ID: 1373

AQSQID: 080350004

Site Name: Chatfield Park - 11500 N. Roxborough Park Rd.

Added: April 21, 2020, 6:24 p.m.

Updated: May 26, 2022, 7:19 a.m.

Location: Littleton (Roxborough Park Rd), CO

Reporting: True, Located: True

Current AQI: 34.0

Littleton (Roxborough Park Rd) CO, US: 39.5339, -105.07

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 26, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 4.3 μg/m3 (18) 34.0
 
May 26, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 3.9 μg/m3 (17) 39.0
 
May 26, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
May 26, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 3.7 μg/m3 (16) 40.0
 
May 26, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 3.7 μg/m3 (16) 55.0
 
May 26, 2022, midnight N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 3.4 μg/m3 (15) 68.0
 
May 25, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 3.6 μg/m3 (16) 71.0
 
May 25, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 3.6 μg/m3 (16) 71.0
 
May 25, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 3.6 μg/m3 (16) 71.0
 
May 25, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 3.7 μg/m3 (16) 68.0
 
May 25, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 3.5 μg/m3 (15) 65.0
 
May 25, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 3.5 μg/m3 (15) 65.0
 
May 25, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 4.0 μg/m3 (17) 58.0
 
May 25, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 4.0 μg/m3 (17) 58.0
 
May 25, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 3.4 μg/m3 (15) 58.0
 
May 25, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 3.4 μg/m3 (15) 58.0
 
May 25, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 3.4 μg/m3 (15) 50.0
 
May 25, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 3.4 μg/m3 (15) 50.0
 
May 25, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 2.9 μg/m3 (13) 48.0
 
May 25, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 3.4 μg/m3 (15) 42.0
 
May 25, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 3.3 μg/m3 (14) 30.0
 
May 25, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 4.7 μg/m3 (20) 24.0
 
May 25, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 5.1 μg/m3 (22) 39.0
 
May 25, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.7 μg/m3 (20) 43.0
 
May 25, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.7 μg/m3 (20) 47.0
 
May 25, 2022, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 8.1 μg/m3 (34) 43.0
 
May 24, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 8.6 μg/m3 (36) 45.0
 
May 24, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 9.6 μg/m3 (40) 43.0
 
May 24, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 10.2 μg/m3 (43) 43.0
 
May 24, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 11.6 μg/m3 (49) 49.0
 
May 24, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 11.3 μg/m3 (48) 48.0
 
May 24, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 12.8 μg/m3 (53) 53.0
 
May 24, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 11.0 μg/m3 (46) 46.0
 
May 24, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 7.2 μg/m3 (31) 31.0
 
May 24, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 4.5 μg/m3 (19) 26.0
 
May 24, 2022, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 5.8 μg/m3 (25) 28.0
 
May 24, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
May 24, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 6.1 μg/m3 (26) 37.0
 
May 24, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 5.4 μg/m3 (23) 34.0
 
May 24, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 3.9 μg/m3 (17) 33.0
 
May 24, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.7 μg/m3 (16) 38.0
 
May 24, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.7 μg/m3 (16) 38.0
 
May 24, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 3.5 μg/m3 (15) 43.0
 
May 24, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 3.5 μg/m3 (15) 43.0
 
May 24, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 4.2 μg/m3 (18) 42.0
 
May 24, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.3 μg/m3 (18) 43.0
 
May 24, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.3 μg/m3 (18) 43.0
 
May 24, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 3.8 μg/m3 (16) 50.0
 
May 24, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 3.8 μg/m3 (16) 50.0
 
May 24, 2022, midnight N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 3.5 μg/m3 (15) 68.0
 
May 24, 2022, midnight N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 3.5 μg/m3 (15) 68.0
 
May 23, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 4.3 μg/m3 (18) 71.0
 
May 23, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 4.3 μg/m3 (18) 71.0
 
May 23, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 5.7 μg/m3 (24) 71.0
 
May 23, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 5.9 μg/m3 (25) 58.0
 
May 23, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 6.1 μg/m3 (26) 48.0
 
May 23, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 7.0 μg/m3 (30) 30.0
 
May 23, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 4.8 μg/m3 (20) 26.0
 
May 23, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 5.1 μg/m3 (22) 22.0
 
May 23, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 5.2 μg/m3 (22) 22.0
 
May 23, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 5.2 μg/m3 (22) 22.0
 
May 23, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 4.7 μg/m3 (20) 20.0
 
May 23, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 5.1 μg/m3 (22) 31.0
 
May 23, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 4.7 μg/m3 (20) 29.0
 
May 23, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 4.7 μg/m3 (20) 31.0
 
May 23, 2022, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 4.8 μg/m3 (20) 34.0
 
May 22, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 4.5 μg/m3 (19) 37.0
 
May 22, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 4.1 μg/m3 (18) 38.0
 
May 22, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 3.7 μg/m3 (16) 39.0
 
May 22, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 3.2 μg/m3 (14) 44.0
 
May 22, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 3.0 μg/m3 (13) 46.0
 
May 22, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 2.9 μg/m3 (13) 47.0
 
May 22, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 3.1 μg/m3 (13) 46.0
 
May 22, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 3.3 μg/m3 (14) 44.0
 
May 22, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 1.8 μg/m3 (8) 41.0
 
May 22, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 1.6 μg/m3 (7) 41.0
 
May 22, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 1.6 μg/m3 (7) 41.0
 
May 22, 2022, noon N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 1.6 μg/m3 (7) 42.0
 
