \| good	1.831 \| good	0.112 \| good
2026-03-11T10:00:00.000Z	27 \| good	4.803 \| good	21 \| good	21.874 \| good	0.474 \| good	1.787 \| good	0.112 \| good
2026-03-11T11:00:00.000Z	22 \| good	3.72 \| good	16 \| good	20.897 \| good	0.434 \| good	1.743 \| good	0.112 \| good
2026-03-11T12:00:00.000Z	28 \| good	5.128 \| good	5.239 \| good	29.95 \| good	0.398 \| good	1.707 \| good	0.113 \| good
2026-03-11T13:00:00.000Z	27 \| good	4.796 \| good	4.9 \| good	28.416 \| good	0.44 \| good	2.37 \| good	0.118 \| good
2026-03-11T14:00:00.000Z	27 \| good	4.664 \| good	4.796 \| good	26.882 \| good	0.481 \| good	3.033 \| good	0.124 \| good
2026-03-11T15:00:00.000Z	23 \| good	4.344 \| good	4.488 \| good	25.348 \| good	0.523 \| good	3.695 \| good	0.129 \| good
2026-03-11T16:00:00.000Z	22 \| good	3.757 \| good	3.842 \| good	23.946 \| good	0.466 \| good	3.418 \| good	0.147 \| good
2026-03-11T17:00:00.000Z	33 \| good	6.133 \| good	26.995 \| good	19.144 \| good	0.408 \| good	3.133 \| good	0.166 \| good
2026-03-11T18:00:00.000Z	19 \| good	0.849 \| good	0.853 \| good	21.142 \| good	0.352 \| good	2.862 \| good	0.184 \| good
2026-03-11T19:00:00.000Z	21 \| good	0.923 \| good	0.893 \| good	22.926 \| good	0.354 \| good	2.673 \| good	0.179 \| good
2026-03-11T20:00:00.000Z	23 \| good	1.03 \| good	0.993 \| good	24.71 \| good	0.357 \| good	2.484 \| good	0.174 \| good

Alton

Empower business decisions with accurate air quality data

Real-time air quality map: Monitor AQI near Alton, Illinois

0.14ppm

How accurate is Illinois, USA air quality data?

The air quality data for Illinois, 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

Air quality levels in US

Check live rankings of places in the USA affected by air pollution.

View Polluted Cities

Check live rankings of places in the USA with the cleanest air.

View Clean Cities

Frequently asked questions

How frequently does the air quality data for Alton, Illinois get updated?

Air quality updates for Alton, Illinois are available every hour.

What time in the past 24 hours saw the poorest air quality in Alton, Illinois?

Alton, Illinois experienced its worst air quality at 07:00:00, 2026-03-09.

When was air quality in Alton, Illinois the best over the past 24 hours?

The best air quality in Alton, Illinois was observed at 04:00:00 on 2026-03-09.

What is the air quality in Alton, Illinois right now?

The air quality in Alton, Illinois right now is Moderate, with an AQI of 52.

What pollutant is most frequently found in Alton, Illinois?

In Alton, Illinois, PM2.5 is the most frequently found pollutant.

What can I do if the air quality in Alton, Illinois is poor?

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

What is the PM_2.5 concentration in Alton, Illinois right now?

Alton, Illinois currently has a PM_2.5 concentration of 9.544 μg/m³.

What is the current level of PM₁₀ in Alton, Illinois?

Alton, Illinois currently has a PM₁₀ concentration of 42.871 μg/m³.

What is the current level of carbon monoxide (CO) in Alton, Illinois?

The current carbon monoxide (CO) level in Alton, Illinois is 0.199 ppm.

What is the current level of sulfur dioxide (SO₂) in Alton, Illinois?

The current sulfur dioxide (SO₂) concentration in Alton, Illinois is 0.896 ppb.

What is the current level of ozone (O₃) in Alton, Illinois?

Alton, Illinois currently has an ozone (O₃) concentration of 32.115 ppm.

What is the current level of nitrogen dioxide (NO₂) in Alton, Illinois?

The current level of nitrogen dioxide (NO₂) in Alton, Illinois is 3.608 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions