CAMS model • Open-Meteo

MaryAir quality, PM2.5 and PM10

Check PM2.5 and PM10 particle levels alongside ozone, nitrogen dioxide and other gases. Compare the latest available concentrations with recent days and explore changes in air pollution through the available historical records.

Mary - latest available concentrations (October 23, 2026, 06:00 local time): PM2.5: 7.3 µg/m³, PM10: 7.7 µg/m³, O₃: 9 µg/m³, NO₂: 22.8 µg/m³, SO₂: 8.6 µg/m³, CO: 232 µg/m³. These are hourly CAMS model values for a point representing the city.

Air quality questions →

Mary · Air pollutant concentrations

Data time: October 23, 2026 · 06:00 · local time
PM2.5

Fine particles

7.3µg/m³Fair · 1 hour
PM10

Particulate matter

7.7µg/m³Good · 1 hour
O₃

Ozone

9µg/m³Good · 1 hour
NO₂

Nitrogen dioxide

22.8µg/m³Fair · 1 hour
SO₂

Sulphur dioxide

8.6µg/m³Good · 1 hour
CO

Carbon monoxide

232µg/m³

PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →

DAILY DATA · Mary

Mary - air pollution over recent days (2026-08-31 - 2026-10-22)

Concentrations of all available pollutants for this city.

PM2.5Lowest 1.33 2026-10-19Highest 7.03 2026-08-312026-08-31 - 2026-10-22
024682026-08-31: 7.03 µg/m³08-312026-09-01: 2.59 µg/m³09-012026-09-02: 1.35 µg/m³09-022026-09-03: 5.06 µg/m³09-032026-09-04: 2.06 µg/m³09-042026-09-05: 1.52 µg/m³09-052026-09-06: 3.53 µg/m³09-062026-09-07: 3.68 µg/m³09-072026-10-16: 1.85 µg/m³10-162026-10-17: 2.45 µg/m³10-172026-10-18: 2.14 µg/m³10-182026-10-19: 1.33 µg/m³10-192026-10-20: 2.81 µg/m³10-202026-10-21: 3.81 µg/m³10-212026-10-22: 3.8 µg/m³10-22µg/m³

Scroll the chart or table sideways to see the full period.

Mary · daily averages · µg/m³
Pollutant2026-10-222026-10-212026-10-202026-10-192026-10-182026-10-172026-10-162026-09-072026-09-062026-09-052026-09-042026-09-032026-09-022026-09-012026-08-31
PM2.53.83.812.811.332.142.451.853.683.531.522.065.061.352.597.03
PM103.8843.031.452.232.471.884.14.051.72.27.722.523.3712.26
O₃46.1752.0858.2954.6754.1755.8362.9676.7572.6370.1370.8870.757477.5871.75
NO₂9.267.868.16.255.988.215.96.187.245.422.72.562.371.771.71
SO₂3.813.553.142.072.723.682.351.852.471.661.151.391.150.91.05
CO169.17159.21169.63146.71143.88167.83158143.67138.29142.21127.33121.04114.13115.71117.67

A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.

How should I interpret the data and averaging period? →

Air quality in nearby cities

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WEATHER & SURROUNDINGS

Mary · weather forecast

Daily maximum and minimum temperatures. Forecast point: 37.5938, 61.8303.

🌦️ WEATHER · 16-DAY FORECASTMary☀️19°Clear skyOct 20 · ↑25° ↓7°💨 16 km/h · 💧 20%Tue20.10☀️25°7°Wed21.10☀️24°8°Thu22.10☀️23°8°Fri23.10☀️24°10°Sat24.10🌤️21°10°Sun25.10☀️20°9°Mon26.10🌤️20°8°Tue27.10☁️22°12°Wed28.10☀️22°11°Thu29.10🌤️24°12°Fri30.10☀️25°12°Sat31.10☀️26°14°Sun1.11☀️25°14°Mon2.11🌤️24°13°Tue3.11☁️25°14°Wed4.11🌧️20°13°pollution-alert.com · 2026-10-20 - 2026-11-04
🌦️ WEATHER · 16-DAY FORECASTMary☀️19°Clear skyOct 20 · ↑25° ↓7°💨 16 km/h · 💧 20%Tue20.10☀️25°7°Wed21.10☀️24°8°Thu22.10☀️23°8°Fri23.10☀️24°10°Sat24.10🌤️21°10°Sun25.10☀️20°9°Mon26.10🌤️20°8°Tue27.10☁️22°12°Wed28.10☀️22°11°Thu29.10🌤️24°12°Fri30.10☀️25°12°Sat31.10☀️26°14°Sun1.11☀️25°14°Mon2.11🌤️24°13°Tue3.11☁️25°14°Wed4.11🌧️20°13°pollution-alert.com · 2026-10-20 - 2026-11-04
🌦️ WEATHER · 16-DAY FORECASTMary☀️19°Clear skyOct 20 · ↑25° ↓7°💨 16 km/h · 💧 20%Tue20.10☀️25°7°Wed21.10☀️24°8°Thu22.10☀️23°8°Fri23.10☀️24°10°Sat24.10🌤️21°10°Sun25.10☀️20°9°Mon26.10🌤️20°8°Tue27.10☁️22°12°Wed28.10☀️22°11°Thu29.10🌤️24°12°Fri30.10☀️25°12°Sat31.10☀️26°14°Sun1.11☀️25°14°Mon2.11🌤️24°13°Tue3.11☁️25°14°Wed4.11🌧️20°13°pollution-alert.com · 2026-10-20 - 2026-11-04

Scroll the forecast to see the following days.