May 22, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 1.8 μg/m3 (8) 44.0
 
May 22, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 2.1 μg/m3 (9) 46.0
 
May 22, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 2.0 μg/m3 (9) 43.0
 
May 22, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 2.2 μg/m3 (10) 39.0
 
May 22, 2022, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
May 22, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
May 22, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 7.1 μg/m3 (30) 38.0
 
May 22, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 7.8 μg/m3 (33) 43.0
 
May 22, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 7.2 μg/m3 (31) 48.0
 
May 22, 2022, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 4.6 μg/m3 (20) 50.0
 
May 21, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 3.6 μg/m3 (16) 50.0
 
May 21, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 3.7 μg/m3 (16) 49.0
 
May 21, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 4.9 μg/m3 (21) 55.0
 
May 21, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 5.7 μg/m3 (24) 58.0
 
May 21, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 5.6 μg/m3 (24) 55.0
 
May 21, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 5.8 μg/m3 (25) 49.0
 
May 21, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 5.9 μg/m3 (25) 43.0
 
May 21, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 4.5 μg/m3 (19) 40.0
 
May 21, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 3.8 μg/m3 (16) 38.0
 
May 21, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.1 μg/m3 (13) 38.0
 
May 21, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.8 μg/m3 (12) 40.0
 
May 21, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.8 μg/m3 (12) 40.0
 
May 21, 2022, noon N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.6 μg/m3 (11) 40.0
 
May 21, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 2.5 μg/m3 (11) 38.0
 
May 21, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 1.9 μg/m3 (8) 37.0
 
May 21, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 2.0 μg/m3 (9) 36.0
 
May 21, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 3.4 μg/m3 (15) 32.0
 
May 21, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 3.5 μg/m3 (15) 32.0
 
May 21, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 3.4 μg/m3 (15) 31.0
 
May 21, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 3.6 μg/m3 (16) 30.0
 
May 21, 2022, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 3.4 μg/m3 (15) 30.0
 
May 20, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 3.0 μg/m3 (13) 34.0
 
May 20, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 3.2 μg/m3 (14) 36.0
 
May 20, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 3.5 μg/m3 (15) 40.0
 
May 20, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 3.0 μg/m3 (13) 28.0
 
May 20, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 2.8 μg/m3 (12) 39.0
 
May 20, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.1 μg/m3 (9) 40.0
 
May 20, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 1.5 μg/m3 (7) 42.0
 
May 20, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 0.9 μg/m3 (4) 38.0
 
May 20, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 0.8 μg/m3 (4) 37.0
 
May 20, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 0.8 μg/m3 (4) 37.0
 
May 20, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 2.4 μg/m3 (10) 38.0
 
May 20, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.8 μg/m3 (16) 38.0
 
May 20, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 3.5 μg/m3 (15) 40.0
 
May 20, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 3.7 μg/m3 (16) 41.0
 
May 20, 2022, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
May 20, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 5.8 μg/m3 (25) 36.0
 
May 20, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 5.9 μg/m3 (25) 37.0
 
May 20, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 8.4 μg/m3 (36) 37.0
 
May 20, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 12.8 μg/m3 (53) 53.0
 
May 20, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 8.0 μg/m3 (34) 45.0
 
May 20, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 3.6 μg/m3 (16) 51.0
 
May 20, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 3.6 μg/m3 (16) 51.0
 
May 20, 2022, midnight N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 3.7 μg/m3 (16) 51.0
 
May 20, 2022, midnight N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 3.7 μg/m3 (16) 51.0
 
May 19, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 4.3 μg/m3 (18) 51.0
 
May 19, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 4.8 μg/m3 (20) 51.0
 
May 19, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 3.6 μg/m3 (16) 50.0
 
May 19, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 5.1 μg/m3 (22) 47.0
 
May 19, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.0 μg/m3 (17) 47.0
 
May 19, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.0 μg/m3 (17) 47.0
 
May 19, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 3.4 μg/m3 (15) 48.0
 
May 19, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 5.2 μg/m3 (22) 35.0
 
May 19, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.9 μg/m3 (21) 38.0
 
May 19, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 5.1 μg/m3 (22) 39.0
 
May 19, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 5.4 μg/m3 (23) 42.0
 
May 19, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 6.6 μg/m3 (28) 43.0
 
May 19, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 5.9 μg/m3 (25) 49.0
 
May 19, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A N/A 6.3 μg/m3 (27) 61.0
 
May 18, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 4.8 μg/m3 (20) 91.0
 
May 18, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A N/A 5.3 μg/m3 (23) 87.0
 
May 18, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 4.9 μg/m3 (21) 94.0
 
May 18, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 66.0 ppb (87) N/A N/A 5.0 μg/m3 (21) 87.0
 
May 18, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A N/A 5.1 μg/m3 (22) 84.0
 
May 18, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 4.8 μg/m3 (20) 51.0
 
May 18, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 5.0 μg/m3 (21) 48.0
 
May 18, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 5.0 μg/m3 (21) 48.0
 
May 18, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.7 μg/m3 (20) 47.0
 
May 18, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.7 μg/m3 (20) 47.0
 
May 18, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 4.8 μg/m3 (20) 40.0
 
May 18, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 4.8 μg/m3 (20) 40.0
 
May 18, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 5.2 μg/m3 (22) 34.0
 
May 18, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 5.2 μg/m3 (22) 34.0
 
May 18, 2022, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 5.2 μg/m3 (22) 33.0
 
May 18, 2022, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 5.2 μg/m3 (22) 33.0
 
May 18, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 5.5 μg/m3 (23) 30.0
 
May 18, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
May 18, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 8.1 μg/m3 (34) 40.0
 
May 18, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 7.7 μg/m3 (33) 48.0
 
May 18, 2022, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 5.5 μg/m3 (23) 50.0