Fine particles
13.7µg/m³CAMS model • Open-Meteo
United StatesAir quality, PM2.5 and PM10
Compare air quality across cities in this country. Explore PM2.5, PM10 and other pollutant concentrations, check data timestamps, and view recent trends and historical charts.
United States - average concentrations across available points: PM2.5: 13.7 µg/m³, PM10: 14.7 µg/m³, O₃: 56.6 µg/m³, NO₂: 30.7 µg/m³, SO₂: 2.6 µg/m³, CO: 254.3 µg/m³. Date range: October 22, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
Lowest PM2.5: San Jose (5.4 µg/m³). Highest PM2.5: Chicago (51 µg/m³). This comparison covers 20 cities on October 22, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
Air quality questions →
8 weather warnings in effect for United States
All cities · United States
20 citiesUnited States↗
New York City
PM2.512.2
PM1012.3
µg/m³
PM2.5 · FairNO₂ 58.5O₃ 14
October 22, 202621:00
United States↗
Los Angeles
PM2.56.9
PM108.9
µg/m³
PM2.5 · FairNO₂ 23O₃ 54
October 22, 202618:00
United States↗
Chicago
PM2.551
PM1051
µg/m³
PM2.5 · PoorNO₂ 86.4O₃ 19
October 22, 202620:00
United States↗
Houston
PM2.532.9
PM1033.2
µg/m³
PM2.5 · ModerateNO₂ 39.5O₃ 82
October 22, 202620:00
United States↗
Philadelphia
PM2.57.6
PM107.6
µg/m³
PM2.5 · FairNO₂ 28.8O₃ 43
October 22, 202621:00
United States↗
Phoenix
PM2.57.7
PM1012.1
µg/m³
PM2.5 · FairNO₂ 13.8O₃ 50
October 22, 202618:00
United States↗
Bronx
PM2.512.2
PM1012.3
µg/m³
PM2.5 · FairNO₂ 58.5O₃ 14
October 22, 202621:00
United States↗
San Antonio
PM2.512.8
PM1014.1
µg/m³
PM2.5 · FairNO₂ 13.8O₃ 98
October 22, 202620:00
United States↗
Dallas
PM2.512
PM1012.1
µg/m³
PM2.5 · FairNO₂ 35.9O₃ 72
October 22, 202620:00
United States↗
San Jose
PM2.55.4
PM107.2
µg/m³
PM2.5 · FairNO₂ 6.9O₃ 68
October 22, 202618:00
United States↗
Indianapolis
PM2.512
PM1012
µg/m³
PM2.5 · FairNO₂ 30.8O₃ 46
October 22, 202621:00
United States↗
Jacksonville
PM2.56.1
PM108
µg/m³
PM2.5 · FairNO₂ 9.5O₃ 88
October 22, 202621:00
United States↗
San Francisco
PM2.511.7
PM1018.3
µg/m³
PM2.5 · FairNO₂ 5.6O₃ 79
October 22, 202618:00
United States↗
Austin
PM2.512.5
PM1013
µg/m³
PM2.5 · FairNO₂ 11.4O₃ 91
October 22, 202620:00
United States↗
Columbus
PM2.510.9
PM1010.9
µg/m³
PM2.5 · FairNO₂ 21.4O₃ 48
October 22, 202621:00
United States↗
Fort Worth
PM2.513.4
PM1013.4
µg/m³
PM2.5 · FairNO₂ 31.7O₃ 86
October 22, 202620:00
United States↗
Charlotte
PM2.515.4
PM1015.5
µg/m³
PM2.5 · ModerateNO₂ 30.5O₃ 48
October 22, 202621:00
United States↗
Detroit
PM2.517.2
PM1017.2
µg/m³
PM2.5 · ModerateNO₂ 67.5O₃ 12
October 22, 202621:00
United States↗
Memphis
PM2.58.4
PM108.4
µg/m³
PM2.5 · FairNO₂ 14.3O₃ 82
October 22, 202620:00
United States↗
Baltimore
PM2.55.8
PM105.8
µg/m³
PM2.5 · FairNO₂ 26.7O₃ 38
October 22, 202621:00
PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
AVERAGE ACROSS AVAILABLE COUNTRY POINTS
Latest concentrations · United States
Particulate matter
14.7µg/m³Ozone
56.6µg/m³Nitrogen dioxide
30.7µg/m³Sulphur dioxide
2.6µg/m³Carbon monoxide
254.3µg/m³Average of the latest available hour at each model point. This is neither a population-weighted nor a daily average.