Mary · October 20, 2026: minimum temperature 7°C, maximum 24.6°C. Wind: 15.8 km/h. Humidity: 20%.

Full forecast: temperature, rainfall, wind and humidity
DateDay °CMin °CMax °CNight °CRain mmWind m/sHumidity %Clouds %
2026-10-2019.1724.616.30.24.42075
2026-10-2118.9823.714.71.14.7232
2026-10-2217.5822.813.90.83.6285
2026-10-2320.910.223.51410.74.71567
2026-10-2418.89.920.911.8—5.41612
2026-10-2516.38.920.1110.13.8169
2026-10-2617.17.62011.8—2.91537
2026-10-2718.511.521.813.9—3.21496
2026-10-2819.411.222.514.50.23.4133
2026-10-2920.212.323.614.92.93.91612
2026-10-3020.512.424.616.51.74.4211
2026-10-3122.414.126.416.92.54.4179
2026-11-0121.214.124.715.6—4175
2026-11-0220.512.823.815.9—41629
2026-11-0321.714.325.516.9—41469
2026-11-0419.712.719.712.71.88.41498
2026-11-0513.89.316.810.2—3.85538
2026-11-0613.77.716.610.2—3.737—

UV index by day · Mary

City data.

☀️ UV INDEX · 16-DAY FORECASTMary03681111+4.6UV MODERATEOct 22 · daily maximumSeek shade around midday. SPF 30+, sunglasses and ahat for longer stays.5Thu22.105Fri23.105Sat24.105Sun25.104Mon26.104Tue27.104Wed28.104Thu29.104Fri30.104Sat31.104Sun1.113Mon2.113Tue3.114Wed4.114Thu5.110-2 low3-5 moderate6-7 high8-10 very high11+ extremepollution-alert.com
☀️ UV INDEX · 16-DAY FORECASTMary03681111+4.6UV MODERATEOct 22 · daily maximumSeek shade around midday. SPF 30+, sunglasses and ahat for longer stays.5Thu22.105Fri23.105Sat24.105Sun25.104Mon26.104Tue27.104Wed28.104Thu29.104Fri30.104Sat31.104Sun1.113Mon2.113Tue3.114Wed4.114Thu5.110-2 low3-5 moderate6-7 high8-10 very high11+ extremepollution-alert.com

Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.

☀️ UV INDEX · 16-DAY FORECASTMary03681111+4.6UV MODERATEOct 22 · daily maximumSeek shade around midday. SPF 30+, sunglasses and ahat for longer stays.5Thu22.105Fri23.105Sat24.105Sun25.104Mon26.104Tue27.104Wed28.104Thu29.104Fri30.104Sat31.104Sun1.113Mon2.113Tue3.114Wed4.114Thu5.110-2 low3-5 moderate6-7 high8-10 very high11+ extremepollution-alert.com
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme

Scroll the forecast to see the following days.

Mary · October 22, 2026: UV index: 4.6 .

Indicator2026-10-222026-10-232026-10-242026-10-252026-10-262026-10-272026-10-282026-10-292026-10-302026-10-312026-11-012026-11-022026-11-032026-11-042026-11-052026-11-06
UV index4.64.64.54.54.44.14.14.13.943.63.22.53.73.6—

AIR QUALITY QUESTIONS

Mary · air pollution - questions and answers

What do the latest air quality data show for Mary?

Mary - latest available concentrations (October 23, 2026, 06:00 local time): PM2.5: 7.3 µg/m³, PM10: 7.7 µg/m³, O₃: 9 µg/m³, NO₂: 22.8 µg/m³, SO₂: 8.6 µg/m³, CO: 232 µg/m³. These are hourly CAMS model values for a point representing the city.

When was PM2.5 highest in Mary over the past week?

The highest available daily mean PM2.5 was 3.8 µg/m³ (October 21, 2026). This comparison covers 7 days with data in the seven days before October 23, 2026. The day of the latest reading is excluded because it may be incomplete.

Is the PM2.5 concentration for Mary 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 Mary?

For October 22, 2026, the forecast UV index is 4.6. The UV section also shows the following available days.

What wind speed is forecast for Mary?

For October 20, 2026, forecast wind speed is 15.8 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.