DAILY DATA · United States
United States - air pollution over recent days (2026-08-30 - 2026-10-21)
Averages across available points in the country. These are not population-weighted averages.
PM2.5Lowest 6.02 2026-10-17Highest 12.95 2026-09-012026-08-30 - 2026-10-21
PM10Lowest 9.4 2026-10-17Highest 15.46 2026-09-012026-08-30 - 2026-10-21
O₃Lowest 53.01 2026-10-18Highest 78.51 2026-08-312026-08-30 - 2026-10-21
NO₂Lowest 11.06 2026-10-17Highest 23.91 2026-10-192026-08-30 - 2026-10-21
SO₂Lowest 1.13 2026-10-17Highest 2.79 2026-10-202026-08-30 - 2026-10-21
COLowest 150.16 2026-10-17Highest 232.15 2026-10-192026-08-30 - 2026-10-21
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-10-21 | 2026-10-20 | 2026-10-19 | 2026-10-18 | 2026-10-17 | 2026-10-16 | 2026-10-15 | 2026-09-06 | 2026-09-05 | 2026-09-04 | 2026-09-03 | 2026-09-02 | 2026-09-01 | 2026-08-31 | 2026-08-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 10.02 | 10.99 | 12.63 | 8.91 | 6.02 | 8.15 | 9.41 | 10.52 | 11.07 | 11.22 | 10.8 | 11.38 | 12.95 | 11.47 | 10.33 |
| PM10 | 11.03 | 12.96 | 14.03 | 10.11 | 9.4 | 11.38 | 11.42 | 13.22 | 14.08 | 14.8 | 13.49 | 14.19 | 15.46 | 13.72 | 12.64 |
| O₃ | 56.44 | 57.84 | 53.74 | 53.01 | 57.73 | 59.16 | 60.45 | 65.13 | 67.03 | 69.81 | 72.27 | 73.56 | 78.21 | 78.51 | 73.56 |
| NO₂ | 22.31 | 22.67 | 23.91 | 17.08 | 11.06 | 12.68 | 15.59 | 12.26 | 13.09 | 13.94 | 13.1 | 12.96 | 13.67 | 12.1 | 12.68 |
| SO₂ | 2.68 | 2.79 | 2.72 | 1.82 | 1.13 | 1.19 | 1.67 | 1.73 | 1.82 | 1.99 | 1.99 | 2.06 | 2.08 | 2 | 1.81 |
| CO | 223 | 227.46 | 232.15 | 174.07 | 150.16 | 164.69 | 181.26 | 154.45 | 161.19 | 170.3 | 165.08 | 162.7 | 170.4 | 166.8 | 162.41 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · United States
United States - air pollution history (2015-10 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM2.5Lowest 4.49 2020-05Highest 12.9 2016-012015-10 - 2020-05
PM10Lowest 10.6 2019-02Highest 24.9 2018-082015-10 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 | 2016-11 | 2016-10 | 2016-09 | 2016-08 | 2016-07 | 2016-06 | 2016-05 | 2016-04 | 2016-03 | 2016-02 | 2016-01 | 2015-12 | 2015-11 | 2015-10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 4.49 | 5.13 | 5.62 | 5.94 | 5.92 | 6.98 | 7.2 | 5.42 | 5.79 | 6.37 | 6.94 | 5.69 | 5.42 | 5.14 | 6.45 | 6.49 | 6.64 | 6.61 | 6.35 | 5.64 | 5.65 | 10.6 | 7.93 | 6.29 | 6.3 | 5.62 | 5.3 | 6.1 | 7.28 | 7.71 | 7.15 | 6.07 | 8.25 | 8.35 | 7.52 | 6.27 | 5.8 | 5.45 | 6.21 | 6.8 | 6.89 | 6.58 | 7.34 | 6.21 | 6.19 | 6.78 | 6.99 | 6.61 | 6.03 | 6.2 | 6.1 | 11.1 | 12.9 | 10.4 | 11.3 | 11.3 |
| PM10 | 14.8 | 13.6 | 11.8 | 12.8 | 11.8 | 12.1 | 16.1 | 15.7 | 17 | 17 | 18.9 | 17.2 | 14.6 | 14.2 | 13.3 | 10.6 | 12 | 12.4 | 13.8 | 13.8 | 18.1 | 24.9 | 20.6 | 18.9 | 16.8 | 15 | 12.3 | 12.5 | 14 | 15.5 | 16 | 18 | 22.4 | 19.5 | 21.6 | 18.6 | 17.3 | 14.3 | 14.9 | 14.2 | 12.1 | 13.4 | 17.1 | 16.2 | 16.9 | 19 | 18.6 | 18.3 | 15.2 | 15.7 | 15.7 | 20.8 | 18.7 | 20.7 | 17.3 | 12.6 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
Environment and quality of life ratings · United States
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | United States | Canada | The Bahamas | Venezuela | Belize | Cuba |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 70% | 77% | 50% | 41% | 52% | 53% |
| Pleasure of spending time in the city | 75% | 79% | 53% | 41% | 60% | 44% |
| Air Pollution | 29% | 24% | 52% | 59% | 43% | 62% |
| Garbage Disposal | 71% | 74% | 29% | 18% | 30% | 30% |
| Availability and quality of drinking water | 71% | 82% | 55% | 28% | 62% | 44% |
| Cleanliness and tidiness | 60% | 66% | 35% | 22% | 38% | 35% |
| Noise and Light pollution | 47% | 42% | 39% | 47% | 45% | 47% |
| Water Pollution | 44% | 35% | 58% | 76% | 64% | 61% |
WEATHER & SURROUNDINGS
United States · weather forecast
Daily maximum and minimum temperatures. Forecast point: 38.0902, -94.7129.
Scroll the forecast to see the following days.
United States · October 20, 2026: minimum temperature 8.5°C, maximum 22°C. Wind: 10.9 km/h. Humidity: 56%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-10-20 | 21 | 8.5 | 22 | 13.4 | 0.4 | 3 | 56 | 40 |
| 2026-10-21 | 23.1 | 11.1 | 24.2 | 14.9 | 0.8 | 3.7 | 53 | 5 |
| 2026-10-22 | 24.1 | 11.1 | 24.4 | 14.7 | 8.3 | 2.3 | 43 | 17 |
| 2026-10-23 | 23.3 | 11.7 | 24.2 | 16.8 | 1.3 | 4.3 | 45 | 92 |
| 2026-10-24 | 23.4 | 13.6 | 24.6 | 16.2 | 0.2 | 4.1 | 44 | 55 |
| 2026-10-25 | 23.6 | 12.5 | 24.8 | 17.4 | 1.1 | 2.8 | 42 | 63 |
| 2026-10-26 | 22.8 | 13.6 | 23.3 | 15.8 | 2.2 | 3.5 | 39 | 2 |
| 2026-10-27 | 15.9 | 8.6 | 17.5 | 8.6 | 8.9 | 5.5 | 62 | 100 |
| 2026-10-28 | 7.6 | 3.8 | 7.6 | 3.8 | 2.2 | 6.5 | 72 | 100 |
| 2026-10-29 | 11.4 | 1.4 | 13.6 | 6.4 | 2.2 | 3 | 44 | 4 |
| 2026-10-30 | 16.3 | 4.6 | 17.8 | 13.3 | 1.1 | 8.2 | 39 | 85 |
| 2026-10-31 | 13.7 | 11 | 15.8 | 11.4 | 7.3 | 10.4 | 71 | 100 |
| 2026-11-01 | 14.6 | 12 | 15.3 | 14.2 | 4.3 | 7.9 | 92 | 100 |
| 2026-11-02 | 14.6 | 7.2 | 15.6 | 8.3 | 3.9 | 5.7 | 35 | 50 |
| 2026-11-03 | 16.2 | 5.7 | 16.7 | 11.4 | — | 6.6 | 32 | 40 |
| 2026-11-04 | 13.9 | 11.7 | 14.6 | 14.6 | 0.1 | 8.8 | 81 | 100 |
| 2026-11-05 | 17 | 8.8 | 17 | 8.8 | 0.1 | 8.7 | 33 | 73 |
UV index by day · United States
Data for a country reference point. Local conditions may differ.
Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
United States · October 22, 2026: UV index: 4.8 .
| Indicator | 2026-10-22 | 2026-10-23 | 2026-10-24 | 2026-10-25 | 2026-10-26 | 2026-10-27 | 2026-10-28 | 2026-10-29 | 2026-10-30 | 2026-10-31 | 2026-11-01 | 2026-11-02 | 2026-11-03 | 2026-11-04 | 2026-11-05 | 2026-11-06 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 4.8 | 4.5 | 3.4 | 4.2 | 3.6 | 2.1 | 3.7 | 2.8 | 2.8 | 3.6 | 0.3 | 0.8 | 0.5 | 0.3 | 2.8 | — |
AIR QUALITY QUESTIONS
United States · air pollution - questions and answers
What do the latest air quality data show for United States?
United States - average concentrations across available points: PM2.5: 13.7 µg/m³, PM10: 14.7 µg/m³, O₃: 56.6 µg/m³, NO₂: 30.7 µg/m³, SO₂: 2.6 µg/m³, CO: 254.3 µg/m³. Date range: October 22, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
When was PM2.5 highest in United States over the past week?
The highest available daily mean PM2.5 was 12.6 µg/m³ (October 19, 2026). This comparison covers 7 days with data in the seven days before October 22, 2026. The day of the latest reading is excluded because it may be incomplete.
Which cities in United States have the cleanest and most polluted air by PM2.5?
Lowest PM2.5: San Jose (5.4 µg/m³). Highest PM2.5: Chicago (51 µg/m³). This comparison covers 20 cities on October 22, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
What period does the pollution history for United States cover?
Available monthly means cover 2015-10 - 2020-05. The tables include PM2.5, PM10. Missing values are marked with a dash, not treated as zero. Monthly archives and current model data may come from different sources.
Is the PM2.5 concentration for United States an AQI score?
No. PM2.5 and PM10 are concentrations in µg/m³. AQI is a separate index calculated using a defined scale. When comparing air quality, also check other pollutants, the date and the averaging period.
What UV index does the available forecast show for United States?
For October 22, 2026, the forecast UV index is 4.8. The UV section also shows the following available days.
What wind speed is forecast for United States?
For October 20, 2026, forecast wind speed is 10.9 km/h. The weather table includes wind, temperature and other available parameters for subsequent days.
PM2.5 · PM10 · NO₂ · O₃
Understanding air quality and pollution data
What do PM2.5 and PM10 mean?
PM2.5 and PM10 are fractions of airborne particulate matter. PM2.5 covers fine particles up to 2.5 micrometres in diameter, while PM10 covers particles up to 10 micrometres. Concentrations in µg/m³ tell you how many micrograms of particles are present in a cubic metre of air. Compare values over the same time period.
Where does the air pollution data come from?
The latest concentrations come from the CAMS atmospheric model via Open-Meteo for each city’s coordinates. Values describe a model area, so conditions on individual streets may differ. Historical monitoring station data is shown separately where available.
How does PM2.5 concentration differ from AQI?
PM2.5 is the concentration of one particle fraction, expressed in µg/m³. AQI is an index calculated using a particular scale and thresholds. The pollutant cards show concentrations. Our city ranking compares PM2.5; PM10, ozone, nitrogen dioxide and other available gases add to the picture of air quality.
Which dates do the values and charts cover?
Each current value has a data date and time. Current concentration cards show the latest available hour, daily charts summarise individual days, and monthly records let you compare longer periods. These values represent different time intervals.
How can I check pollution in my city?
Search for your city and open its air quality page. Start with PM2.5 and PM10, then check the other available pollutants and the data timestamp. Charts and tables help you compare concentrations over time. Weather and historical climate information complement the pollution data.